circuit breaker 3VA2 IEC frame 160 breaking capacity class M Icu=55kA @ 415V 4-pole, line protection ETU330, LIG, In=63A overload protection Ir=25A…63A short-circuit protection Ii=1.5…12 x In N conductor protection adjustable (OFF, 100%) ground-fault protection Ig=0.25…1 x In= tg=0.1/0.3s clamp connection