Shanghai Huabang Industrial Business Network - Knife melting switch

[Knife melting switch]JHG Fuse isolation switch

2026-6-17 21:52:38

JHG fuse isolation switch

[Knife melting switch]JHW Rainproof fuse isolation switch

2026-6-17 21:52:29

JHW rainproof fuse isolation switch

[Knife melting switch]JHT Strip fuse isolation switch

2026-6-17 21:52:21

JHT strip fuse isolation switch

[Knife melting switch]HWTBK-0.5 Low voltage knife melting switch

2026-6-17 21:52:12

HWTBK-0.5 low-voltage knife melting switch

[Knife melting switch]HRW-0.5 knife melting switch

2026-6-17 21:52:03

The HRW-0.5 (HRWK-0.5) outdoor low-voltage knife melting switch is suitable for distribution lines with AC 50Hz and rated working voltage of 0.5KV. As a short-circuit protection and overload protection on the low-voltage side of transformers, it can meet the requirements of no-load transformers, no-load lines, and rated working currents under certain conditions

HRW-0.5 knife melting switch technical parameters

[Knife melting switch]GH1 series isolating switch fuse group

2026-6-17 21:51:55

Scope of application
The GH1 series isolation switch fuse group is mainly used in distribution circuits and motor circuits with high short-circuit currents. It serves as a power switch, isolation switch, and emergency switch for infrequent manual operation and can be used for circuit short-circuit protection.

meet the standard
GB14048.3��EC60947-3

technical parameters

[Knife melting switch]HH15-125 Isolating switch fuse group

2026-6-17 21:51:46

The HH15-125 isolation switch fuse group (hereinafter referred to as the switch) is mainly suitable for distribution circuits and motor circuits with high short-circuit current at AC 50Hz, rated current of 630A and below, and rated working voltage up to 660V, and is used for circuit short-circuit protection. The performance of this product complies with IEC60947-3, GB14048.3, and JB8629 standards.

[Knife melting switch]HR5-200 Fuse type isolating switch

2026-6-17 21:51:36

HR5 series fuse type isolation switch (hereinafter referred to as the switch) is suitable for circuits with AC 50 Hz, rated voltage up to 660 volts, and agreed heating current up to 630 amps. It is mainly used in distribution circuits and motor circuits with high short-circuit current, as a power switch, isolation switch, emergency switch, and circuit protection, but generally not used for directly opening and closing a single motor.

The performance of HR5-200 fuse type isolating switch complies with IEC60947-3, GB14048.3, and JB8976 standards.

[Knife melting switch]GHH1(HR17B)-160 Fuse type isolating switch

2026-6-17 21:51:27

GHH1 (HR17B) -160 fuse type isolating switch

[Knife melting switch]GHH1(HR17B)-250 Fuse type isolating switch

2026-6-17 21:51:18

The GHH1 (HR17B) series fuse type isolating switch (hereinafter referred to as the switch) complies with IE60947-3 and GB14048.3 standards. Its rated insulation voltage is 690V, rated working voltage up to 400V, rated working current up to 630A, and rated frequency is 50Hz. It is suitable for use as a power switch, isolation switch, emergency switch, and circuit protection in distribution circuits and motor circuits with high short-circuit currents. However, it is generally not used for directly opening and closing a single motor.

GHH1 (HR17B) -250 fuse type isolating switch

[Knife melting switch]JDW2-0.5LT Low voltage knife melting switch

2026-6-17 21:51:08

JDW2-0.5LT low-voltage knife melting switch

[Knife melting switch]HHT10 series strip type fuse type isolating switch

2026-6-17 21:51:00

Scope of application
The HHT10 series strip type fused load isolation switch can be operated with load, and the upper and lower input and output lines are easy to switch. The current level is 160A-630A, pioneering the integration of current transformers and strip switches, and can be equipped with fuse monitors. The strip switch can not only disconnect single-phase, but also disconnect three-phase simultaneously. The installation of this switch in a complete set of products can save a lot of space, and it is widely used in imported box type substations.
This product complies with the GB14048-3-2002 IEC947-3 (1999) standard.

Model meaning

Appearance and installation dimensions

	Model	A	B	C	D	E	F
Three phase separate disconnection	HHT10-160	six hundred and fifty	forty-nine	one hundred and fifty	two hundred and thirty	one hundred and eighty-five	one hundred
Three phase simultaneous disconnection	HHT10-160	five hundred and ninety	forty-nine	one hundred and ninety-seven point five	three hundred and twenty-two	one hundred and eighty-five
Three phase separate disconnection	HHT10-250,400,630A	seven hundred and sixty-four	ninety-nine	one hundred and ninety-five	three hundred	one hundred and eighty-five
Three phase simultaneous disconnection	HHT10-250,400,630A	seven hundred and sixty-four	ninety-nine	one hundred and ninety-five	four hundred and fifty-seven	one hundred and eighty-five

HHT10-160/3 three-phase separate disconnection HHT10-160L three-phase simultaneous disconnection

HHT10-250400630A/3L three-phase separate disconnection HHT10-250400630A/3 three-phase simultaneous disconnection

Agreed heating current A		one hundred and sixty	two hundred and fifty	four hundred	six hundred and thirty
Rated insulation voltage V		eight hundred
Rated current A	380V AC20	one hundred and sixty	two hundred and fifty	four hundred	six hundred and thirty
	380V AC21	one hundred and sixty	two hundred and fifty	four hundred	six hundred and thirty
	380V AC22	one hundred and sixty	two hundred and fifty	four hundred	six hundred and thirty
	660V AC20	one hundred and sixty	two hundred and fifty	four hundred	six hundred and thirty
	660V AC21	one hundred	two hundred	three hundred and fifteen	four hundred and twenty-five
	660V AC22	one hundred	one hundred and sixty	three hundred and sixteen	three hundred and fifteen
size		00	one	two	three
fuse	Rated current of the melt at 380V A (Breaking ability)	20. 25, 32, 35, 40, 50 63, 80, 100, 125, 160 (��100kA)	80, 100, 125, 160, 200, 224, 250 (��100kA)	125, 160, 200, 224, 250, 300, 315, 355, 400 (��100kA)	315, 355, 400, 425, 500, 630 (��100kA)
fuse	Rated current of the melt at 660V A (Breaking ability)	20. 25, 32, 35, 40, 50, 63, 80, 100 (��50kA)	80, 100, 125, 160, 200 (��50kA)	123, 160, 200, 224, 250, 300, 315 (��50kA)	315, 355, 400, 425 (��50kA)

HHT10 series strip type fuse type isolating switch

[Knife melting switch]HR7 Fused isolation switch

2026-6-17 21:50:49

HR7 fused isolation switch

[Knife melting switch]HRT2 Bar type fuse type isolating switch

2026-6-17 21:50:40

HRT2 strip fuse type isolating switch

[Knife melting switch]HR8 Fused isolation switch

2026-6-17 21:50:31

HR8 fused isolation switch

[Knife melting switch]SLKR2 series fuse type isolating switch

2026-6-17 21:50:22

Scope of application:

The SLKR2 series fuse type isolating switch has a rated insulation voltage of 880V, a rated working voltage of 690V, a rated working current of 425A, a rated working voltage of 400V, a rated working current of 630A, and a rated frequency of 50Hz. It is mainly used in power distribution and motor circuits with high short-circuit current, as a power switch, isolating switch, emergency switch, and circuit protection, but generally not used for directly opening and closing a single motor.

The product performance indicators comply with the GB14048.3 standard.

