withdraw. non-aut. circuit-b. without guide frame 4-pole, size I, IEC In=1250A to 690V, AC50/60Hz Icu=55kA at 500V rear connection horizontal without overcurrent release Motorized/manual operating mechanism with spring charging motor 24-30 V DC Activation 24 V DC With 1st auxiliary release Shunt release "F", F1 24 V DC; 100% ON period without 2nd auxiliary release 2NO+2NC R57= Mutual mechanical interlock only slide-in circuit breaker 2 m