The Schneider Electric C11B6TM040B is a ComPacT NSXm thermal-magnetic circuit breaker rated 40 A at 40 °C, 4 poles, with a breaking capacity of 25 kA at 415 V AC (performance level B). It's a distribution-grade MCCB for panel mounting on a backplate, wired front-to-front via compression lugs or busbars. The thermal-magnetic TM-D trip unit handles overload (thermal) and short-circuit (magnetic) protection in one block.
Mounts flat on a backplate (horizontal or vertical), 108 mm wide × 137 mm high × 80 mm deep — 12 module pitches at 9 mm. Connection pitch is 35 mm with spreaders, 27 mm without. Neutral sits on the left. IP40 front face, IK07 impact rating. Suitability for isolation confirmed per IEC 60947-2. No earth-leakage protection built in — that's handled separately downstream or via an add-on module if needed. The local flag (green) indicates presence of auxiliary contacts. Electrical durability: 20,000 cycles at 440 V In/2, 10,000 cycles at 440 V In; mechanical durability 20,000 cycles.