Shanghai Huabang Industrial Business Network - surge protector

[surge protector]QYH-1M type surge current suppressor

2026-6-18 12:35:31

QYH-1M Surge Current Suppressor

[surge protector]QSM1-2805P-V(1NH281M-5P) type surge suppression module

2026-6-18 12:35:23

QSM1-2805P-V (1NH281M-5P) Surge Suppression Module

[surge protector]QSM1-2805-VM,QSM1-2805-VL(1NH281M-5) type surge suppression module

2026-6-18 12:35:14

QSM1-2805-VM, QSM1-2805-VL (1NH281M-5) Surge Suppression Module

[surge protector]QSM1-2803P-V(1NH281M-3P) type surge suppression module

2026-6-18 12:35:06

QSM1-2803P-V (1NH281M-3P) Surge Suppression Module

[surge protector]QSM1-2803-V(1NH281M-3) type surge suppression module

2026-6-18 12:34:57

QSM1-2803-V (1NH281M-3) Surge Suppression Module

[surge protector]QSM1-2802P-V(1NH281M-2P) type surge suppression module

2026-6-18 12:34:48

QSM1-2802P-V (1NH281M-2P) Surge Suppression Module

[surge protector]QSM1-2802-V(1NH282M-2) type surge suppression module

2026-6-18 12:34:39

QSM1-2802-V (1NH282M-2) Surge Suppression Module

[surge protector]QSM1-2801P-V(1NH281M-1P) type surge suppression module

2026-6-18 12:34:31

QSM1-2801P-V (1NH281M-1P) Surge Suppression Module

[surge protector]QSM1-2801-V(1NH281M-1) type surge suppression module

2026-6-18 12:34:22

QSM1-2801-V (1NH281M-1) Surge Suppression Module

[surge protector]QYH-2M type surge current suppressor

2026-6-18 12:34:14

QYH-2M Surge Current Suppressor

[surge protector]LXDU8 series surge protector

2026-6-18 12:34:05

Characteristics of LXDU8 series surge protectors
Protect against indirect lightning effects, direct lightning effects, or other transient overvoltage surges
Pluggable type
Display the working status through the mechanical indicator window
Equipped with common mode (MC) and differential mode (MD) protection modes

LXDU8 series surge protector specifications

Product Model	Maximum discharge current Imax kA	Voltage protection level Up kV
LXBU8-��/20-385	twenty	��1.5
LXBU8-��/40-420	forty	��2.0
LXBU8-��/60-420	sixty	��2.5
LXBU8-��/80-420	eighty	��3.0

[surge protector]RCG-3000 High frequency absorber

2026-6-18 12:33:57

The RCG-3000 high-frequency absorber is suitable for use in voltage circuits with AC 380V, 660V, 1140V, and a frequency of 50Hz. The product forms include RC resistance capacitance absorber, Z varistor absorber, and ZRC varistor combined with resistance capacitance absorber.

RCG-3000 High Frequency Absorber Product Model

serial number	model	Component composition	schematic diagram	explanation
one	RC-660 Resistance Capacity Absorber	R·C	Figure 1 (a)	Used for 660V system
two	RC-1140 Resistance Capacity Absorber	R·C	Figure 1 (a)	Used for 1140V system
three	RC-660 Resistance Capacity Absorber	R·C	Figure 1 (b)	Used for 660V system
four	RC-1140 Resistance Capacity Absorber	R·C	Figure 1 (b)	Used for 1140V system
five	ZRC-1140 overvoltage absorber	Z·R·C	Figure 1 (c)	Without neutral point outlet, used for 660V
six	ZRC-1140 overvoltage absorber	Z·R·C	Figure 1 (c)	Without neutral point outlet, used for 1140V
seven	ZRC-660-0 overvoltage absorber	Z·R·C	Figure 1 (d)	Equipped with a neutral point outlet for 660V
eight	ZRC-1140-0 overvoltage absorber	Z·R·C	Figure 1 (d)	Equipped with a neutral point outlet for 1140V
nine	RC-3300 Resistance Capacity Absorber	R·C	Figure 1 (e)	Used for 3300V system
ten	RC-6000 Resistance Capacity Absorber	R·C	Figure 1 (e)	Used for 6000V system

[surge protector]SRMB1 Surge protector

2026-6-18 12:33:48

The SRMB1 surge protector (hereinafter referred to as the "protector") is suitable for use in power supply systems (or communication systems) such as TT, IT, TN-S, TN-C with AC 50/60Hz and rated voltage up to 380V, to protect against indirect lightning and direct lightning effects or other transient overvoltage surges.
The protector complies with GB18802.1 standard.

One Normal working conditions
1. The altitude shall not exceed 2000m;
2. Surrounding air temperature: normal range: -5 �� to+40 ��, limit range: -40 �� to+70 ��;
3. Atmospheric conditions: The relative humidity should be between 30% and 90% at room temperature;
4. The inclination to the vertical plane shall not exceed 5 degrees;
5. Places without significant shaking and impact vibration;
6. In a medium without explosive hazards, and without gases and dust (including conductive dust) that corrode metals or damage insulation.

II Main technical parameters and performance
The main technical parameters of the protector are shown in Table 1 and Table 2, and the model of the zero ground protection module is SRMB1-NPE.

model specification	grid operation voltage Ue V	voltage protection level Up kV	Maximum discharge current Imax kA	Nominal discharge current In kA	leakage current Ic	response time t ns
SRMB1 ��-40	220/380	1.5/2.0	sixty	forty	< 1mA	< 25
SRMB1 ��-20		1.2/1.8	forty	twenty
SRMB1 ��-10			twenty	ten
SRMB1 ��-5			ten	five
SRMB1-NPE		one point two	forty	twenty	< 10��A	< 100

Note: (1) SPD series with Uc=140V, 320V, 385V, 550V have special specifications.
(2) The NPE protection module with Uc=420V is a special specification.

type	Operating voltage of power grid Ue V	Maximum continuous operating voltage Ue V	Voltage protection level Up kV		grounding system
			In=20��10��5kA	In=40kA
1P	two hundred and twenty	420/275	1.8/1.2	2.0/1.5	TN-C��IT
2P					TT��TN-S��IT
3P	three hundred and eighty	four hundred and twenty	one point eight	two	TN-C��IT
4P					TT��TN-S��IT
1P+N	two hundred and twenty	420/275	one point two	one point five	TT��TN-S��IT
3P+N	three hundred and eighty