Model and meaning:

The matching relationship between switches and fuses

Table 1

Agreed fever Current (Ith)	Rated work Voltage (Ue)	Rated work Current (Ie)	fuse size	Rated current of melt (A)
one hundred and sixty	four hundred	one hundred and sixty	00	4. 6, 10, 16, 20, 25, 32, 35, 40, 50, 63, 80 100, 125, 160
one hundred and sixty	six hundred and ninety	one hundred	00	4. 6, 10, 16, 20, 25, 32, 35, 40, 50, 63, 80, 100
two hundred and fifty	four hundred	two hundred and fifty	one	80, 100, 125, 160, 200, 224, 250
two hundred and fifty	six hundred and ninety	two hundred	one	80, 100, 125, 160, 200
four hundred	four hundred	four hundred	two	125, 160, 200, 224, 250, 300, 315, 335, 400
four hundred	six hundred and ninety	three hundred and fifteen	two	125, 160, 200, 224, 250, 300, 315
six hundred and thirty	four hundred	six hundred and thirty	three	315, 335, 400, 425, 500, 630
six hundred and thirty	six hundred and ninety	four hundred and twenty-five	three	315, 335, 400, 425

Appearance and installation dimensions: (Figure 1, Figure 2, Table 2)

SLK R2-160, 250, 400, 630A Dimensions and Installation Dimensions - Table 2

Model number	A	B	C	F	L	O	P	X
SLK R2-160	one hundred and six	two hundred	eighty-three	one hundred and seventeen	one hundred	two hundred and five	seventeen	thirty-three
SLK R2-250	one hundred and eighty-five	two hundred and forty-five	one hundred and twelve	one hundred and ninety-nine	one hundred and five	two hundred and ninety-four	twenty	fifty-seven
SLK R2-400	two hundred and ten	three hundred and fifty-one	one hundred and twenty-eight	two hundred and twenty-four	one hundred and twenty-four	three hundred and thirty-nine	twenty-five	sixty-five
SLK R2-630	two hundred and fifty-six	three hundred and fifty-one	one hundred and forty-two point five	two hundred and seventy	one hundred and twenty-seven point five	three hundred and sixty	twenty-eight	eighty

SLKR2 series fuse type isolating switch

[Knife melting switch]SLKR1 series isolation switch fuse

2026-6-17 21:50:12

The SLKR1 series isolation switch fuse is mainly used for connecting or disconnecting normal loads and overload currents in distribution circuits with AC rated working voltage up to 380V, rated working current up to 1250A, and rated frequency of 50HZ. It also includes accidental connection and disconnection of a single motor. In the event of a short circuit, the fuse can disconnect the current and has isolation function in the disconnected state.

Model and meaning

SLKR1 series isolation switch fuse

[Knife melting switch]HG2B series strip isolation fuse knife switch

2026-6-17 21:50:04

1. Scope of application

The HG2B series strip isolation fuse knife switch can be operated with load, and the upper and lower input and output lines are easy to switch. The current level is 160A-630A, pioneering the integration of current transformers and strip switches, and can be equipped with fuse monitors. The strip switch can not only disconnect single-phase, but also disconnect three-phase simultaneously. The installation of this switch in a complete set of products can save a lot of space, and it is widely used in imported box type substations.

2 Models and their meanings

HG2B series strip isolation fuse knife switch

[Knife melting switch]MGR series isolating switch fuse group

2026-6-17 21:49:55

Product Overview:
The MGR series isolation switch fuse group (hereinafter referred to as the switch) is a multi pole, manually operated switch made of glass fiber reinforced unsaturated polyester resin with a high dielectric performance, protection capability, and reliable operational safety.

The operating mechanism is a spring-loaded, instantaneous release acceleration mechanism with a multi break contact structure for instantaneous connection and disconnection. Regardless of the speed of the joystick, it greatly improves various electrical and mechanical performance.
The isolation switch fuse group can ensure the connection and disconnection of the circuit with load, and has reliable safety breaking protection against overcurrent or short circuit.
Clearly visible disconnected state.
Has strong resistance to moisture and heat.
The switch has a beautiful, novel, simple, small size, and comprehensive functions.

Application of MGR series isolating switch fuse group products

The MGR series isolation switch fuse group is mainly used for AC 50Hz, rated voltage 660V, DC rated voltage 440V, and rated current up to 630A. It is used for infrequent connection and disconnection of circuits.

meet the standard
International standards:
IEC60947-1 (1998) "Low voltage switchgear and control gear - Part 1: General principles"
National standard IEC60947-3 (1999) "Low voltage switchgear and control equipment, switches, isolators, isolating switches and fuse assemblies":
GB/T14048.1-2002 General Principles for Low Voltage Switchgear and Control Equipment
GBl4048.3-2002 "Low voltage switchgear and control equipment, low voltage switches, isolators, isolating switches and fuse assemblies"
GB/T14942.2-93 "Degrees of Protection Provided by Enclosures for Low Voltage Electrical Appliances"
GB13539.1-92 Basic Requirements for Low Voltage Fuses
GBl3539.2-92 "Supplementary Requirements for Fuses Used by Dedicated Personnel for Low Voltage Fuses"

Product Features
1. The acceleration mechanism with instantaneous release of spring energy storage achieves fast connection or disconnection (13.8 meters/second), independent of the speed of the operating handle,
Greatly improved the ability to extinguish arcs.
2. The shell made of glass fiber reinforced unsaturated polyester resin has good flame retardant properties, dielectric properties, and safe operation
Complete.
3. Parallel multi breakpoint contacts have self-cleaning function.
4. It can ensure the connection or disconnection of circuits with load and has reliable overcurrent and short-circuit safety protection functions.
5. Replacing the melt is safer, more convenient, and faster.

Working and environmental conditions
The MGR isolation switch fuse group can reliably operate under the following conditions:
1. Sea level not exceeding 2000 meters;
2. The ambient temperature shall not exceed 40 ��, not be lower than -5 ��, and the relative humidity shall not exceed 95%;
3. Non explosive hazardous medium environment;
4. No rain or snow invasion environment;
Note: If it is expected to be used under conditions where the ambient air temperature is above+40 �� or below -5 �� to -45 ��, the user should inform the manufacturer.
MGR-160-400A/I type isolating switch fuse group
MGR-I type is a modular design structure.
Ensure load connection and disconnection, reliable overcurrent and short-circuit safety disconnection protection.
Clearly visible disconnected state.
There are 10 specifications including two poles, three poles, four poles (three poles with ten switchable neutral poles), and 63A-400A according to the fuse.

Structure and operational form
Direct operation from the front: The handle is installed on the front of the switch.
Side direct operation: The handle is installed on the right side of the switch (separate instructions are required for the handle to be on the left side).
Front operation outside the cabinet: The handle is installed on the front of the distribution cabinet door.
Operation on the outer side of the cabinet: The handle is installed on the right side of the distribution cabinet (separate instructions are required for the handle to be on the left side).
Can be equipped with S-shaped auxiliary contacts.

[Knife melting switch]HJDW3-0.5 type low-voltage knife melting switch

2026-6-17 21:49:47

The HJDW3-0.5 low-voltage knife melting switch is suitable for outdoor 500V 50Hz distribution lines. As a protection and overload protection for the low-voltage side of transformers, it can meet the requirements of no-load transformers, no-load lines, and rated working currents under certain conditions

Usage environment

The altitude shall not exceed 2000 meters
The ambient temperature shall not exceed+40 �� and shall not be lower than -25 ��
Relative humidity not exceeding 85% (relative to+25 ± 5 ��)
No risk of combustion and explosion A place without severe vibration and impact, and without chemical substances that severely corrode metals and insulation materials

structural characteristics

The HJDW3-0.5 low-voltage knife melting switch is mainly composed of a contact blade, a contact head, a pillar porcelain bottle, a base, and other components, with 3 pieces per set. The product has a small volume, light weight, and is easy to install at high altitudes. The contact blade and contact head are locked by a spring, and the contact is good and reliable. It will not automatically open under normal vibration.

