The Schneider Electric C12B34V160B is a ComPacT NSXm moulded-case circuit breaker (MCCB) — 3-pole, 160 A frame rated at 40 °C, with a B performance level giving 25 kA interrupting capacity at 415 V AC. That B rating means it's sized for distribution duty (Category A utilisation) where the fault current is known and coordinated downstream, not for high-stress motor-start or generator protection. The MicroLogic 4.1 electronic trip unit handles the curve; it's the same trip platform used across the NSXm family, so settings and accessories are consistent if you're standardising on this line.
That's the thermal benchmark — if your panel ambient runs hotter, you derate per the manufacturer's curve. Integrated earth-leakage protection is built in, not an add-on module. Sensitivity is selectable: 30 mA, 100 mA, 300 mA, 500 mA, 1 A, 3 A, and 5 A, for both Class A and Class AC detection. IK07 impact resistance handles light mechanical knocks during installation.
Mounts flat on a backplate, horizontally or vertically. The 9-module width at 108 mm and 144 mm height with 80 mm depth fits standard distribution board cutouts. Connection pitch: 35 mm with spreaders, 27 mm without. Both line and load connections are front-accessed — compression lugs or busbars. That front-access layout keeps wiring clear of the backpanel and makes swap-out easier in a live panel.