2. Failure to disconnect device
The module of the protector is equipped with a failure disengagement device. When the protector fails due to overheating or breakdown, the failure disengagement device can automatically disconnect it from the power grid and provide an indication signal. When the protector is normal, the label displays green, and after failure disengagement, the label displays red.
3. Basic parameters
(1) Maximum continuous operating voltage Uc: A.C.140275230385420550V;
(2) Protection level: B, C, D;
(3) Protection level Up: 1.2, 1.5, 1.8, 2.0kV;
(4) Maximum discharge current (8/20 �� S) Imax: 10, 20, 40, 60kA;
(5) Nominal discharge current (8/20 �� S) In: 5, 10, 20, 40kA.

III Main structure and working principle
In a three-phase four wire system, three phase wires and one neutral wire are all connected to the grounding wire with a protector. Under normal circumstances, the protector is in a high resistance state. When the power grid experiences surge overvoltage due to lightning strikes or other reasons, the protector will immediately conduct rapidly in nanoseconds, introducing the surge overvoltage into the ground and protecting the electrical equipment on the power grid. When the surge voltage passes through the protector and disappears, the protector returns to a high resistance state, so as not to affect the normal operation of the power grid.

4 Installation
1. The protector is installed on a standard TH35-7.5 track.
2. The protector is connected by copper wire, with a cross-sectional area of: flexible wire: 2.5-16mm2; Hard wire: 2.5-25mm2. There are two wiring methods:
a) Connect the power switch to the protector, and then connect the protector to the load end. This method is suitable for distribution boxes with load currents below 100A. The cross-sectional area of the wire should be selected according to the load current.
b) From the power switch connection to the protector, and also from the power switch connection to the load end. This method is suitable for distribution boxes with a load current of 100A or more. The cross-sectional area of the wire connected to the protector is not affected by the load current, but the length must not be too long and the total length of the grounding wire must not exceed 500mm2.
3. The grounding wire should use a dual color wire of 4mm2 or more.
To prevent the failure of surge protectors from affecting the normal operation of the power grid, a 32A fuse should be connected in series to the protector connected to the L line;

Five Adjustment, use, and maintenance
1. The protector does not need to be adjusted after installation as required;
2. As long as the protector is installed properly, it can automatically protect the power grid;
3. During operation, it is necessary to regularly check whether the module label is red and observe whether the red indicator light of the fuse is on. Failure components should be replaced in a timely manner.

VI Ordering Instructions
When placing an order, the model and quantity should be indicated. For example: 4 SRMB1 II-40/2P units
2. The following documents are included with the product packaging box during shipment:
a) 1 copy of product qualification certificate (for each product)
b) 1 copy of user manual (for each product)
c) 1 copy of packing list (for each large packaging box)

[surge protector]YBK-B(SPD) series surge protector

2026-6-18 12:33:39

The YBK-B (SPD) series surge voltage protector is suitable for power supply systems such as TT, IT, IT-S, TN-C, TN-C-S, etc. with AC 50/60Hz, 230/400V and below. It can release 100KA lightning current and is usually installed in the low-voltage main distribution cabinet of building incoming lines.

[surge protector]YBK-D(SPD) series surge protector

2026-6-18 12:33:31

The YBK-D (SPD) series surge voltage protector is suitable for power supply systems such as TT, IT, TN-S, TN-C-S with AC 50/60Hz, 230/400V and below. Used to protect low-voltage electrical appliances from surge currents caused by atmospheric discharge (lightning) or switching processes. Corresponding surge protector products can be selected based on single-phase or three-phase power supply systems.

[surge protector]YBK-C(SPD) series surge protector

2026-6-18 12:33:23

YBK-C (SPD) series surge protectors are used for power supply systems such as TT, IT, TN-S, TN-C-S, etc. with AC 50/60Hz, 230/400V and below. Can be used as an equipotential connection during lightning strikes. Used to protect low-voltage electrical appliances from surge currents caused by atmospheric discharge (such as lightning) or switching processes. As a single voltage limiting device, it has a heavy-duty zinc oxide varistor.

[surge protector]RMU1 series surge protector

2026-6-18 12:33:14

The lightning current is large, the residual voltage is low, and the response time is less than 25 nanoseconds.
Built in failure disengagement device, when the surge protector fails due to overheating or breakdown, the failure disengagement device can automatically disconnect it from the power grid without affecting the normal operation of the system.
Visual alarm indicator device, green is normal, red is invalid.
Adopting a plug-in structure, the protection module can be replaced without power outage. And adopt the internationally recognized TH35 standard installation rail.
FS remote signaling device can be selected according to user needs to send fault signals when one or more modules of the surge protector fail, achieving remote monitoring.

Product Specifications

Product model and specifications technical parameters	RMU1-B80	RMU1-C40	RMU1-D20	RMU1-B/ NPE	RMU1-C/NPE RMU1-D/NPE
Maximum continuous operating voltage Uc (V)	four hundred and twenty	four hundred and twenty	four hundred and twenty	two hundred and fifty-five	two hundred and fifty-five
Nominal discharge current In (kA) 8/20 �� s	forty	twenty	ten	sixty	forty
Maximum discharge current Imax (kA) 8/20 �� s	eighty	forty	twenty	eighty	sixty
Voltage protection level Up (kV)	��2.5	��2.0	��1.8	��1.5	��1.2
Response time (ns)	��25	��25	��25	��100	��100
Front level protection: fuse/circuit breaker (A)	63/50	32/25	25/16	63/50	32/25
Insulation resistance (M ��)	��100

