The C10F4TM050 is a ComPacT NSX frame circuit breaker with a 50 A thermal-magnetic TM-D trip unit, 4 poles, and a breaking capacity of 85 kA Icu at 240 V AC — that's the maximum fault current it can safely interrupt at that voltage, which covers most North American 240 V distribution panels. At 415 V AC (common in European industrial grids) it still holds 36 kA Icu, enough for main or branch feeder duty in a typical 400 V MCC. The thermal-magnetic trip gives you fixed overload protection (thermal) and fixed short-circuit protection (magnetic) — no interchangeable rating plugs, so the 50 A setting is hard-wired into the BOM. The toggle control gives a clear visual indication of the contact position, and the front-face connections (both upside and downside) simplify busbar or cable routing in a panel.
The 140 mm width and 161 mm height fit the standard ComPacT NSX cutout; the 86 mm depth leaves room for rear-access cabling. IP40 front face keeps tools and fingers out; IK07 impact resistance handles accidental bumps during maintenance.
The suitability-for-isolation marking (IEC 60947-2) means it can be used as a disconnecting means — you can safely isolate the downstream circuit for maintenance. Overvoltage category III suits fixed-installation distribution boards. The 50,000-cycle mechanical durability and 30,000-cycle electrical durability at 440 V In give a realistic service life for a feeder breaker in a production line.