[Knife melting switch]HJDW6-0.5 type low-voltage knife melting switch

2026-6-17 21:49:37

Overview
The HJDW6-0.5 low-voltage knife melting switch is suitable for outdoor 500V 50Hz distribution lines. As a protection and overload protection for the low-voltage side of transformers, it can meet the requirements of no-load transformers, no-load lines, and rated working currents under certain conditions

Usage environment

The altitude shall not exceed 2000 meters
The ambient temperature shall not exceed+40 �� and shall not be lower than -25 ��
Relative humidity not exceeding 85% (relative to+25 ± 5 ��)
No risk of combustion and explosion A place without severe vibration and impact, and without chemical substances that severely corrode metals and insulation materials

Structural characteristics of HJDW6-0.5 low-voltage knife melting switch
The product is mainly composed of contact blades, contact heads, pillar porcelain bottles, bases, and other components, with 3 pieces per set. The product has a small volume, light weight, and is easy to install at high altitudes,
The contact between the blade and the contact adopts a spring locking method, which ensures good and reliable contact and will not automatically open under normal vibration If repairing or replacing the fuse, simply use a hook rod to pull open the opening part and remove the contact blade. After replacing the fuse on the ground, use a hook rod to hang and close the contact blade

[Knife melting switch]HR20 type low-voltage knife melting switch

2026-6-17 21:49:28

HR20 low voltage knife fuse switch (low voltage fuse switch) is a combination of knife switch and fuse Suitable for use in outdoor low-voltage circuits Used for connecting and disconnecting power supply under normal feeding conditions, and for circuit protection in case of short circuit or overload Transformers can be used for outdoor transmission lines in rural power grids, agricultural and forestry fields, urban power grid renovation, railway petrochemicals, indoor and outdoor areas, and factories of all sizes

structural characteristics

The HR20 low-voltage fuse switch adopts a three pole common base assembly, with clamp type moving and stationary contacts fixed on the base by pillar insulation for each pole. The moving contact part is rigidly connected to the two insulated conductive parts by a ceramic knife, and the user selects a suitable fuse link to connect between these two conductive parts, serving as a switch and fuse An arc extinguishing contact is installed between the moving and stationary contacts. The design is such that when the main contact needs to make contact, the arc extinguishing contact comes into contact first to prevent the arc from burning out the main contact There is a circular release device above the moving contact, which can be operated remotely on the ground using insulated hooks It has a simple structure and reliable performance Advantages such as ease of use

Appearance and installation dimensions

HR20-0.5 (Type 2)

HR20 type low-voltage knife melting switch

[Knife melting switch]WTBK-0.5 type low-voltage knife melting switch

2026-6-17 21:49:17

Overview

The WTBK-0.5 low-voltage knife melting switch is suitable for outdoor 500V 50Hz distribution lines. As a protection and overload protection for the low-voltage side of transformers, it can meet the requirements of no-load transformers, no-load lines, and rated working currents under certain conditions

Usage environment
The altitude shall not exceed 2000 meters
The ambient temperature shall not exceed+40 �� and shall not be lower than -25 ��
Relative humidity not exceeding 85% (relative to+25 ± 5 ��)
No risk of combustion and explosion A place without severe vibration and impact, and without chemical substances that severely corrode metals and insulation materials

structural characteristics
The product is mainly composed of a contact blade, a contact head, a pillar porcelain bottle, a base, and other components, with 3 pieces per set. The product has a small volume, light weight, and is easy to install at high altitudes. The contact blade and contact head are locked by a spring, which ensures good and reliable contact and will not automatically open under normal vibration If repairing or replacing the fuse, simply use a hook rod to pull open the opening part and remove the contact blade. After replacing the fuse on the ground, use a hook rod to hang and close the contact blade

WTBK-0.5 low-voltage knife melting switch

[Knife melting switch]DRO-160 type fuse type isolating switch

2026-6-17 21:49:08

The purpose and characteristics of DRO-160 fuse type isolating switch:

DRO-160 fuse type isolating switch (hereinafter referred to as the switch) has a rated insulation voltage of AC 50Hz, 690V, a rated working voltage of 660V, and a rated current of 160A. It is mainly used as a power switch, isolating switch, and emergency switch in circuits with high short-circuit current and motor circuits.
The rated limit of the switch is the expected short-circuit current (effective value) of 380V~500V/100KA, 660V/50KA.
The switch complies with national standards GB/T14048.1 and GB14048.3, as well as International Electrotechnical Commission standards IEC947 and IEC947-3.
The switch consists of a base and a cover (melting device), with a three-phase semi enclosed structure. It can be operated from the front, and the rated data of the installed fuse link and the action status of the indicator can be directly observed through the transparent plate on the cover. The switch can be equipped with NH000 or NH00 fuse links. Switches have the advantages of small size, safe and reliable use, easy installation and removal of fuse links, and low tactile and operational force.

Technical parameters of DRO-160 fuse type isolating switch

serial number	Rated working voltage (V)	Rated working current/usage category		Install fuse link size and rated current		Rated breaking capacity of fuse link (KA)	Weight (g)
				NH000	NH00
one thousand five hundred and one	three hundred and eighty	160A/AC-22	160A/AC-23	100A	160A	one hundred and twenty	one thousand three hundred and fifty
	five hundred	160A/AC-22	80A/AC-23			one hundred and twenty	one thousand three hundred and fifty
	six hundred and sixty	160A/AC-21	36A/AC-23			fifty	one thousand three hundred and fifty

The working current of switches under different operating voltages and usage categories

DRO-160 type fuse type isolating switch rated on and off capacity

Rated voltage (V)	Rated working current (A)	Usage category	Rated connection and disconnection capacity
			Connect			Cut off
			I/Ie	U/Ue	COS��	Ic/Ie	Ur/Ue	COS��
three hundred and eighty	one hundred and sixty	AC-21	one point five	one point zero five	zero point nine five	one point five	one point zero five	zero point nine five
	one hundred and sixty	AC-22	three		zero point six five	three		zero point six five
	one hundred	AC-23	ten		zero point four five	eight		zero point four five
five hundred	one hundred and sixty	AC-21	one point five	one point zero five	zero point nine five	one point five	one point zero five	zero point nine five
	one hundred	AC-22	three		zero point six five	three		zero point six five
	fifty	AC-23	eight		zero point four five	six		zero point four five
six hundred and sixty	one hundred	AC-21	one point five	one point zero five	zero point nine five	one point five	one point zero five	zero point nine five
	eighty	AC-22	three		zero point six five	three		zero point six five
	thirty-six	AC-23	eight		zero point four five	six		zero point four five

Note:
I - Connection current U - Pre connection voltage Ie - Rated operating current
Ue - rated working voltage Ic - breaking current Ur - recovery voltage

[Knife melting switch]GWR2-0.5 outdoor low-voltage knife melting switch

2026-6-17 21:48:59

One purpose

GWR2-0.5 outdoor low-voltage knife melting switch is suitable for distribution lines with AC 50Hz and rated working voltage of 0.5KV. It serves as short-circuit protection and overload protection for the low-voltage side of transformers, and can meet the requirements of no-load transformers, no-load lines, and rated working currents under certain conditions

Two technical parameters

model Type	Rated voltage voltage (Kv)	Rated current rate current (A)	4S thermal stability current 4S Heat steady e.c.	Dynamic stability current Shock voltage (A)	Impact withstand voltage lmpulse withstand voltage		power frequency withstand voltage Power-frequency withstand voltage
					relatively To earth	Across the isolating distance (KV) between fracture surfaces	relatively To earth	Across the isolating distance (KV) between fracture surfaces
GWR2	zero point five	two hundred	one thousand two hundred and fifty	three thousand one hundred and fifty	four	five	two	three
GWR2	zero point five	four hundred
GWR2	zero point five	six hundred
GWR2	zero point five	eight hundred
GWR2	zero point five	one thousand

GWR2-0.5 outdoor low-voltage knife melting switch

[Knife melting switch]GWR1-0.5 outdoor low-voltage knife melting switch

2026-6-17 21:48:50

One purpose
GWR1-0.5 outdoor low-voltage knife melting switch is suitable for distribution lines with AC 50Hz and rated working voltage of 0.5KV. It serves as short-circuit protection and overload protection for the low-voltage side of transformers, and can meet the requirements of no-load transformers, no-load lines, and rated working currents under certain conditions