RMU1 series surge protector

[surge protector]TIU1 series surge protector

2026-6-18 12:33:06

1. Provide products with different protection levels of B, C, and D
2. Maximum current capacity 65KA (8/20 waveform), high-energy surge protection
3. Maximum sustainable operating voltage for different products: 275V~550V
4. The core components are EPCOS varistors and discharge tubes, which have excellent performance and reliable quality
5. Built in failure thermal desorption device, safer to use
6. Equipped with 3+1 wiring form and ordinary wiring form, suitable for different power grid standards
7. Standard 35mm rail installation
8. Plug in module design for easy maintenance and replacement
9. Equipped with failure indication and normally open/normally closed remote signaling interfaces
10. Equipped with anti reverse insertion mechanism

TIU1 series surge protector

[surge protector]HSU8 series surge protector

2026-6-18 12:32:57

Product Details
The HSU8 series surge protector is suitable for low-voltage distribution systems with AC 50Hz (or 60Hz) and rated operating voltage of 230V/400V. It suppresses transient overvoltage amplitudes lower than the equipment's withstand impulse overvoltage, discharges surge energy, protects system circuits and equipment from lightning surges, and also protects system circuits and equipment from most operational surges (overvoltages). Applicable to banking, securities, meteorology, military, communication, transportation, electricity and other departments.

Product Features

Combination of wiring base and pluggable protection module for easy use and replacement
Equipped with degradation indicator device, intuitive and clear (green represents normal, red represents failure)
high reliability
Can be equipped with remote alarm signal contacts
TH35 standard installation rail installation
The nominal discharge current In is 5kA, 15kA, 25kA, 40kA, 50kA, 60kA
The maximum discharge current Imax is 15kA, 40kA, 60kA, 100kA, 120kA, 150kA
The maximum continuous operating voltage Uc is 275V, 385V, 460V
Monopolar (1P), Bipolar (2P), Tripolar (3P), Quadrupole (4P)

[surge protector]HSM8-63GQ series self resetting overvoltage protector

2026-6-18 12:32:49

Product Details

The HSM8-63GQ series self resetting overvoltage protector is suitable for single-phase lighting circuits, providing overvoltage and undervoltage protection. When single-phase overvoltage occurs in the circuit due to neutral wire breakage, phase to neutral wire misconnection, and severe three-phase load imbalance, the power supply is automatically disconnected to prevent damage to electrical equipment; When the power supply voltage returns to normal, the protector will automatically turn on the power after a delay and restore power supply.

[surge protector]MY2 Surge protector

2026-6-18 12:32:40

Product Overview:
MY2 surge protector (hereinafter referred to as "protector") is suitable for TN-S, TN-C, TN-C-S, TT, IT and other power supply systems with AC 50/60Hz, 380V and below, to protect the power grid from lightning strikes or surge overvoltage.

MY2 surge protector
Failure disengagement device
The module of the protector is equipped with a failure disengagement device. When the protector fails due to overheating or breakdown, the failure disengagement device can automatically disconnect it from the power grid and provide an indication signal. When the protector is normal, the label displays green, and when it fails and disengages, the label displays red.
alarm

The alarm is powered by AC220V, and the indicator light is green when the protector is working normally. The normally open contact is closed, and the normally closed contact is open. Sound and light alarm function: When the protector module fails, the alarm will emit a buzzing sound and turn the green light during normal operation into a red light. If the maintenance personnel press the stop button, the buzzing sound will temporarily stop (but the red light will continue to display). If the fault is still not eliminated after 24 hours, the alarm will beep again.

technical parameters

Indicator/Model		MY2-10/��-140	MY2-10/��-275	MY2-10/��-320	MY2-10/��-385	MY2-10/��-420
Maximum continuous operating voltage UC		140V	275V	320V	385V	420V
Current protection level UP		0.8KV	1.2KV	1.5KV	1.8KV	2.0KV
Nominal discharge current IN (8/20S) Ka		five	five	five	five	five
Maximum discharge current IMAX (8/20S) kA		ten	ten	ten	ten	ten
Response time NS		<25
Test level		Level III
Width MM		eighteen
color		yellow
protection level		IP20
housing material		Enhanced flame retardant PBT
ambient temperature		-4��~+85��
Fuse or circuit breaker (A)		10~16A
Contact specifications	Phase line neutral line	2.5~35mm^two
	ground wire	4.0~35mm^two
	signal line	1.5mm^two

Installation location and application
Installed at the junction of LPZ1 or LPZ2 and LPZ3 zones, with a protection level of III.
The protector is installed on a standard 35mm track;
The protector is connected with copper wires of 2.5-35mm2, and there are two wiring methods:
(1) Connect the power switch to the protector, and then connect the protector to the load end. This method is suitable for distribution boxes with load currents below 100A. The cross-sectional area of the wire should be selected according to the load current (see Figure 1)
(2) From the power switch connection to the protector, and also from the power switch connection to the load end. This method is suitable for distribution boxes with a load current of 100A or more. The cross-sectional area of the wire connected to the protector is not affected by the load current, but the length must not exceed 500mm (see Figure 2).
The grounding wire should use a dual color conductor with a size of 4mm2 or more, and the length should not exceed 500mm.
In order to prevent the failure of surge protectors from affecting the normal operation of the power grid, the protector connected to the L line
A 10-32A fuse should be connected in series.

Adjustment, use, and maintenance
SPD does not need to be adjusted after installation as required;
As long as SPD is installed properly, it can automatically protect the power grid;
Regularly check if the module label turns red during operation and replace faulty components in a timely manner.
The appearance and installation dimensions of the protector
The appearance and installation dimensions of the protector are the same as MY2-10

[surge protector]GSU1 series surge protector

2026-6-18 12:32:32

GSU1 series surge protector

[surge protector]YZG2 series overvoltage suppressor

2026-6-18 12:32:23

YZG2 series overvoltage suppressor

[surge protector]DBM1 series surge overvoltage protector

2026-6-18 12:32:15

The DBM1 series surge overvoltage protector is mainly suitable for limiting transient overvoltages (such as lightning induction and operational overvoltages) in power lines with AC 50Hz and rated operating voltages of 220V and 380V. Used in situations with high overvoltage categories, it can reduce the overvoltage category that the protected electrical equipment and components can withstand by one level; When used in terminals, it can further reduce overvoltage to protect equipment such as televisions, high fidelity speakers, air conditioners, and computers. At the same time, it can also be combined with other modular electrical appliances to form a modular combination electrical appliance that prevents lightning induction.

