Circuit breaker 3VA2 IEC Frame 1000 Switching capacity class M Icu=55 kA @ 415 V 4-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 N-conductor protection adjustable (OFF, 50%, 100%) Lug terminal