Two technical parameters

model Type	Rated voltage voltage (Kv)	Rated current rate current (A)	4S thermal stability current 4S Heat steady e.c.	Dynamic stability current Shock voltage (A)	Impact withstand voltage lmpulse withstand voltage		power frequency withstand voltage Power-frequency withstand voltage
					relatively To earth	Across the isolating distance (KV) between fracture surfaces	relatively To earth	Across the isolating distance (KV) between fracture surfaces
GWR1	zero point five	four hundred	one thousand two hundred and fifty	three thousand one hundred and fifty	four	five	two	three
GWR1	zero point five	five hundred
GWR1	zero point five	six hundred
GWR1	zero point five	eight hundred
GWR1	zero point five	one thousand

GWR1-0.5 outdoor low-voltage knife melting switch

[Knife melting switch]JDW5-0.5 outdoor low-voltage knife melting switch

2026-6-17 21:48:41

One purpose

JDW5-0.5 outdoor low-voltage knife melting switch is suitable for distribution lines with AC 50Hz and rated working voltage of 0.5KV. It serves as short-circuit protection and overload protection for the low-voltage side of transformers, and can meet the requirements of no-load transformers, no-load lines, and rated working current under certain conditions

Two technical parameters

model Type	Rated voltage voltage (Kv)	Rated current rate current (A)	4S thermal stability current 4S Heat steady e.c.	Dynamic stability current Shock voltage (A)	Impact withstand voltage lmpulse withstand voltage		power frequency withstand voltage Power-frequency withstand voltage
					relatively To earth	Across the isolating distance (KV) between fracture surfaces	relatively To earth	Across the isolating distance (KV) between fracture surfaces
JDW5	zero point five	four hundred	one thousand two hundred and fifty	three thousand one hundred and fifty	four	five	two	three
JDW5	zero point five	five hundred
JDW5	zero point five	six hundred
JDW5	zero point five	eight hundred
JDW5	zero point five	one thousand

JDW5-0.5 outdoor low-voltage knife melting switch

[Knife melting switch]JDW1-0.5 outdoor low-voltage knife melting switch

2026-6-17 21:48:30

One purpose
The JDW1-0.5 outdoor low-voltage knife melting switch is suitable for use in distribution lines with an AC frequency of 50Hz and a rated working voltage of 0.5KV. It serves as a short-circuit protection and overload protection for the low-voltage side of transformers, and can meet the requirements of no-load transformers, no-load lines, and rated working currents under certain conditions

Two technical parameters

model Type	Rated voltage voltage (Kv)	Rated current rate current (A)	4S thermal stability current 4S Heat steady e.c.	Dynamic stability current Shock voltage (A)	Impact withstand voltage lmpulse withstand voltage		power frequency withstand voltage Power-frequency withstand voltage
					relatively To earth	Across the isolating distance (KV) between fracture surfaces	relatively To earth	Across the isolating distance (KV) between fracture surfaces
JDW1	zero point five	two hundred	one thousand two hundred and fifty	three thousand one hundred and fifty	four	five	two	three
JDW1	zero point five	four hundred
JDW1	zero point five	six hundred
JDW1	zero point five	eight hundred
JDW1	zero point five	one thousand

JDW1-0.5 outdoor low-voltage knife melting switch

[Knife melting switch]JDW3-0.5 outdoor low-voltage knife melting switch

2026-6-17 21:48:21

One purpose
JDW3-0.5 outdoor low-voltage knife melting switch is suitable for distribution lines with AC 50Hz and rated working voltage of 0.5KV. It serves as short-circuit protection and overload protection for the low-voltage side of transformers, and can meet the requirements of no-load transformers, no-load lines, and rated working current under certain conditions

Two technical parameters

model Type	Rated voltage voltage (Kv)	Rated current rate current (A)	4S thermal stability current 4S Heat steady e.c.	Dynamic stability current Shock voltage (A)	Impact withstand voltage lmpulse withstand voltage		power frequency withstand voltage Power-frequency withstand voltage
					relatively To earth	Across the isolating distance (KV) between fracture surfaces	relatively To earth	Across the isolating distance (KV) between fracture surfaces
JDW3	zero point five	two hundred	one thousand two hundred and fifty	three thousand one hundred and fifty	four	five	two	three
JDW3	zero point five	four hundred
JDW3	zero point five	six hundred
JDW3	zero point five	eight hundred
JDW3	zero point five	one thousand

JDW3-0.5 outdoor low-voltage knife melting switch

[Knife melting switch]WTRG-0.5 series outdoor fuse type isolating switch

2026-6-17 21:48:13

Overview

The WTRG-0.5 series outdoor fuse type isolating switch has been identified by Xi'an High Voltage Apparatus Research Institute as meeting the standards; Widely used for low-voltage side outgoing lines and branch feeders of transformers in urban and rural power grids, it is a product of the replacement of drop out fuses. Isolation switches can prevent low-voltage power supply, reduce the area of power outages, ensure the safety of maintenance personnel, improve power supply reliability, and avoid high-altitude operations, which is of great significance.

WTRG-0.5 series models
WTRG-0.5/250��WTRG-0.5/400��WTRG-0.5/600��WTRG-0.5/800��WTRG-0.5/1000

Model meaning

Normal operating conditions and structural characteristics of WTRG-0.5 series outdoor fuse type isolating switch

The altitude does not exceed 3000mm, the ambient temperature is+40 ��, the lower limit is -25 ��, the relative humidity does not exceed 90% (temperature 20 ��), there is no conductive dust or corrosive gas that can damage metal or insulation, there is no explosion hazard, and there is no severe vibration or impact.
The movable contact is adjustable and does not require a pole to replace the safety; Double pressure structure design for moving contacts, with high contact pressure; The copper transition at the lead connection point does not generate heat; The iron parts are made of hot-dip galvanizing process, which is durable and long-lasting; The structure is simple and the fuse switch is easy to install.

Technical parameters

WTRG-0.5 series outdoor fuse type isolating switch

Ordering Instructions

Please specify the specifications, model, and quantity when placing an order;
If there are special requirements, please consult with our company;
The fuse is provided by the user, please contact our company for special circumstances.

[Knife melting switch]HGLR series isolating switch fuse group

2026-6-17 21:48:04

Application and characteristics of HGLR series isolating switch fuse group

HGLR-I type is a modular design structure.
Ensure load connection and disconnection, reliable overcurrent and short-circuit safety disconnection protection. Clearly visible disconnected state. There are two poles
Three poles, four poles (three poles+switchable neutral pole). Divided into 11 specifications of 63 400A according to the fuse.

Structure and operational form
Direct front operation: The handle is installed on the front of the switch
Direct side operation: The handle is installed on the right side of the switch (separate instructions are required for the handle to be on the left side).
Front operation outside the cabinet: The handle is installed on the front of the distribution cabinet door.
Operation on the outer side of the cabinet: The handle is installed on the right side outside the distribution cabinet (separate instructions on the left side are required).