[surge protector]DSB-C series surge protector

2026-6-18 12:32:06

Product Description
The DSB-C series surge protector is suitable for TT, IT, TN-S, TN-C-S and other power supply systems with AC 50Hz/60Hz, 380V and below. It can be used as an equipotential connection during lightning strikes. Its design is in accordance with IEC-61643-1 and GB18802.1 (2002 edition) standards. The shell is designed to be installed on a 35mm electrical guide rail. The product has a built-in failure release device. When the power protection fails due to overcurrent overheating and breakdown, the failure release device can automatically disconnect it from the power grid. At the same time, the visual alarm indicator module can be replaced when there is working voltage.

Product Features
Replace the protector unit without power outage
Can withstand up to 150KA (8/20 �� S) lightning current surge
Remote signaling contacts and alarms
Action response time less than 25 nanoseconds
The window color indicates the working status of the protector: green (normal), red (fault)

Installation location and application
C-level surge protection level (SPD) protection, used for equipotential overvoltage during lightning strikes, installed at the junction of LPZOB or LPZ1 zone and LPZ2 zone. Usually installed are floor distribution boxes, computer centers, telecommunications rooms, elevator control rooms, cable TV rooms, building control rooms, security monitoring centers, fire centers, industrial control rooms, frequency conversion equipment control rooms, hospital operating rooms, monitoring rooms, and distribution boxes in places where electronic medical equipment is installed. It can also be installed in the main lighting distribution box of residential buildings below six floors, and SPD should be installed in the household distribution box for dispersed small villas.

technical parameters

Product wiring diagram

DSB-C series surge protector

[surge protector]DSB-C/N-PE series surge protector

2026-6-18 12:31:57

Product Description
(BDS-C/2+1-320) (BDS-C/3+1-320) is a surge protector made of N-PE gas discharge gap, used for lightning protection of TT distribution systems in 220/380. It can be used as an equipotential connection during lightning strikes. Its design is in accordance with IEC-61643-1 and GB18802.1 (2002 edition) standards. The protector can be made with a remote signaling contact function. The remote signaling contact is a normally open contact. If one or more modules of the protector fail, the contact will close and send a fault signal. The remote signaling contact is set at AC36V, 1A.

Product Features
New protection mode, phase to neutral (L-N) and neutral to ground (N-PE) protection modes
Complete specifications, with various practical specifications of 220V (2+1) and 380V (3+1)
Remote signaling contact function (optional)
Large flow capacity, built-in high-tech material discharge level

Installation location and application
N-PE in TT distribution system is suitable for C-level N-PE lightning current or voltage protection, and is used for equipotential connection during lightning strikes.

technical parameters

Product wiring diagram

DSB-C/N-PE series surge protector

[surge protector]DSB-B series surge protector

2026-6-18 12:31:49

Product Description
The DSB-B series surge protector is suitable for TT, IT, TN-S, TN-C-S and other power supply systems with AC 50Hz/60Hz, 380V and below. It can be used as an equipotential connection during lightning strikes. Its design is in accordance with IEC-61643-1 and GB18802.1 (2002 edition) standards. The shell is designed to be installed on a 35mm electrical guide rail. The product has a built-in failure release device. When the power protection fails due to overcurrent overheating and breakdown, the failure release device can automatically disconnect it from the power grid. At the same time, the visual alarm indicator module can be replaced when there is working voltage.

Product Features
Replace the protector unit without power outage
Can withstand up to 150KA (8/20 �� S) lightning current surge
Remote remote signaling contacts and alarms �� Action response time less than 25 nanoseconds
The window color indicates the working status of the protector: green (normal), red (fault)
Installation location and application
(B/4) level surge protection (SPD) protection, used for equipotential overvoltage during lightning strikes, installed at the junction of LPZOA or LPZOB zone and LPZ1 zone. Usually installed at the low voltage main distribution cabinet where the conduit enters the line.

(B/2) It is usually installed at the low voltage main distribution cabinet of the overhead incoming line, and is composed of single pole combinations to select and configure various power supply systems.

�� Technical parameters

�� Product wiring diagram

DSB-B series surge protector

[surge protector]DSB-D series surge protector

2026-6-18 12:31:41

The DSB-D series surge protectors (B-class, C-class, D-class power lightning protection boxes) are lightning protection equipment used in low-voltage power grids. Mainly installed at various low-voltage distribution boxes indoors. When the indoor power grid experiences lightning induced overvoltage (conducted wave) or operational overvoltage, the lightning protection box can quickly release energy into the ground, limiting the overvoltage impact on the power grid to a certain peak value to protect electrical equipment from lightning strikes and operational overvoltage impacts. The most basic function of a lightning protection box is to absorb lightning strikes and surge overvoltages. Therefore, the surge protector in the lightning protection box should be selected according to the requirements of different installation locations and limited voltage levels. The surge protector in the lightning protection box has a failure indicator device, with green indicating normal and red indicating failure.

Product Features
Divided by shell structure: wall mounted, embedded:
Divided by power grid type: single-phase, three-phase four wire;
Classified by applicable locations: Type B, Type C, Type D;
B-Household power distribution box, negative terminal of main automatic switch (or fuse).
C - For distribution boxes connected more than 15 meters to the incoming power distribution box, the negative terminal of the main automatic switch (or fuse).
D-Terminal box main automatic switch (or fuse) negative terminal.

Model Description

Technical parameters

Product wiring diagram
1. The lightning protection box should have a good and independent grounding system, and the grounding resistance should be less than 10 ��. And it cannot be replaced by water pipes, gas pipes, sewage pipes, etc.
2. The grounding wire shall not be less than 4mm2, and the distance from the grounding wire to the equipotential body shall be less than 0.5 meters.
When the rated current of the main circuit breaker (fuse) of the front-end distribution box of the lightning protection box is greater than 100A, a lightning protection box with a fuse should be selected.

DSB-D series surge protector

[surge protector]ELXU series surge protectors for power protection

2026-6-18 12:31:32

The ELXU series surge protectors for power protection are suitable for TN-S, TN-C, TN-C-S, TT, TI and other power supply systems with AC 50/60HZ 380V and below. They can be used as equipotential connection and protection electrical equipment during lightning strikes, and are installed at the junction of LPZOB or LPZ I and LPZ II zones.

