A 16 Amp GFCI circuit breaker that provides protection to equipment from a short circuit, overload and earth leakage. The UL1053 ground fault breaker opens the circuit with leakage greater than 30 mA and has a convenient LED visual trip indicator. The circuit breaker is rated at 16 amps, 120 Vac with a 4. 5kA interrupt capacity. The NDB1L series of ground fault circuit breakers all feature screw clamp shock proof wire terminations, push to test button and convenient din rail mounting. The NDB1L series of ground fault circuit breakers use the C Curve trip characteristics which are instantaneous trip 5In to 10In.