Withdrawable circuit breaker with cradle (Guide Frame), UL1066/IEC60947-2, FS 1, 3-poles, In=1200A up to 508V AC 50/60Hz, breaking capacity N, 50kA at 508V AC, Trip unit ETU300 LSI optimized for standard applica- tions, without display Protection LT, ST, INST, N-protection requires an external N-sensor, incl. trip/bell alarm (1xCO), rear vertical connection, cradle with shutter,