Technical parameters of HGLR series isolation switch fuse group

specification

Fuse size

External dimensions and installation dimensions

HGLR-160��400

160/3

0��00

one hundred and fifty-nine

one hundred and twenty

20~30

one hundred and twenty-seven

twenty-eight

one hundred and three

twenty-one

one hundred and forty-five

one hundred and seventy-one

one hundred and twenty-seven

five

sixty-seven

thirty-six

twenty

two point five

eight point five

nineteen

160/4

0��00

one hundred and ninety-five

one hundred and twenty

20~30

one hundred and twenty-seven

twenty-eight

one hundred and thirty-nine

twenty-one

one hundred and forty-five

one hundred and seventy-one

one hundred and twenty-seven

five

sixty-seven

thirty-six

twenty

two point five

eight point five

nineteen

150/3

one

two hundred and thirty-six

one hundred and sixty

20~30

one hundred and forty-six

thirty-one

one hundred and seventy-seven

seventeen point five

one hundred and seventy-nine

two hundred and forty-five

one hundred and sixty-two

five point five

ninety-three

sixty

thirty-two

two point five

eleven

nineteen

250/4

one

two hundred and ninety-six

one hundred and sixty

20~30

one hundred and forty-six

thirty-one

two hundred and thirty-eight

seventeen point five

one hundred and seventy-nine

two hundred and forty-five

one hundred and sixty-two

five point five

ninety-three

sixty

thirty-two

two point five

eleven

nineteen

400/3

two

two hundred and eighty-one point five

one hundred and seventy-two point five

20~30

one hundred and forty-nine

thirty-one

one hundred and ninety-eight

sixteen

two hundred and two

two hundred and fifty-five

one hundred and seventy-two

seven

one hundred and twenty-two

sixty-six

fifty

three

eleven

twenty-five

400/4

two

three hundred and forty-seven point five

one hundred and seventy-two point five

20~30

one hundred and forty-nine

thirty-one

two hundred and sixty-four

sixteen

two hundred and two

two hundred and fifty-five

one hundred and seventy-two

seven

one hundred and twenty-two

sixty-six

fifty

three

eleven

twenty-five

HGLR series isolation switch fuse group

[Knife melting switch]HR11(HH11) series fuse switch

2026-6-17 21:47:55

HR11 (HH11) series fuse switch

[Knife melting switch]HR3BX Rotary fuse type knife switch

2026-6-17 21:47:47

HR3BX rotary fuse type knife switch

[Knife melting switch]HR17,HR17B series fuse type isolating switch

2026-6-17 21:47:38

HR17 and HR17B series fuse type isolating switches

[Knife melting switch]GLRB(QSGR1) series isolating switch fuse group

2026-6-17 21:47:29

GLRB (QSGR1) series isolation switch fuse group

[Knife melting switch]HG2,HG2B(NH) series strip type fuse type load isolation switch

2026-6-17 21:47:19

HG2, HG2B (NH) series strip type fuse load isolation switch

[Knife melting switch]GLR(GGLR) series isolating switch fuse group

2026-6-17 21:47:11

GLR (GGLR) series isolating switch fuse group

[Knife melting switch]NHR17 series fuse type isolating switch

2026-6-17 21:47:01

Application scope of NHR17 series fuse type isolating switch

The NHR17 series fuse type isolating switch is a product with advanced international standards in the mid-1990s. Its rated insulation voltage is 800V, rated working voltage is up to 690V, rated working current is up to 630A, rated frequency is 50Hz, and it is used for high short circuit protection. However, it is generally not used for directly opening and closing a single motor. The performance indicators of this product comply with IEC947-3 and GB14048.3 standards.

Normal working conditions:
The ambient air temperature should not exceed+40 ��, and the average temperature within 24 hours should not exceed+35 ��. The lower limit of the ambient air temperature is
-5 ��.
The altitude of the installation location for the two switches shall not exceed 2000m.
The relative temperature of the air at the installation site should not exceed 50% when the highest humidity is+40 ��. Higher relative humidity is allowed at lower temperatures, and the average lowest temperature in the wettest month should not exceed+25 ��
The maximum relative humidity shall not exceed 90%.
The pollution level of the environment where the 4 switches are installed is level 3.
The installation category of switch 5 is Class III.
The switch is installed in a place without vibration and impact.

characteristic
The installation base and housing of the NHR17 series fuse type isolating switch are made of plastic and designed with an anti electric shock cover. Therefore, this series of switches has the advantages of compact structure, light weight, reliable operation, safety, easy installation, and beautiful appearance.
Micro switches are installed on the two switches to provide power conversion for the indication of switch closure and disconnection.

Model and meaning:

Main technical parameters

Distribution fuse size

one

two

three

Power supply, frequency

AC��50Hz

Rated voltage (V)

six hundred and ninety

five hundred

four hundred

six hundred and ninety

five hundred

four hundred

six hundred and ninety

five hundred

four hundred

six hundred and ninety

five hundred

four hundred

Rated insulation voltage (V)

eight hundred

Power frequency withstand voltage (V)

three thousand

Rated working current (A)

one hundred and sixty

two hundred and fifty

four hundred

six hundred and thirty

Agreed heating current (A)

one hundred and sixty

two hundred and fifty

four hundred

six hundred and thirty

Usage category

AC-21B(690V)

AC-22B(500V)

AC-23B(400V)

Rated connection capacity

725V��240A

725V��375A

725V��69OA

725V��945A

525V��480A

525V��750A

525V��1200A

525V��1890A

420V��1600A

420V��2500A

420V��4000A

420V��6300A

Rated breaking capacity

725V��240A

725V��375A

725V��69OA

725V��945A

525V��480A

525V��750A

525V��1200A

525V��1890A

420V��1280

420V��2000A

420V��3200A

420V��5040A

Rated short-circuit current (KA)

fifty

one hundred

fifty

one hundred

fifty

one hundred

fifty

one hundred

Loss power of fuse (W)

twelve

twenty-three

thirty-four

forty-eight

The matching relationship between switches and fuses

The agreed heating current (A)	Fuse size	Acceptable melt current value (A)
one hundred and sixty	00	4. 6, 10, 16, 20, 25, 32, 35, 40, 50, 63, 80, 10, 125, 160
two hundred and fifty	one	80, 100, 125, 160, 200, 224, 250
four hundred	two	125, 160, 200, 224, 250, 300, 315, 355, 400
six hundred and thirty	three	315, 355, 400, 425, 500, 630

Note: When a switch is used in an electric motor circuit, the rated current of the fuse is allowed to be greater than the agreed heating current of the switch.

NHR17 series fuse type isolating switch

[Knife melting switch]HRW2-500 series outdoor fuse type isolating switch

2026-6-17 21:46:52

HRW2-500The series of outdoor fuse type isolating switches are widely used in the distribution lines of rural power grid transformers with 500V and 50Hz.

Environmental conditions for use:
Altitude not exceeding 1000m
The ambient temperature shall not be higher than+40 �� and not lower than -40 ��;
The relative temperature shall not exceed 85% (equivalent to+20 ± 5 ��).

HRW2-500 series outdoor fuse type isolation switch appearance and installation dimensions:

HRW2-500 series outdoor fused isolation switch

[Knife melting switch]HR03 Fuse isolation switch

2026-6-17 21:46:43

HR03 fuse isolation switch

[Knife melting switch]HR02 Fuse isolation switch

2026-6-17 21:46:35

HR02 fuse isolation switch

[Knife melting switch]HR01 Fuse isolation switch

2026-6-17 21:46:25

HR01 fuse isolation switch

[Knife melting switch]HR000 Fuse isolation switch

2026-6-17 21:46:16

1�� Installation dimensions of HR000 fuse isolation switch

HR000

2�� Technical parameters Rated voltage: 690V Breaking capacity: 200KA Functional level: aR/gR gG/gL aM/gM gtr

serial number No.	model Type	Similar product models Competitor Part Number	rated voltage Rated Voltage(V)	current level Class Rating(A)	Dimension (mm)
one	HR000	3NP��LTL	six hundred and ninety	one hundred and sixty	See figure

HR000 fuse isolation switch

[Knife melting switch]RT18-125L Fuse isolation switch RT18-125L��RT18-125LX

2026-6-17 21:46:08

RT18-125L fuse isolation switch complies with GB13539, IEC60269, VDE0636 standards! Suitable for overload and short circuit protection in distribution lines with AC 50Hz, rated voltage AC 690V, and rated current up to 125A. L is with lock function, X is with light function, KN is with switch function.

1�� Installation dimensions of RT18-125L fuse isolation switch

2�� Technical parameters Rated voltage: 690V Breaking capacity: 200KA Functional level: aR/gR gG/gL aM/gM gtr

serial number No.	model Type	Similar product models Competitor Part Number	rated voltage Rated Voltage(V)	current level Class Rating(A)	Dimension (mm)
one	RT18-125L	3NW7	six hundred and ninety	one hundred and twenty-five	See figure
two	RT18-125LX	3NW7	six hundred and ninety	one hundred and twenty-five	See figure

RT18-125L fuse isolation switch

[Knife melting switch]RT18-63L Fuse isolation switch RT18-63L��RT18-63LX

2026-6-17 21:45:59

RT18-63L fuse isolation switch complies with GB13539, IEC60269, VDE0636 standards! Suitable for overload and short circuit protection in distribution lines with AC 50Hz, rated voltage AC 690V, and rated current up to 63A. L is with lock function, X is with light function, KN is with switch function.

