4120A Loop Resistance TesterDetailed product description：

4120A Circuit Resistance Tester

Microprocessor control, high accuracy.
Three indicator lights are used to check the correct wiring status.
4120A has an RCD (ELCB) locking device, which can be used for LOOP or PSC testing,
There is no need to bypass most of the passive RCD's on the distribution board.
Can directly read the expected short-circuit current and ground fault current (PSC).
It has a safety voltage testing function.
All such models have large digital displays.
Measurable low loop resistance (resolution 0.01 Ω).
If the test resistor overheats, the instrument will automatically shut down.
When there is a reverse phase or neutral line fault on the socket, the panel displays.
The shell adopts modern plastic technology, which is beautiful and durable.
Design in accordance with international safety standard IEC61557

Range of circuit resistance	20/200/2000Ω (20/200Ω D-LOK)
Accuracy of circuit resistance	±2%rdg±4dgt
AC test current	20Ω 25A     200Ω 2.3A     2000Ω 15mA
AC testing time	20Ω (20ms)     200Ω (40ms)     2000Ω (280ms)
PSC Scope	200A(2.3A 40ms) 2000A(25A 20ms)D-LOK 20kA(25A 20ms)D-LOK
PSC accuracy	---
voltage	110V~260V±2%rdg±4dgt
Operating voltage	230V+10%，-15%(195V~253V)50Hz
Safety specifications	IEC61010-1CAT.III300V IEC61557-1/3 IEC61010-2-031 Pollution Level 2
IP specifications	IEC60529-IP54
Overall dimensions	185(L)×115(W)×86(D)mm
weight	About 960g
Attachment	7121 (Test Line) User Manual
Optional parts	---

4120A Circuit Resistance Tester