The EFU10 or EFU15 form part of a low cost, high specification, multi-function earth fault protection system comprising control unit, core balance C.T. and optional panel meter. A host of "built-in" features provide real savings in space, cost and installation time whilst providing the optimum earth leakage protection for virtually any application.

Designed for din-rail or chassis mounting, just one compact model can be selected to provide trip, alarm or monitoring outputs for earth fault currents from 10mA to 6.4 Amps (I Amp to 64 Amps on request) irrespective of system voltage or frequency. The operating response time can also be selected through the range 0.005 Secs. To 3.15 Secs, thus providing excellent co-ordination and discrimination characteristics.