2�� Technical parameters Rated voltage: 690V Breaking capacity: 200KA Functional level: aR/gR gG/gL aM/gM gtr

serial number No.	model Type	Similar product models Competitor Part Number	rated voltage Rated Voltage(V)	current level Class Rating(A)	Dimension (mm)
one	RT18-63L	3NW7	six hundred and ninety	sixty-three	See figure
two	RT18-63LX	3NW7	six hundred and ninety	sixty-three	See figure

RT18-63L fuse isolation switch

[Knife melting switch]RT18-32 Fuse isolation switch RT18-16��RT18-32

2026-6-17 21:45:50

RT18-32 fuse isolation switch complies with GB13539, IEC60269, VDE0636 standards! Suitable for overload and short circuit protection in distribution lines with AC 50Hz, rated voltage AC 690V, and rated current up to 32A. X has a luminous function.

1�� Installation size

2�� Technical parameters Rated voltage: 690V Breaking capacity: 200KA Functional level: aR/gR gG/gL aM/gM gtr

serial number No.	model Type	Similar product models Competitor Part Number	rated voltage Rated Voltage(V)	current level Class Rating(A)	Dimension (mm)
one	RT18-16		six hundred and ninety	sixteen	Figure 1
two	RT18-16X		six hundred and ninety	sixteen	Figure 1
three	RT18-32		six hundred and ninety	thirty-two	Figure 2
four	RT18-32X		six hundred and ninety	thirty-two	Figure 2

RT18-32 fuse isolation switch

[Knife melting switch]HH15(QSA) series isolating switch fuse group

2026-6-17 21:45:41

Application of HH15 (QSA) series isolating switch fuse group
It is mainly used in distribution circuits and motor circuits with high short-circuit currents as a manual, infrequently operated main switch or main switch, especially suitable for installation in higher-level drawer type low-voltage complete sets of equipment. The double throw switch is used for infrequent connection and disconnection of dual electrical circuits.

Structural features:
The switch adopts a fully enclosed structure to ensure improved operational reliability and stable performance; Featuring a unique rolling insertion contact system. Each phase has two sets of contact systems with double break points, which can be connected in series or parallel to meet the requirements of circuits with different current sizes and different working categories. The contact system allows current to pass through several rollers, resulting in a significant reduction in the electric reaction force experienced by each roller. During the movement, the contact between the roller and the stationary contact has both rolling and sliding friction, which can effectively avoid welding. The operating mechanism has an energy storage spring, so the movement speed of the moving contact group is independent of the magnitude of the operating force and the operating speed. The actuator consists of a handle mounted on the panel, a drive coupling that engages with the handle, an extension shaft, a shaft coupling, and a drive shaft. Extension and shaft and shaft and shaft coupling joints are only used when the drive shaft is not long enough. The depth of installation of switches in a set of cabinets can be considered according to the needs of the installation of various electrical components in a complete set, with a considerable range of activities.

The technical data of HH15 (QSA) series isolating switch fuse group complies with IEC947-3 and GB14048.3

specification	sixty-three	one hundred and twenty-five	one hundred and sixty	two hundred and fifty	four hundred	six hundred and thirty
Main pole number	three
Rated insulation voltage (V)	When Ue=380, Uj=660; When Ue=660, Uj=1000
Rated working voltage (V)	AC 380 660
Agreed closed heating current (A)	sixty-three	one hundred and twenty-five	one hundred and sixty	two hundred and fifty	four hundred	six hundred and thirty
Rated working current (Ie) 380V��AC��23B 660V��AC��23B	sixty-three sixty-three	one hundred and twenty-five one hundred	one hundred and sixty one hundred and sixty	two hundred and fifty two hundred and fifty	four hundred three hundred and fifteen	six hundred and thirty four hundred and twenty-five
Rated limit short-circuit current 380VY/H	50/100
Rated limit short-circuit current 660V	fifty
Mechanical lifespan (times)	one thousand and seven hundred	one thousand and four hundred	one thousand and four hundred	one thousand and four hundred	eight hundred	eight hundred
Electrical lifespan (times)	three hundred	two hundred	two hundred	two hundred	two hundred	two hundred
When the rated current of the fuse (A) is 380V/660V	63/63	125/100	160/160	250/250	400/315	630/425
Knife shaped contact melting tube model	00			1-2		three
Operating torque (Nm)	seven point five		sixteen			thirty
Auxiliary contact agreed heating current Ith 380V, AC-11 (A)	five

HH15 (QSA) series isolating switch fuse assembly appearance and installation dimensions:

model

L_one

L_two

L_three

HH15-63

twelve

six

one hundred

two

thirty-nine point five

seventy-two

thirty-eight point five

nine

199-250

250-301

301-385

180-199

HH15-125

fifteen

seven point five

one hundred and sixteen

three

thirty-eight point five

seventy

forty point five

ten

199-250

250-301

301-385

180-199

model

L_one

L_two

HH15-160

twenty

ten

one hundred and forty-six

four

forty-four

one hundred and seven

sixty-five

forty-six

226-284

284-342

342-400

one hundred and eighty-nine

one hundred and twenty

HH15-250

twenty-five

twelve point five

one hundred and sixty

M10

four

forty

one hundred and seven

sixty-five

forty-three point five

226-284

284-342

342-400

two hundred and nine

one hundred and sixty

HH15-400

twenty-five

twelve point five

one hundred and sixty

M10

six

thirty-eight

one hundred and seven

sixty-five

forty-three point five

226-284

284-342

342-400

two hundred and nine

one hundred and sixty

model

L_one

L_two

L_three

HH15-630

forty

twenty

two hundred and seventy

M12

six

thirty-three

eighty-seven

sixty

260-295

295-330

330-400

400-500

HH15 (QSA) series isolating switch fuse group

[Knife melting switch]GRW1-500 Outdoor low-voltage fused isolation switch

2026-6-17 21:45:33

summary:
GRW1-500 series outdoor low-voltage fused isolation switch (hereinafter referred to as isolation switch). Widely used in low-voltage side outgoing lines and branch feeders of rural power grid transformers, it is an upgraded product of drop out fuses. Under certain conditions, small load overhead lines and transformers can be disconnected and closed. Isolation switches can prevent low-voltage power supply, reduce the area of power outages, ensure the safety of inspection personnel, improve power supply reliability, and avoid high-altitude operations, which is of great significance.

GRW1-500/200�� 400, 630, 800 outdoor low-voltage fuse type isolation switch fuse specifications

Current regulation for melting plate (A)	one hundred and twenty	one hundred and fifty	two hundred and twenty	three hundred	three hundred and sixty	four hundred and seventy	six hundred
Melt specification	zero point one five	zero point two zero	zero point three zero	zero point five zero	zero point six	zero point eight	one
Transformer capacity (kVA)	eighty	one hundred	one hundred and fifty	180~200	two hundred and fifty	315~320	four hundred

Appearance and installation dimensions

GRW1-500 Outdoor Low Voltage Fused Isolation Switch

[Knife melting switch]WTRK2,HRWK series outdoor low-voltage fused isolation switch

2026-6-17 21:45:24

Environmental conditions for the use of WTRK2 and HRWK series outdoor low-voltage fuse type isolating switches:

+Places where the ambient temperature is not higher than+60 �� or not lower than -40 ��;
+Gas areas without conductivity or chemical reactions;
+A place without a large accumulation of dust;
+A place without fire or explosion hazards;
+A place where the knife switch will not produce severe vibration or impact.

Model number	rated current	rated voltage	Weight
2 HRWK-500	200A	500V
2 HRWK-500	400A
2 HRWK-500	600A

(WTRK2/HRWK) -500 Outdoor Low Voltage Fused Isolation Switch

[Knife melting switch]STK1-63 switch fuse group

2026-6-17 21:45:15

The STK1-63 switch fuse group is suitable for use in distribution circuits with AC 50Hz, rated operating voltage of 380V and below, to connect and disconnect normal loads and overload currents. In the event of a short circuit, the current can be broken by the fuse link.

The performance indicators of the STK1-63 switch fuse group comply with the switch fuse group specified in IEC947-3 and GB14048.3.