The ELXU series surge protector for power protection is a voltage limiting type surge protector suitable for indoor use, complying with IEC61643-1 and GB18802.1 standards, with a test classification of Level II and an enclosure protection level of IP20.

[surge protector]TBP-230 series low-voltage combined comprehensive instantaneous overvoltage protector

2026-6-18 12:31:24

The TBP-230 series low-voltage combined instantaneous overvoltage protector is applied to 220/380V power supply and consumption systems, mainly used for busbar side protection and load side protection of important buildings, dangerous area buildings, and important equipment. Adopting special internal structures and wiring methods to achieve functions that ordinary surge protectors cannot achieve.

TBP-230 series low-voltage combined instantaneous overvoltage protector model definition:

Example of Low Voltage TBP Model (TBP-230/5P)

[surge protector]LND series surge protectors for power distribution systems

2026-6-18 12:31:15

LND series surge protector for power distribution system

I. Overview

With the rapid development of information networks, the number and scale of electronic devices within the system are constantly expanding, the integration level of electronic devices is increasing, and the overvoltage resistance of electronic devices is correspondingly decreasing. Once electronic devices are attacked by surge overvoltage (caused by lightning or switch operation), the probability of damage also greatly increases. Modular surge protectors for low-voltage systems are the preferred product for preventing such destructive accidents.

2�� Purpose and execution standards

The LND series surge protector is suitable for AC 220/380V low-voltage TT, IT, TN-S, TN-C-S and other distribution systems. It is used to limit the impact of surge overvoltage on the power supply system and prevent electromagnetic pulses generated by lightning strikes from impacting electrical equipment through the distribution system.

The performance requirements of this product shall be implemented in accordance with the GB18802-2002 "Surge Protective Devices (SPDs) for Low Voltage Distribution Systems" standard. For some parameters not explicitly specified in this standard, reference shall be made to the foreign IEC61643-1, UL1449, and IEEE62.41 standards for correction. In addition, GB50057 "Code for Design of Lightning Protection of Buildings" does not provide detailed regulations on the production parameters of SPDs, and cannot be used as a standard document to guide the specific production of SPDs. It is only used as a reference specification.

3�� Usage conditions

·Altitude: below 2000m;

·Environmental temperature: -40 ��~+80 ��;

·Environmental humidity: not higher than 90%;

·Seismic intensity: 7 degrees or below;

·Environmental medium: Non corrosive and explosive gases and dust.

4�� Model Definition

5�� Typical Technical Parameters Table of Conventional Products

LND-B series surge protector

Rated voltage V	220/380
Continuous operating voltage (single pole) V	385~420
polar number	2~4
8/20 nominal discharge current kA	forty	sixty	eighty	one hundred
8/20 maximum discharge current kA	eighty	one hundred	one hundred and twenty	one hundred and fifty
10/350 impulse discharge current kA	eight	ten	twelve	fifteen
Electricity (As)	two	two point five	three point seven five	five
Voltage protection level (kV)	two	two	two point five	three
Response time (ns)	<25
Recommended wire diameter (mm2)	L��N16�� PE25
Recommended fuse current (A)	63~100
Single piece width (mm)	eighteen	twenty-seven	twenty-seven	twenty-seven
Installation method	35mm electrical guide rail
Model Example	LND-B/4-420-60

LND-C series surge protector

Rated voltage V	one hundred and ten	220/380
Continuous operating voltage (single pole) V	140~270	320~420
polar number	1~2	2~4
8/20 nominal discharge current kA	twenty	fifteen	twenty	thirty
8/20 maximum discharge current kA	forty	thirty	forty	sixty
Voltage protection level (kV)	zero point eight	1.5~2.0	1.5~2.0	1.5~2.0
Response time (ns)	<25
Recommended wire diameter (mm2)	L��N16�� PE25
Recommended fuse current (A)	thirty-two
Single piece width (mm)	eighteen	eighteen	eighteen	eighteen
Installation method	35mm electrical guide rail
Model Example	LND-C/4-420-20

LND-D series surge protector

Rated voltage V	220/380
Continuous operating voltage (single pole) V	three hundred and twenty
polar number	1~2
8/20 nominal discharge current kA	five	ten
8/20 maximum discharge current kA	ten	twenty
Voltage protection level (kV)	one	one
Response time (ns)	<25
Recommended wire diameter (mm2)	L��N6�� PE10
Single piece width (mm)	eighteen	eighteen
Installation method	35mm electrical guide rail
Model Example	LND-D/2-320-5

[surge protector]TBP Low voltage combined comprehensive instantaneous overvoltage protector

2026-6-18 12:31:07

The TBP low-voltage combined instantaneous overvoltage protector (low-voltage TBP) is applied in 220/380V power supply and consumption systems, mainly used for busbar side protection and load side protection of important buildings, dangerous area buildings, and important equipment

The TBP low-voltage combined instantaneous overvoltage protector (low-voltage TBP) adopts a special internal structure and wiring method to achieve functions that ordinary surge protectors cannot achieve

TBP low-voltage combined comprehensive instantaneous overvoltage protector

[surge protector]GRD series surge protector

2026-6-18 12:30:58

GRD1�� The 2-series surge protectors (hereinafter referred to as protectors) are mainly used to protect electrical appliances from indirect lightning and direct lightning effects or other transient overvoltage surges. These appliances are assembled and connected to electrical circuits with AC rated voltage not exceeding 1000V (effective value), 50/60Hz or DC voltage not exceeding 1500V, limiting the amplitude of transient overvoltage, absorbing, consuming or discharging current energy. When used in situations with high overvoltage categories, they can make the protected components switch from one higher overvoltage category to another lower overvoltage category.

Suitable for combining with other modular terminal appliances to form composite appliances, which can improve installation categories, expand usage scope, or further reduce overvoltage when used for terminals, in order to protect household appliances such as televisions and high fidelity speakers, or devices such as computers and microcomputers.

