F.m. Non-auto. Air circuit breaker 3-pole, size 2 In=2500A to 500V, 50/60Hz AC Icu=66kA at 500V new design as of 01.11.2008 With manual operating mechanism with memory with electrical and mechanical activation 220...240 V AC, 220...250 V DC With 1st auxiliary release Undervoltage release "R", F3 220...240 V AC, 220...250 V DC instantaneous With 2nd auxiliary release Shunt release "F", F2 220...240 V AC, 220...250 V DC switch position-depending Auxiliary current switch 2 NC+2 NO With door sealing frame A01= Auxiliary switches: 4NO + 4NC 4 NO contacts and 4 NC contacts