The GFL2B120302 from Altech is DIN rail mount circuit breaker (ground fault protection) GFL series with 1 pole + N, B trip characteristic and 30mA ground fault sensitivity level. This circuit breaker has 12A current rating, 240VAC voltage rating and 50/60Hz rated frequency. Designed to provide protection against short circuits, overloads, AC ground faults (residual current faults) as well as pulsating DC ground faults. Short circuit withstand rating is 10kA.