Further information for Elma RCD test (6398920362)
Easy testing of FI / RCD circuit breakers Digital, handy FI / RCD tester circuit breakers for controlling all common FI / RCD measure the operating time and tripping current measurement of contact voltage display of earth resistance Switchable between selective (S) and normal (N) RCCBs with trigger Current or increasing current Additional electrical torch handy, compact tester