The Schneider Electric C11N6TM016L is a ComPacT NSXm circuit breaker with a 16 A thermal-magnetic trip unit (TM-D), four poles, and a breaking capacity of 50 kA at 415 V AC (performance level N). It is designed for distribution applications and certified to EN/IEC 60947-2, which covers the requirements for low-voltage switchgear and controlgear — so it is suitable for isolation (marked accordingly) and can be used in main or sub-distribution boards where fault levels reach that range.
What the ratings mean for fit
The 16 A rating at 40 °C is the continuous current the breaker carries without tripping under normal ambient conditions. If your panel runs hotter than 40 °C, you need to derate — the trip curve shifts, and the breaker may nuisance-trip at lower loads. The 50 kA breaking capacity at 415 V AC tells you the maximum fault current it can safely interrupt without welding contacts or venting arc gas; that is the SCCR (short-circuit current rating) for the branch, and it must equal or exceed the available fault current at the point of installation. The 4-pole version (4P) switches all three phases plus the neutral, which is required for TN-S or TT systems where the neutral is switched for isolation.
Mounting and integration
Mounts on a backplate (not DIN rail) — the 108 mm width, 137 mm height, and 80 mm depth fit standard panel cutouts for the NSXm family. Connection is front-facing on both line and load sides, with Everlink lugs accepting 2.5 to 95 mm² rigid or stranded aluminium/copper, or 2.5 to 70 mm² flexible copper. The 35 mm connection pitch (27 mm without spreaders) matches busbar systems. IP40 front face (IK07 impact) means it is protected against tools and small wires but not against water — keep it inside a closed panel.