The MGN60912 is a Schneider Electric C60N miniature circuit breaker from the Multi9 range, configured as a 4-pole unit with a C-curve and a 50 A rated current at 50 °C per EN/IEC 60947-2. This is the breaker you spec when you need a 4P thermal-magnetic MCB for distribution in a 35 mm DIN-rail panel — the C-curve magnetic trip at 8.5 x In (±20%) suits moderate inrush loads like small motors or transformers, not pure resistive or high-surge circuits.
Rated Icu of 20 kA at 240 V AC phase-to-phase, 10 kA at 415 V AC, and 6 kA at 440 V AC — all per EN/IEC 60947-2. The Ics (service breaking capacity) is 75% of Icu at each voltage level, so at 240 V it clears 15 kA and remains functional afterward. For a distribution board fed by a transformer with a 10 kA prospective fault current at 415 V, this breaker holds coordination without cascading upstream. The 4-pole design isolates all phases and neutral on a fault.
Snaps onto 35 mm symmetrical DIN rail. Occupies 8 module pitches (72 mm wide) — plan your DIN rail fill accordingly. Tunnel terminals accept 1.5 to 35 mm² rigid or flexible (with/without ferrule); strip length 14 mm, torque to 3.5 N·m. IP20 finger-safe front. The toggle gives local ON/OFF indication. Pollution degree 3 rated, so it's fine for control panels in industrial environments where some conductive dust is present.