[surge protector]TBP-400 Series Low Voltage Overvoltage Protector TBP-400/200 400/150 400/100 400/80 400/65

2026-6-18 12:30:50

The TBP-400 series low-voltage overvoltage protector is suitable for use in AC 50/60Hz low-voltage power supply systems to protect against direct lightning effects, indirect lightning magnetic pulses, and other transient overvoltages.
The TBP series protectors comply with GB18802.1-2002/IEC61643-1:1998 and GB50057-2000 "Code for Design of Lightning Protection of Buildings"
TBP series protectors have protection forms such as relative phase, ground to ground, relative neutral line, neutral line to ground, and other combinations.
The TBP series protectors are suitable for surge protection requirements in buildings, communication systems, and industrial fields.

Model specifications and main technical parameters

1. Model and its meaning
Current supplied products: TBP-400 series, TBP-400/15,TBP-400/20,TBP-400/25,TBP-400/40,TBP-400/65,TBP��400/80,TBP-400/100,TBP-400/150,TBP-400/200 Low voltage combined instantaneous overvoltage protector of equivalent model
2. Main Technical Parameters Table
1) Main technical parameters of TBP
2) NPE protection modules with Uc=420V can be specially supplied.
Application Table of TBP Series Protectors 2 Application of TBP in Power Systems

Model specifications and main technical parameters

1. Model and its meaning
Current supplied products: TBP-400 series, TBP-400/15,TBP-400/20,TBP-400/25,TBP-400/40,TBP-400/65,TBP��400/80,TBP-400/100,TBP-400/150,TBP-400/200 Low voltage combined instantaneous overvoltage protector of equivalent model

model	TBP-400/200		TBP-400/150		TBP-400/100		TBP-400/65
Rated voltage (V)	230/400	400/690	230/400	400/690	230/400	400/690	230/400	400/690
Frequency (Hz)	fifty		fifty		fifty		fifty
10/350 �� S lightning impulse current (KA)	fifty	fifty	thirty-five	thirty-five	twenty-five	twenty-five	fifteen	fifteen
8/20 �� S maximum discharge current (KA)	two hundred	two hundred	one hundred and fifty	one hundred and fifty	one hundred	one hundred	sixty-five	sixty-five
Residual voltage of lightning impulse current (not greater than) (kV) 10KA (10/350 �� S)	one point three	two point three	one point three five	two point three five	one point four	two point four	one point four five	two point five
Surge discharge current residual voltage (not greater than) (kV) 5KA/10KV (8/20 �� S) combined wave	one	one point eight	one point one	one point nine	one point one five	two	one point two	two
Operating impulse current residual voltage (not greater than) (kV) screen 300A	zero point seven	one point two	zero point seven five	one point three	zero point eight	one point four	zero point eight five	one point five
1.2/50 �� S impulse action voltage (kV)	one point five	two point six	one point six	two point eight	one point seven	three	one point eight	three point one
2ms square wave impulse current (A)	two thousand		one thousand and five hundred		one thousand		six hundred and fifty
Internal backup insurance breaking capability (Arms)	fifty		fifty		fifty		fifty
External backup insurance breaking capability (Arms)	one hundred and twenty		one hundred and twenty		one hundred and twenty		one hundred and twenty
Discharge frequency (3KA/6KV)	10 ^ 5/20 years		10 ^ 5/20 years		10 ^ 5/20 years		10 ^ 5/20 years
response time	��1ns		��1ns		��1ns		��1ns
Starting time	��25ns		��25ns		��25ns		��25ns
Storage temperature (��)	-40~+80		-40~+80		-40~+80		-40~+80
Working temperature (��)	-25~+65		-25~+65		-25~+65		-25~+65
relative humidity	��95%		��95%		��95%		��95%
Altitude (m)	��4000		��4000		��4000		��4000
Test Basis	GB18802.1 IEC61643-1		GB18802.1 IEC61643-1		GB18802.1 IEC61643-1		GB18802.1 IEC61643-1
Selection criteria	GB50057 UL1449 IEEE62.41-1991		GB50057 UL1449 IEEE62.41-1991		GB50057 UL1449 IEEE62.41-1991		GB50057 UL1449 IEEE62.41-1991
Installation width	180mm		180mm		180mm		90mm

TBP-400 series low-voltage overvoltage protector

[surge protector]JKVAD series DC power surge protector

2026-6-18 12:30:41

Application: JKVAD series DC power surge protector is mainly used for lightning protection of low-voltage DC power systems_A~Zone 2.

Installation method: 35mm electrical guide rail.

Model number					VAD-5	VAD-12	VAD-15	VAD-24	VAD-36	VAD-48
	parameter name			test conditions
work make, do, create, compose, write, etc. ginseng number	Rated working voltage		Un		5V-	12V-	15V-	24V-	36V-	48V-
	Rated working current		In		10A
	leakage current		IL	U=0.75Un	��100uA	��1uA
	Working temperature zone		Tr		-25�桫+80��
guarantee protect ginseng number	Impact flow capacity		Isn	8/20 pulse	20kA
	Limit voltage	Line/Line	Ur	8/20��20kA	��9Un	��5Un	��4Un	��3Un	��3Un	��2Un
		Line/Ground			��200V
	Impact protection Voltage	Line/Line	Up	1kV/us	��5Un	��3Un	��3Un	��3Un	��2Un	��2Un
		Line/Ground			��450V
	Nominal start-up voltage		Uc	IL=1mA	��1.2Un
	response time		Ta		��1Ps

JKVAD series DC power surge protector

[surge protector]JKZAUH type channel surge protector

2026-6-18 12:30:32

Application: JKZAUH channel surge protector is mainly used for lightning overvoltage protection in two-wire communication systems, and is suitable for lightning protection areas 0A to 2.

Protection feature: JKZAUH channel surge protector is used in dual line balanced interface, which can strictly limit surge protection between line and ground.

