withdrawable circuit breakers with guide frame and PSS 4-pole, frame size 0, IEC N conductor on the left In=630A to 690V, 50/60Hz AC Icu=42kA at 415V Icu=42kA at 500V ETU320 electronic trip units li rotary coding switch with tripped signaling switch, RTC and 4Aux auxiliary switches protection adjustable l: Ir 0.4-1 In i: ii 1-15 In w. var. n conductor protection circ. conductor conn. pc for cual cables, rear maine