withdrawable circuit breaker, with guide frame, IEC 60947-2, size 1, 4-pole, N pole on right, In=1250 A up to 690 V AC 50/60 Hz, breaking capacity N Icc=55/42 kA at 500/690 V, tripping unit ETU600 LSI upgradeable, color display, Bluetooth, USB interface, basic protection LT, ST, INST, including protection of the N conductor (internal neutral point sensor available), trip alarm switch (1 x CO), connection at rear horizontal guide frame with shutter and position signaling switch (3x CO),