RCD Testing

A tested RCD can help put your mind at ease when it comes to the safety of your workers. RCD testing performed by a qualified professional can ensure that your RCDs have no faults in them and can be relied upon to function when needed.

How Often do you need to test RCD's?

RCD testing has to be completed every six months, and documented, to remain in compliance. There is a test button on the device that has to be pressed to determine if the switch is working correctly. It is working properly if the power goes off.

What is the maximum tripping time for an RCD?

In fact, an RCD when tested at its rated sensitivity must trip in 300 ms. When tested at five times, ie, 150 mA for a 30 mA device, it should trip in 40 ms. A 10 mA device must always trip within 40 ms regardless of the test current.