fixed-mount non-aut. circuit-b. 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 AC 50/60 Hz 110-127 V AC or 110-125 V DC Activation 50/60 Hz 110 V AC, 110 V DC With 1st auxiliary release Shunt release "F", F1 50/60 Hz 110 V AC/110 V DC, 100% on-load factor With 2nd auxiliary release "R", F3 Undervoltage, instant. 24 V DC 4NO+4NC C22= Ready-to-close signaling S07= Castell/Fortress in Off position with 4 padlocks S55= Mutual mechanical interlocking 2m T40= Door sealing frame