Fixed 3-pole switch, size II, IEC In=1600A at 690V, AC50/60Hz Icu=66kA at 500V frnt. top/bottom conn. dual-hole Overcurrent trip ETU 25 Adjustable LSI protection 0.4-1 in With manual operating mechanism with memory with mechanical request without 1st auxiliary trip With 2nd auxiliary trip "R", F3 Undervoltage, instantaneous. 24 V DC 2NO+2NC