Withdrawable circuit breaker with cradle (Guide Frame), UL1066/IEC60947-2, FS 2, 4-poles, N-pole left, In=1600A up to 635V AC 50/60Hz, breaking capacity N, 50/50kA at 508/635V AC, Trip unit ETU300 LSIG optimized for standard applica- tions, without display Protection LT, ST, INST, GF, include N-protection, (internal N-sensor available), incl. trip/bell alarm (1xCO), rear vertical connection, cradle with shutter, position signall. switch,