3RB1257-0KG00-0FM0
SOLID-STATE OVERLOAD RELAY, W. INTEGR. THERMISTOR PROTECT. 125...500 A AC 110...120 V 50/60 HZ GROUND FAULT MONIT. THROUGH CONNECTION OF EXTERNAL SUMMATION CURRENT TRANSF. 1NO/1NC (OVERC./THERMISTOR) 1NO/1NC (GROUND FAULT), MONOST. KLOECKNER-MOELLER, ZWA500 MONOSTABLE KLOECKNER-MOELLER, ZWA500
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