Installation method: 35mm electrical guide rail

Model number					ZAUH-5	ZAUH-12	ZAUH-24	ZAUH-48
	parameter name			test conditions
work make, do, create, compose, write, etc. ginseng number	Rated working voltage		Un		5V	12V	24V	48V
	Rated working current		In		1A
	leakage current		IL	U=0.75Un	��100uA	��1uA
	Passband		FG	Ae��3dB RL��100��	0��150MHz
	insertion loss		Ae	f��fG/3 RL��100��	��0.5dB
	Working temperature zone		Tr		-25�桫+80��
guarantee protect ginseng number	Impact flow capacity		Isn	8/20 pulse	20kA
	Limit voltage	Line/Line	Ur	8/20��20kA	��14Un	��8Un	��4Un	��4Un
		Line/Ground			��7Un	��4Un	��3Un	��2Un
	Impact protection Voltage	Line/Line	Up	1KV/��s	��6Un	��4Un	��4Un	��4Un
		Line/Ground			��3Un	��2Un	��2Un	��2Un
	Nominal start-up voltage		Uc	IL=1mA	��1.2Un
	response time		Ta		��1ns

JKZAUH type channel surge protector

[surge protector]JKZACH type channel surge protector

2026-6-18 12:30:24

Application: JKZACH channel surge protector is mainly used for lightning overvoltage protection in two-wire communication systems, suitable for lightning protection areas 0A to 2.

Protection feature: Used in dual line balanced interfaces, it can strictly limit surge protection between lines and ground.

Installation method: 35mm electrical guide rail.

Model number					ZACH-5	ZACH-12	ZACH-24	ZACH-48
	parameter name			test conditions
work make, do, create, compose, write, etc. ginseng number	Rated working voltage		Un		5V	12V	24V	48V
	Rated working current		In		1A
	leakage current		IL	U=0.75Un	��100uA	��1uA
	Passband		FG	Ae��3dB RL��100��	0��150MHz
	insertion loss		Ae	f��fG/3 RL��100��	��0.5dB
	Working temperature zone		Tr		-25�桫+80��
guarantee protect ginseng number	Impact flow capacity		Isn	8/20 pulse	20kA
	Limit voltage	Line/Line	Ur	8/20��20kA	��7Un	��4Un	��3Un	��2Un
		Line/Ground			��7Un	��4Un	��3Un	��2Un
	Impact protection Voltage	Line/Line	Up	1KV/us	��4Un	��3Un	��2Un	��2Un
		Line/Ground			��3Un	��2Un	��2Un	��2Un
	Nominal start-up voltage		Uc	IL=1mA	��1.2Un
	response time		Ta		��1ns

JKZACH type channel surge protector

[surge protector]JKZABH type channel surge protector

2026-6-18 12:30:15

Application: Mainly used for lightning overvoltage protection in two-wire communication systems, suitable for lightning protection zones 0A to 2.

Protection feature: Used in dual line balanced interfaces, it can strictly limit surge protection between lines.

Installation method: 35mm electrical guide rail.

Model number					ZABH-5	ZABH-12	ZABH-24	ZABH-48
	parameter name			test conditions
work make, do, create, compose, write, etc. ginseng number	Rated working voltage		Un		5V	12V	24V	48V
	Rated working current		In		1A
	leakage current		I_L	U=0.75Un	��100uA	��1uA
	Passband		FG	Ae��3dB R_L��100��	0��150MHz
	insertion loss		Ae	f��fG/3 R_L��100��	��0.5dB
	Working temperature zone		Tr		-25�桫+80��
guarantee protect ginseng number	Impact flow capacity		Isn	8/20 pulse	20kA
	Limit voltage	Line/Line	Ur	8/20��20kA	��7Un	��4Un	��3Un	��2Un
		Line/Ground			��200V
	Impact protection Voltage	Line/Line	Up	1KV/us	��4Un	��3Un	��2Un	��2Un
		Line/Ground			��450V
	Nominal start-up voltage		Uc	I_L=1mA	��1.2Un
	response time		Ta		��1ns

JKZABH type channel surge protector

[surge protector]JKP-B class surge protector

2026-6-18 12:30:05

Application:

JKP-B60 and JKP-B80 surge protectors are suitable for lightning strike or surge overvoltage protection in AC 50-60Hz and 220V/380V power supply systems. They are generally installed in the low-voltage main distribution cabinet or low-voltage main switchgear of building incoming lines, and are used for various power supply level 2 (B) overvoltage protection.

Installation method: 35mm electrical guide rail.

Model number	JKP-B60	JKP-B80
Rated working voltage Un (V~)	220/380	220/380
Continuous operating voltage Uc (V~)	385, 420	385, 420
Protection level Up (V~)	��2.0	��2.0
Nominal discharge current (8/20us) In (kA)	thirty	forty
Maximum flow rate Imax (8/20 �� s) (kA)	sixty	eighty
Response time t (ns)	��25
working environment	-40��+85
relative humidity	95%(25��)
Connecting wire cross-sectional area (mm × mm)	��25	��35
Connecting ground wire cross-sectional area (mm × mm)	��35	��35

JKP-B level surge protector

[surge protector]JKP-C class surge protector

2026-6-18 12:29:55

JKP-C15/2��JKP-C15/4��JKP-C20/2��JKP-C20/4�� Surge protectors are suitable for AC 50Hz and 220V/380V, providing lightning or surge overvoltage protection for power supply systems. They can meet the needs of computer technology networks, airport communications, factories, intelligent buildings, hospitals, fire centers, industrial control rooms, cable TV rooms, building monitoring, etc. The distribution box for each floor, elevator lobby, and small residential building can also be installed in the main distribution box.

Model number	JKP-C15					JKP-C20
Rated working voltage Un (V~)	220V		380V			220V		380V
Continuous operating voltage Uc (V~)	two hundred and seventy-five	three hundred and twenty	three hundred and eighty-five	four hundred and twenty	four hundred and forty	two hundred and seventy-five	three hundred and twenty	three hundred and eighty-five	four hundred and twenty	four hundred and forty
Protection level Up (V~)	��1.0	��1.3	��1.4	��1.4	��1.4	��1.0	��1.3	��1.4	��1.4	��1.4
Nominal discharge current (8/20us) In (kA)	fifteen					twenty
Maximum flow rate Imax (8/20 �� s) (kA)	thirty					forty
Response time t (ns)	��25
working environment	-40��+85
relative humidity	95%(25��)
Connecting wire cross-sectional area (mm × mm)	��16��25
Connecting ground wire cross-sectional area (mm × mm)	��16��25
Alarm line cross-sectional area (mm × mm)	��1.5

JKP-C level surge protector

[surge protector]JKP-D class power surge protector

2026-6-18 12:29:45

JKP-D5/2, JKP-D5/4, JKP-D10/2, JKP-D10/4, 220V/380V single-phase and three-phase surge protectors are suitable for AC 50Hz, 220V/380V power supply systems requiring surge or overvoltage protection, and can meet the end protection requirements of electrical equipment, such as airport, factory computer networks, intelligent equipment, civil buildings, etc.

