3WL1012-2.A21-....Brand: SiemensMPN: 3WL1012-2.A21-....fixed-mounted non-automatic air circuit breakers 4-pole, frame size 0, IEC N conductor on the right In=1250A to 690V, 50/60Hz ac Icu=55kA at 415V Icu=50kA at 50Request a quote