The MGN60537 is a Schneider Electric C60N miniature circuit breaker from the Multi9 range, rated 20 A at 50 °C per EN/IEC 60947-2. Three protected poles, 440 V AC maximum operational voltage. Thermal-magnetic trip unit gives both overload (thermal bimetal) and short-circuit (solenoid) protection in one package.
Breaking capacity is 20 kA Icu at 240 V AC phase-to-phase, 10 kA at 415 V, and 6 kA at 440 V — all per EN/IEC 60947-2. The service breaking capacity (Ics) is 75 % of Icu at each voltage level: 15 kA at 240 V, 7.5 kA at 415 V, 4.5 kA at 440 V. That 75 % Ics/Icu ratio means the breaker can be reclosed after clearing a fault at those levels without immediate replacement, which matters for uptime in distribution panels where fault currents are known and coordinated.
Snaps onto 35 mm symmetrical DIN rail (EN 60715). Occupies 6 x 9 mm pitches = 54 mm width. Tightening torque 2 N·m on the power circuit; strip length 14 mm. IP20 finger-safe front.