withdrawable non-automatic air circuit breakers without guide frame 4-pole, frame size 0, IEC n conductor on the left In=1250A to 690V, 50/60Hz AC Icu=55kA at 415V Icu=50kA at 500V Icu=42kA at 690V without electronic trip units with rtc and 4Aux aux switches connections standardized for 3vW81 frames