The C11F4TM063L is a Schneider Electric ComPacT NSXm thermal-magnetic circuit breaker, rated 63 A at 40 °C with 4 poles and an F-class breaking capacity of 36 kA at 415 V AC. The thermal-magnetic trip unit (TM-D) gives you an inverse-time thermal curve for overloads and a fixed magnetic instantaneous trip for short-circuits; no adjustments, which keeps the spec simple for distribution boards. Mounting is on a backplate, not DIN rail — the 108 mm width and 137 mm height fit standard panel cutouts for the NSXm range. The 4-pole configuration with neutral on the left suits three-phase plus neutral distribution. Front connections top and bottom, with Everlink lugs accepting up to 95 mm² rigid or stranded aluminium/copper. That's a generous wire range for a 63 A breaker; you won't need reducers for typical panel feed conductors.
Integration and compliance notes
The 9 mm pitch takes 12 modules of width. Connection pitch is 35 mm with spreaders, 27 mm without — useful to know when laying out busbars or cable ducts in the panel. Electrical durability is 20,000 cycles at 440 V In/2 and 10,000 cycles at 440 V In; mechanical durability is 20,000 cycles. That's standard for a molded-case breaker in distribution duty — not a high-cycle motor-starting application. The grey RAL 7016 colour is the standard NSXm finish. No earth-leakage protection built in (TM-D trip unit is thermal-magnetic only). Operating altitude is 2000 m without derating, 5000 m with derating — relevant if the panel goes into a high-altitude installation.