The Martindale CP301 is an industrial socket tester for instantly checking sockets on 110V centre tapped circuits. It is fitted with a yellow 110V 32A CT plug to BS 4343/IEC309 and provides similar fail-safe LED indication as the classic check plug.
Using LEDs to highlight possible fault combinations, the CP301 is invaluable for instantly checking sockets on industrial or site installations. There is a look up chart on the tester for fast and simple fault diagnosis.
Operating Voltage
- 110V AC (55-0-55V centre tapped supply)
Operating Current
- 30mA
Overvoltage
- CAT II, 150V
Weight
- 180g approx






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