The C11N4TM016B is a Schneider Electric ComPacT NSXm 4-pole circuit breaker rated 16 A at 40 °C with a TM-D thermal-magnetic trip unit. It carries a 50 kA interrupting capacity at 415 V AC (performance level N), certified to EN/IEC 60947-2. This is a distribution-duty breaker for panel backplate mounting, with front-facing connections and a 12-module 9 mm pitch footprint (108 mm wide).
The 16 A continuous rating at 40 °C is the breaker's thermal current (In) — it will carry 16 A indefinitely without tripping in a 40 °C ambient. Above that, the TM-D thermal-magnetic element provides overload and short-circuit protection. The 50 kA breaking capacity at 415 V AC means this breaker can safely interrupt a fault current up to 50,000 A without welding or exploding, which covers most industrial distribution panels fed by a transformer of that voltage class.
The 108 mm width (12 x 9 mm pitches) and 137 mm height fit standard panel cutouts for the NSXm family. Front-side connections accept compression lugs or busbars; neutral is on the left.