The Schneider Electric C11N34V100B is a ComPacT NSXm earth leakage circuit breaker (ELCB) — a 3-pole, 100 A rated device with an electronic MicroLogic 4.1 trip unit and integrated earth-leakage protection. It's built to EN/IEC 60947-2, so it's a molded-case breaker designed for distribution panels rather than motor protection. The earth-leakage piece is built in, not an add-on module. You get adjustable sensitivity from 30 mA up to 5 A, for both class A and class AC leakage types. That means it can protect against both sinusoidal and pulsed DC ground faults — class A covers the waveforms you get from rectified loads like VFDs or switching power supplies.
It's 9 module pitches wide (108 mm), 144 mm tall, 80 mm deep. Connection is front-front (both line and load from the front face), using compression lugs or busbars. Connection pitch is 35 mm with spreaders, 27 mm without — that matters when you're laying out busbar runs in a multi-breaker lineup. Overvoltage category IV means it's designed for the utility entrance side of the installation, not just downstream sub-panels. Operating altitude is 2000 m without derating, 5000 m with derating — if you're installing at elevation, you'll need to factor that into the trip settings.
Durability and mechanical life
Rated for 20,000 mechanical cycles and 20,000 electrical cycles at 440 V at rated current (In/2), dropping to 10,000 cycles at full rated current (In). That's typical for a distribution breaker — it's not a contactor meant for frequent switching, but it'll handle routine isolation and infrequent load switching for decades in a panel.