The Schneider Electric C25N6TM200C is a ComPacT NSX250N 4-pole moulded-case circuit breaker (MCCB) rated 200 A at 50 °C, with a thermal-magnetic TM-D trip unit that provides L (overload) and I (short-circuit) protection.
At 240 V AC the same unit handles 90 kA Icu, which covers most North American panelboard applications. The 200 A continuous rating at 50 °C is the thermal limit for the trip unit; if your enclosure runs hotter, you need to derate per the manufacturer's curve. The TM-D trip unit is fixed thermal-magnetic — no interchangeable electronic modules, no adjustable long-time or short-time settings. That simplifies ordering and spares management: what you see is what you get.
The 140 mm width, 161 mm height, and 86 mm depth fit the standard ComPacT NSX cutout. Front connections top and bottom, 35 mm connection pitch for busbar or cable lugs. The toggle control is manual only — no rotary handle or motor operator included, but the 5 accessory slots accept shunt trips, auxiliary contacts, or undervoltage releases if you need remote tripping.