Products :: Circuit Protection :: Equipment Leakage Circuit Breakers PD-Series: SmartGuard SmartGuard equipment leakage circuit breaker; Handle actuator; front panel or Din rail mounting; equipment ground fault protection; 1-3 poles; switched or unswitched neutral options; 1-50 amps, up to 480Y/277VAC; 7-100 milliamp equipment leakage trip current; LED leakage trip indicator; UL, CSA