The C11F44V050L is a Schneider Electric ComPacT NSXm 4-pole MCCB rated 50 A at 40 °C, with a MicroLogic 4.1 electronic trip unit and integrated earth-leakage protection. The toggle control and front-facing connections make it straightforward to wire into a distribution panel mounted on a backplate. EN/IEC 60947-2 compliance covers the application standard for circuit-breakers in industrial and commercial power systems.
Overvoltage category IV means it's rated for installation at the origin of the installation, not just downstream sub-distribution. Pollution degree 3 (IEC 60664-1) confirms it tolerates conductive pollution typical in industrial panels — no special conformal coating needed. The integrated earth-leakage protection covers both class A and class AC sensitivities from 30 mA up to 5 A — selectable via the trip unit settings. That saves an external RCCB module and one DIN-space.
No DIN-rail clip; it's bolted through the mounting holes. The 4-pole footprint is 12 modules of 9 mm pitch (108 mm wide), 144 mm tall, 80 mm deep. Connection pitch is 35 mm with spreaders, 27 mm without — so busbar or cable lugs need to match. Everlink terminals accept 2.5–70 mm² fine-stranded copper or 2.5–95 mm² rigid/stranded aluminium/copper. Neutral is on the left. IK07 impact rating handles a 2 J blow (roughly a hammer tap) without cracking the case. The local signalling flag shows green when auxiliary contacts are present — a quick visual check without opening the door.