The Schneider Electric C12B44V160B is a ComPacT NSXm moulded-case circuit breaker rated 160 A at 40 °C, four-pole, with a B breaking capacity of 25 kA at 415 V AC. It carries the MicroLogic 4.1 electronic trip unit — that means the trip curve is adjustable and thermally stable, with a 20-minute thermal memory before and after tripping so nuisance trips on reclose are less likely. The integrated earth-leakage protection covers Class A and AC sensitivities from 30 mA up to 5 A, which makes it a single-device solution for both overcurrent and ground-fault on distribution feeders.
The connection pitch is 35 mm with spreaders, 27 mm without; terminals accept compression lugs or busbars. IP40 on the front, IK07 impact rating per IEC 62262. The 9 mm pitch spans 12 modules, which is 108 mm wide, 144 mm tall, 80 mm deep — plan your gland-plate fill factor accordingly.