$32.99
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RCD tester for verifying that safety switches actually trip when they should. Pressing the test button on the switchboard only proves the mechanism works - it does not measure trip time or confirm the RCD meets its rated performance.
RCDs are mechanical devices and they do fail, usually without any outward sign. Periodic testing is required in workplaces and is good practice everywhere. A tester like this gives evidence the safety switch will actually operate.
Brand new stock. Fast dispatch from Sydney.