Installation method: 35mm electrical guide rail

Model number	JKP-D5		JKP-D10
Rated working voltage Un (V~)	two hundred and twenty		three hundred and eighty
Continuous operating voltage Uc (V~)	two hundred and seventy-five	three hundred and twenty	three hundred and twenty	four hundred
Protection level Up (kV~)	��0.7	��1.0	��1.1	��1.2
Nominal discharge current (8/20us) In (kA)	five		ten
Maximum current carrying capacity I max (8/20 �� s) (kA)	ten		twenty
Response time t (ns)	��25
working environment	-40��+85
relative humidity	95%(25��)
Connecting wire cross-sectional area (mm × mm)	��10		��16
Grounding wire cross-sectional area (mm × mm)	��16		��25
Alarm line cross-sectional area (mm × mm)	��1.5

JKP-D level power surge protector

[surge protector]M-SP series surge protection device

2026-6-18 12:29:36

Description of M-SP series surge protection device

This series of products is suitable for lightning and surge protection in the PZOB lightning protection zone and the LPZ1 to LPZ2 (Class C or II) power lines.
The core component of this product adopts the latest high-capacity surge absorber MOV, which has been rigorously screened and has stable quality.
The product has the advantages of high current capacity, low output residual voltage, and fast response to overvoltage (action time less than 25ns), which can effectively protect electrical equipment.
Install a failure release device that can automatically disconnect the protector from the power grid when it fails due to overheating or breakdown.
This series of products has complete functions, modular packaging, and standard 35mm wide electrical installation rails for easy installation and replacement.
The shell is made of reinforced flame-retardant PBT material, which meets electrical safety standards.
Can attach alarm remote signaling

Product installation location and application
The C-level module series is usually installed at the junction of LPZOB or LPZ1 area or LPZ2 area, that is, Class II, and is usually installed in distribution cabinets and boxes.
Combining single poles into various configurations, suitable for TN-S, TN-C, TN-C-S, TT, IT and other power supply systems.
Widely used for second level lightning protection in power supplies. Usually installed at the distribution cabinet; Floor distribution boxes, computer centers, telecommunications rooms, security monitoring centers, cable TV rooms, building control rooms, elevator control rooms, fire control centers, industrial control hospital operating rooms, monitoring rooms, and distribution boxes containing electronic medical equipment; It can also be installed in the main distribution box of residential buildings below six floors and in the distribution box of dispersed villas.
Before the surge protector, a commercially available 63A fuse must be installed as a backup safety device for the protector.
The protector is suitable for indoor installation, and waterproof measures should be added outdoors.
All wiring must ensure firm and reliable electrical connection, and lightning protection grounding should comply with lightning protection specifications (recommended grounding resistance not exceeding 10 ��), and the grounding wire should be short and straight (�� 0.5 meters). The wire diameter specifications are shown in the wire specification table.

Installation location and application of M-SP series surge protection device

model	M-SP-B
Maximum continuous operating voltage Uc	280V,335V,385V,460V ��50Hz/60Hz
Limit voltage Up (8/20 �� S, In)	��2.2KV	��2.5KV
Nominal discharge current In (8/20 �� S,)	30KA	40KA
Maximum discharge current Imax (8/20 �� S)	60KA	80KA
response time	��25ns
Maximum backup fuse strength	63A backup protection device
Installation of wiring method	parallel connection
bracket installation	35mm wide electrical installation guide rail
Conductor cross-section	Multi strand wire (L \ N) �� 10mm2 Multi strand wire (PE) �� 16mm2
Normal or faulty	possess
Indicate the material of the casing	Enhanced flame retardant PBT
Overall dimensions	90 x 27 x 62mm
Installation width	1 standard module
reference standard	IEC61643��GB18802-2002��GB50343-2004
Installation location	Installed in the distribution box, Class B/II

Technical Specifications

model	M-SP-D M-SP-C
Maximum continuous operating voltage Uc	280V,335V,385V,460V��50Hz/60Hz
Limit voltage Up (8/20 �� S, In)	��1.2KV	��1.5KV	��1.8KV
Nominal discharge current In (8/20 �� S,)	5KA	10KA	20KA
Maximum discharge current Imax (8/20 �� S)	10KA	20KA	40KA
response time	��25ns
Maximum backup fuse strength	63A backup protection device
Installation of wiring method	parallel connection
bracket installation	35mm wide electrical installation guide rail
protection level	Ip20
Conductor cross-section	Multi strand wire (L \ N) �� 10mm2 Multi strand wire (PE) �� 16mm2
Normal or faulty	possess
Indicate the material of the casing	Enhanced flame retardant PBT
Overall dimensions	90 x 18 x 62mm
Installation width	1 standard module
reference standard	IEC61643��GB18802-2002��GB50343-2004
Installation location	Installed in the distribution box, C/D level/II level

Main electrical schematic diagram

[surge protector]ZU30 series surge protector

2026-6-18 12:29:27

The ZU30-B surge protector is suitable for TN-S, TN-C, TN-C-S, TT, IT and other power supply systems with AC 50Hz/60Hz, 380V and below. It is used for equipotential connection at SPD-1 in the SPD installation diagram to protect the power grid from lightning strikes or surge overvoltage. Its design complies with IEC61643-1 and GB18802.1 standards. The product is equipped with a built-in failure disengagement device. When the surge protector fails due to overheating or breakdown, the failure disengagement device can automatically disconnect it from the power grid. At the same time, the visual alarm indicator changes from green to red. The product can optionally have a remote communication contact function. The remote communication contact is a normally open contact. If one or more modules of the surge protector fail, the contact will close and send out a fault signal, achieving remote monitoring. The protection module can be replaced when there is voltage present.