The C60H4P40AB is a 40 A, 4-pole miniature circuit breaker from the Schneider Electric Multi9 C60H series. It uses a thermal-magnetic trip unit with a B curve (magnetic tripping between 3 and 5 times In), making it suitable for protecting wiring and general-purpose loads in distribution panels. Rated breaking capacity is 10 kA Icn at 230/400 V AC per EN 60898, with higher Icu values per IEC 60947-2 — up to 30 kA at 230...240 V AC and 40 kA at 125 V DC for the 4-pole configuration.
The B curve (3–5× In) means the magnetic trip responds between 120 A and 200 A — fast enough to clear a hard short but tolerant of modest inrush, which suits resistive loads and general distribution. The 10 kA Icn per EN 60898 is the rated short-circuit capacity for a standard domestic or light commercial panel at 230/400 V; the higher Icu per IEC 60947-2 (e.g., 30 kA at 230...240 V AC) applies when the breaker is used in an industrial context where the prospective fault current is higher. The service breaking capacity Ics is 7.5 kA at 230/400 V per EN 60898 — the level the breaker can clear and still be used afterward.
This is a distribution-grade MCB for final subcircuits in commercial buildings, light industrial panels, and residential distribution boards. The 4-pole configuration (4 protected poles) makes it suitable for three-phase plus neutral circuits. The toggle switch provides local ON/OFF indication, and the contact position indicator confirms isolation status — it is certified for isolation per IEC 60947-2.