Circuit breaker 3VA2 IEC Frame 1000 Switching capacity class M Icu=55 kA @ 415 V 3-pole, system protection ETU350, LSI, In=800 A Overload protection Ir=320 A...800 A short-circuit protection Isd=1.5...10 x Ir, Ii=12 x In Lug terminal Shunt release (STL) 12-30 V DC, 24 V AC 50/60 Hz 2 auxiliary switches HQ 1 tripped signaling contact HQ 1 protective trip unit signaling switch