The MGN25138 is a C60H miniature circuit breaker from the Multi9 range, rated 1 A at 50 °C with a D tripping curve. Breaking capacity is 30 kA Icu at 240 V AC, 15 kA at 415 V, and 10 kA at 440 V, all phase-to-phase per EN/IEC 60947-2. The 30 kA rating at 240 V covers high-fault panelboards in commercial and light industrial distribution; the 10 kA at 440 V is the limiting figure for three-phase 400 V systems. Service breaking capacity (Ics) is 50 % of Icu at each voltage level. Four protected poles (4P) switch all phases and neutral in a single 72 mm wide module. The thermal-magnetic trip unit combines a bimetal for overloads and a solenoid for short-circuits — no auxiliary power needed.
Snaps onto 35 mm symmetrical DIN rail (EN 60715) in a fixed mounting position. The 72 mm width occupies 8 x 9 mm pitches, so plan for 8 module spaces in a distribution board. Depth is 73 mm — check gland plate clearance if the panel is shallow. IP20 finger-safe front, suitable for enclosed panels. The toggle actuator gives local ON/OFF indication with a visible contact position indicator for safe isolation verification.
Rated for 10,000 electrical cycles and 20,000 mechanical cycles per EN/IEC 60947-2, which aligns with typical panel life in distribution duty. The separate earth-leakage block option (Vigi C60) allows add-on RCD protection without replacing the breaker.