Circuit-breaker, 4p, 6300A, withdrawable part

Circuit-breaker IZM63 ( Air circuit-breakers/switch-disconnectors), 4 pole, Current Range: 4000 to 6300 A, Rated current = rated uninterrupted current( In = Iu): 6300 A, Rated ultimate short-circuit breaking capacity up to 440V/690V 42/42( Icu): 100 kA, Rated service short-circuit breaking capacity up to 440V/690V 42/42( Ics): 100 kA, Overload release, min.( Ir): 2520 A, Overload release, max.( Ir): 6300 A, Installation type: Withdrawable, Standard/Approval: IEC, Protective function: Selective operation