[Knife melting switch]HR6 series fuse type isolating switch

2026-6-17 21:45:06

Scope of application
HR6 series fuse type isolating switch (hereinafter referred to as the switch). It is mainly used in distribution circuits and motor circuits with high short-circuit current and rated voltage of AC 660V (45-62Hz), with agreed heating and electric heating up to 630A. It is used as a power switch, isolation switch, emergency switch, and circuit protection, but generally not used for directly opening and closing a single motor. The performance of this product complies with IEC947-3 and GB14048.3 standards.

Model and meaning

Structural features:
The switch consists of a base, cover, and arc extinguishing chamber, all made of arc resistant plastic and featuring a fully plastic structure. The static contact is directly mounted on the base, and the arc extinguishing chamber is easy to disassemble and assemble. Each arc extinguishing chamber has two parts: an inner chamber and an outer chamber. Multiple metal arc extinguishing grids are used to enhance the arc extinguishing ability and improve the contact life.
The NT type fuse link is installed inside the cover, and the cover can rotate in a fan shape along the support, with a large electrical isolation distance to meet the requirements of the isolation switch. The cover can be easily removed from the base, making installation and replacement of the fuse link very convenient. There are three sets of mounting holes on the base to meet the requirements for installation inside various switch cabinets and on panels. On the side of the switch, auxiliary contacts can be installed as needed to send signals indicating the on/off status of the switch.

Main technical parameters
Basic parameters of fuse link

model	Rated voltage (V)	Rated current (A)
NT00	three hundred and eighty	4. 6, 10, 16, 20, 25, 32, 35, 40, 50, 63, 80, 100, 125, 160
NT00	six hundred and sixty	4. 6, 10, 16, 20, 25, 32, 35, 40, 50, 63, 80, 100
NT1	three hundred and eighty	80, 100, 125, 160, 200, 224, 250
NT1	six hundred and sixty	80, 100, 125, 160, 200
NT2	three hundred and eighty	125, 160, 200, 224, 250, 300, 315, 355, 400
NT2	six hundred and sixty	125, 160, 200, 224, 250, 300, 315
NT3	three hundred and eighty	315, 355, 400, 425, 500, 630
NT3	six hundred and sixty	315, 355, 400, 425

Technical parameters of HR6 series fuse type isolating switch

model		HR6-160	HR6-250	HR6-400	HR6-630
Rated insulation voltage (V)		six hundred and sixty	six hundred and sixty	six hundred and sixty	six hundred and sixty
Agreed heating current (V)		one hundred and sixty	two hundred and fifty	four hundred	six hundred and thirty
Rated working current (A)	380V	one hundred and sixty	two hundred and fifty	four hundred	six hundred and thirty
	660V	one hundred	two hundred	three hundred and fifteen	four hundred and twenty-five
	380V. COS ��=0.35 AC23B connected	one thousand two hundred and eighty	two thousand	three thousand and two hundred	five thousand and forty
Rated connection and disconnection capacity (A) (at 1.05Ue)	segmentation	nine hundred and sixty	one thousand and five hundred	two thousand and four hundred	three thousand seven hundred and eighty
	660V. COS ��=0.65 AC22B connected	four hundred and eighty	seven hundred and fifty	one thousand and two hundred	one thousand eight hundred and ninety
	segmentation	four hundred and eighty	seven hundred and fifty	one thousand and two hundred	one thousand eight hundred and ninety
Rated short-circuit current KA		fifty	fifty	fifty	fifty
Maximum expected peak current KA		one hundred	one hundred	one hundred	one hundred
Equipped with NT fuse model		00	one	two	three
pollution level		three	three	three	three
Installation category		��	��	��	��

HR6 series fuse type isolating switch appearance and installation dimensions:

HR6 series fuse type isolating switch

[Knife melting switch]HR5 series fuse type isolating switch

2026-6-17 21:44:56

Scope of application
HR5 series fuse type isolating switch (hereinafter referred to as the switch). It is mainly used in distribution circuits and motor circuits with high short-circuit current, rated voltage AC 600V (45-62Hz), and agreed to heat up to 630A. It is used as a power switch, isolation switch, emergency switch, and circuit protection, but generally not for directly opening and closing a single motor. The performance of this product complies with IEC947-3 and GB14048.3 standards.

Model and meaning

Main technical parameters
Rated insulation voltage: 660V
Rated working voltage: 380V and 660V
3 Rated working current:
380V: 100A, 200A, 400A, 630A four types;
660V: 100A, 200A, 315A, 400A four types;
The on/off capability and rated short-circuit current of switch 4 (see Table 1)
The mechanical lifespan of the 5 switches is 6000 times (100A, 200A) and 1000 times (400A, 630A) respectively
The electrical life of the 6 switches is 600 times (100A, 200A) and 200 times (400A, 630A) respectively. The connection and disconnection conditions are as shown in Table 2
The rated working voltage of the auxiliary switch (Lx19K) is AC 380V, the rated heating current is 5A, and the rated control capacity is 300VA.

Table 1

Rated work
Voltage UeV

Agreed fever
Current IeA

Usage category

Rated connection and disconnection capacity

Rated short-circuit current for melting

connect

segmentation

operation

current

COS��

I/Ie

U/Ue

COS��

I/Ie

U/Ue

COS��

cyclic number

Effective value KA

three hundred and eighty

one hundred

AC-23B

ten

one point zero five

zero point four five

eight

one point zero five

zero point four five

five

one hundred

zero point two

two hundred

AC-23B

ten

one point zero five

zero point three five

eight

one point zero five

zero point three five

three

one hundred

zero point two

four hundred

AC-23B

ten

one point zero five

zero point three five

eight

one point zero five

zero point three five

three

one hundred

zero point two

six hundred and thirty

AC-23B

ten

one point zero five

zero point three five

eight

one point zero five

zero point three five

three

one hundred

zero point two

six hundred and sixty

one hundred

AC-22B

three

one point zero five

zero point six five

three

one point zero five

zero point six five

five

fifty

zero point two five

two hundred

AC-22B

three

one point zero five

zero point six five

three

one point zero five

zero point six five

five

fifty

zero point two five

three hundred and fifteen

AC-22B

three

one point zero five

zero point six five

three

one point zero five

zero point six five

five

fifty

zero point two five

four hundred and twenty-five

AC-22B

three

one point zero five

zero point six five

three

one point zero five

zero point six five

five

fifty

zero point two five

Table 2

Rated working voltage V	Usage category	Connect I/Ie	Connect U/Ue	Connect COS ��	Separate Ic/Ie	Break U/Ue	Cut off COS ��
three hundred and eighty	AC-23B	one	one	zero point six five	one	one	zero point six five
six hundred and sixty	AC-22B	one	one	zero point eight	one	one	zero point eight

The matching relationship between switches and fuses
Table 3

The switch specifies the heating current A	Forehead number	Melt current value A
one hundred	00	4. 6, 10, 16, 20, 25, 32, 35
one hundred	00	40, 50, 63, 80, 100, 125, 160
two hundred	one	80, 100, 125, 160, 200, 224, 250
four hundred	two	125, 160, 200, 224, 250, 300, 315, 355, 400
six hundred and thirty	three	4. 6, 10, 16, 425, 500, 630

Note: When the switch is used in engine electrical appliances, the rated current of the melt is allowed to be greater than the heating current specified by the switch.

Appearance and installation dimensions

[Knife melting switch]HR3 series fuse type knife switch

2026-6-17 21:44:48

Scope of application

The HR3 series fuse type knife switch is divided into two types according to its current: AC (50Hz) and DC; According to the rated current level, it is divided into four levels: 100, 200, 400, and 600. According to its operating mode, it is divided into four types: front side lever transmission mechanism, front central lever transmission mechanism, side operating handle, and non panel front side lever transmission mechanism; According to its maintenance direction, it can be divided into two types: front screen maintenance and rear screen maintenance.

