The Schneider Electric C60H2P40AC is a Multi9 C60H miniature circuit breaker (MCB) rated at 40 A at 30 °C, with a C curve (magnetic trip at 5 to 10 times In). The thermal-magnetic trip handles overloads and short circuits, and the breaking capacity reaches 30 kA at 230-240 V AC, 15 kA at 400-415 V AC, and 10 kA at 440 V AC (all per IEC 60947-2).
DIN-rail fit and panel space
The breaker occupies 4 modules of 9 mm pitch (36 mm total width), 81 mm tall, 73 mm deep. That 73 mm depth is the dimension to watch when you're laying out a shallow enclosure — it's the body depth, not including the toggle throw. Terminals accept up to 35 mm² rigid or 25 mm² flexible wire; strip length is 14 mm, and the recommended tightening torque is 3.5 N·m. The tunnel-type terminals are the standard cage-clamp style, so a good screwdriver with a parallel tip (not a pozi) seats the conductor cleanly.
The C curve (5-10 x In) means the magnetic trip kicks in between 200 A and 400 A. That's the standard curve for general-purpose distribution — lighting, socket outlets, small motor circuits where inrush isn't extreme. The limitation class is 3 per IEC 60947-2, which limits let-through energy — important for downstream cable protection.