The Schneider Electric C12N44V160L is a ComPacT NSXm 160N MCCB — a 4-pole, 160 A moulded-case circuit breaker with an electronic MicroLogic 4.1 trip unit and integrated earth-leakage protection. The electronic trip unit offers adjustable earth-leakage sensitivity from 30 mA to 5 A (class A or AC), so you can tune it to the branch circuit's leakage profile without adding an external relay.
Integrated earth-leakage protection covers both class A (pulsating DC) and class AC (sinusoidal) fault types, with selectable sensitivity from 30 mA up to 5 A. This eliminates the need for a separate RCCB or RCBO downstream, saving a module width in the panel.
Mounts on a backplate; 12-module pitch at 9 mm per module gives a total width of 108 mm. Depth is 80 mm, height 144 mm. Connection is front-facing via Everlink lugs — accepts 2.5 to 95 mm² rigid/stranded copper or aluminium on the line side, 2.5 to 70 mm² fine-stranded copper on the load side. The neutral is fixed left. Pollution degree 3 (IEC 60664-1) confirms it handles conductive pollution typical of industrial enclosures.