This series of knife switches complies with the GB14048.3 standard.
Model and its meaning

Main technical parameters of HR3 series fuse type knife switch

structural characteristics
The fuse type knife switch is a combination of RTO filler fuses and knife switches, which has the basic performance of RTO filler fuses and knife switches. In the case of normal power supply in the circuit, the knife switch is responsible for turning on and off the power supply. When the circuit or electrical equipment is overloaded or short circuited, the melt developed by the fuse type knife burns out, promptly cutting off the fault current. The fuse type knife switch for pre operation and pre maintenance has a central door for maintenance and replacement of fuses, mainly for installation on BDL distribution panels. The fuse type knife switch for pre operation and post maintenance mainly provides installation on the BSL distribution panel. The fuse type knife switch for maintenance before side operation can be made into a closed power distribution box.

Current fuse type knife switches with rated current of 600 amperes or less are equipped with safety barriers and arc extinguishing chambers. The arc extinguishing chamber is made by riveting phenolic cloth board and steel plate stamping parts.
The fuse of the fuse type knife switch is fixed on an insulated crossbeam with a spring and a lock plate. During normal operation, the fuse is ensured not to trip. When the fuse is blown due to a circuit fault, simply press the lock plate to easily replace the fuse.

HR3 series fuse type knife switch appearance and installation dimensions (see Tables 3-6, Figures 1-4)
(mm) Table 3

(mm) Table 4

Figure 1

Figure 2
(mm) Table 5

(mm) Table 6

Figure 4

Model	Dimensions (mm)				Installation size (mm)
Model	A	B	C*	G	a	b	��c	M
HR3-100/31	four hundred	four hundred	two hundred and seventy-five	two hundred and sixty-six	three hundred and sixty	three hundred and sixty	twelve	ten
HR3-200/31	four hundred	four hundred	two hundred and seventy-five	two hundred and sixty-six	three hundred and sixty	three hundred and sixty	twelve	ten
HR3-400/31	four hundred	four hundred	two hundred and seventy-five	two hundred and sixty-six	three hundred and sixty	three hundred and sixty	twelve	ten
HR3-600/31	four hundred and fifty	four hundred	three hundred and twenty-five	two hundred and sixty-six	four hundred and ten	three hundred and sixty	twelve	ten
HR3-1000/31	five hundred	four hundred	three hundred and fifty	two hundred and sixty-six	four hundred and fifty	three hundred and sixty	twelve	ten

[Knife melting switch]SGR2 series fuse type isolating switch

2026-6-17 21:44:39

Product Name: SGR2 Series Fused Isolating Switch
Compliant with standard: GB 14048.3-2002 "Low voltage switchgear and control equipment - Switchgear, isolators, isolating switches and fuse assemblies".
ICE60947-3:1999 (2nd edition) "Low voltage switchgear and control equipment - Switches, isolators, isolating switches, and fuse assemblies", with equivalent use of its amendment 1:2001.

Product price: negotiable

Scope of application:
The SGR2 series fuse type isolating switch (hereinafter referred to as the switch) has a rated insulation voltage of AC 800V, rated operating voltages of 400V, 690V, rated frequency of 50Hz, and rated operating current of 160V~630A. It is mainly used in distribution circuits and motor circuits with high short-circuit currents, as a power switch and isolation switch, and for circuit protection, but not for directly opening and closing a single motor. When a switch uses an isolation knife instead of a fuse, the switch does not have circuit overload and short circuit protection functions, only meets the rated connection and disconnection capabilities specified by the switch, and is used for line isolation.

[Knife melting switch]SGR1 series isolating switch fuse group

2026-6-17 21:44:31

Product Name: SGR1 Series Isolation Switch Fuse Group
Compliant with standard: GB/T 14048.1-2000 "General Principles for Low Voltage Switchgear and Control Equipment";
GB 14048.3-2002 "Low voltage switchgear and control equipment - Switchgear, isolators, isolating switches and fuse assemblies".
Product price: negotiable
Scope of application:
The SGR1 series isolation switch fuse group is suitable for distribution of electrical energy in distribution or motor networks with AC 50Hz, rated insulation voltage of 800V, rated current of 100A~630A, and rated working voltage of 400V and below. It is used for short circuit protection and isolation of circuits, lines, and equipment that are not frequently connected or disconnected under normal conditions.

Product Model:

SGR1 series isolation switch fuse group

[Knife melting switch]HH15 series isolating switch fuse group

2026-6-17 21:44:22

The HH15 series isolation switch fuse group is mainly used in distribution circuits with AC 50Hz, rated working voltage of 660V, and current up to 630A. It is used to connect and disconnect normal loads and overload currents, as well as accidentally connect and disconnect a single motor. In the event of a short circuit, the fuse can disconnect the current, and in the disconnected state, it has isolation function.

characteristic
Fully enclosed structure
Maintenance free within the lifespan
standard
Compliant with GB14048.3-93 IEC947.9-90
Normal working conditions
Complies with GB/T14048.1 and IEC947.1

Technical data and performance of HH15 series isolation switch fuse group

frame size

one

two

three

Model

HH15-

sixty-three

63/06

one hundred and twenty-five

125/06

one hundred and sixty

100/06

two hundred and fifty

250/06

four hundred

315/06

six hundred

425/06

Agreed heating current
��lth��A

sixty-three

one hundred and twenty-five

one hundred and sixty

two hundred and fifty

four hundred

six hundred

Rated insulation voltage
��Ui��

six hundred

one thousand

six hundred

one thousand

six hundred

one thousand

six hundred

one thousand

six hundred

one thousand

six hundred

one thousand

Rated working voltage
��Ue�� V

three hundred and eighty

six hundred and sixty

three hundred and eighty

six hundred and sixty

three hundred and eighty

six hundred and sixty

three hundred and eighty

six hundred and sixty

three hundred and eighty

six hundred and sixty

three hundred and eighty

six hundred and sixty

Rated working current
��le�� A

sixty-three

one hundred and sixty

one hundred

one hundred and sixty

one hundred

two hundred and fifty

four hundred

three hundred and fifteen

six hundred and thirty

four hundred and twenty-five

Rated connection capacity AC-23b

10Ie

Rated breaking capacity AC-23b

8Ie

Rated limit short-circuit current KA

fifty

Specification of matching fuse

NT00-63

NT00-125

NT00-100

NT00-160

NT00-100

NT2-250

NT2-400

NT2-315

NT3-630

NT3-425

Electric life cycle times

three hundred

two hundred

three hundred

two hundred

three hundred

two hundred

Mechanical lifespan times

two thousand

one thousand and six hundred

two thousand

one thousand and six hundred

two thousand

one thousand and six hundred

one thousand

one hundred thousand and thirty

Maximum manual operating force distance Nm

seven point five

sixteen

thirty

Auxiliary contact electromechanical life cycle times

two thousand

Rated control capacity of auxiliary contact VA

three hundred and sixty

model

HH15-63

157max

112max

135±0.5

90±0.27

seventy-two

thirty-eight point five

nine

twelve

six

six point two

sixteen

199-250

250-301

301-385

HH15-125

120max

seventy

forty point five

ten

fifteen

seven point five

HH15-160

242max

160max

100±0.7

130±0.8

one hundred and seven

sixty-five

forty-six

twenty

ten

seven

twenty-four

226-284

284-342

342-400

HH15-250

163max

forty-three point five

twenty-five

twelve point five

HH15-400

HH15-630

347max

272max

315±1.05

208±0.905

eighty-seven

eighty-one

forty

twenty

nine

twenty-five

260-295

295-330

330-400

model

HH15-63

180-199

forty-seven point five

159max

ninety-five

one hundred and seventeen

twenty-three

sixty-five

sixty

twenty-seven point five

5.5±1

eight

HH15-125

twenty-two

HH15-160

sixteen

182max

one hundred and twenty

one hundred and fifty-two point five

twenty-two

eighty-seven point five

one hundred and forty-two

thirty-eight

7±1

ten

HH15-250

200max

one hundred and sixty

twenty

M10

HH15-400

eighteen

M10

HH15-630

400-500

twenty point five

242max

two hundred and five

one hundred and seventy-one

twenty-two

M12

two hundred

twelve

HH15 series isolation switch fuse group