The thermal-magnetic trip covers both overload (thermal bimetal, slow curve) and short-circuit (magnetic, instantaneous) without needing an external relay. Above that, the thermal element adjusts — the datasheet derating curve applies. The 3-pole unit handles three-phase loads (pumps, small conveyors, lighting banks) or three single-phase circuits ganged together.
Mounts on a backplate via the 9-module pitch (81 mm wide, 137 mm high, 80 mm deep). Connection is front-front — both line and load terminals are accessible from the front, which simplifies panel wiring and busbar routing. Terminals accept compression lugs or busbars; the connection pitch is 35 mm with spreaders, 27 mm without.
No official successor listed — this is the current build. If you're holding an older NSXm variant, the C11B3TM025B is the direct production-grade replacement, same footprint, same trip curve.
Overvoltage category III (distribution level) and pollution degree 3. IK07 impact resistance (conforming to IEC 62262) means it withstands a 2 J impact — typical for panel-mounted gear. The grey (RAL 7016) colour is the standard Schneider industrial grey. Power dissipation per pole is 2.8 W, so total 8.4 W at full load — factor that into panel thermal calculations if the enclosure is sealed. Mechanical durability is 20,000 cycles; electrical durability varies by load: 20,000 cycles at 440 V at half-rated current, 10,000 at full rated current, and 5,000 at 690 V.