fixed-mount non-aut. circuit-b. 3-pole, size I, IEC In=1600A to 690V, AC50/60Hz Icu=55kA at 500V frnt.conn. top/bot. single-hole without overcurrent release Motorized/manual operating mechanism with spring charging motor AC 50/60 Hz 208-240 V or 220-250 V DC Activation AC 50/60 Hz 230 V, 220 V DC without 1st auxiliary release With 2nd auxiliary release "R", F3 Undervoltage, instant. 208-240 V AC, 220-250 V DC 4NO+4NC T40= Door sealing frame