DC-rated miniature circuit breaker for distribution panels
The MGN61847 is a 2-pole DC miniature circuit breaker from the Multi9 C60H-DC series, rated 8 A at 50 °C with a C curve (magnetic trip at 8.5 x In ±20 % DC). Its breaking capacity reaches 20 kA Icu at 220/250 V DC, 10 kA at 440 V DC, and 6 kA at 500 V DC — covering the common DC bus voltages in industrial control panels and telecom distribution. Clip-on mounting to DIN rail (36 mm wide, 4 x 9 mm pitches) and tunnel terminals accepting up to 25 mm² rigid stranded make it a direct swap in existing Multi9 distribution boards. The toggle switch provides local ON/OFF indication and is padlockable for lockout/tagout.
Breaking capacity and selectivity in DC circuits
The 20 kA Icu at 250 V DC is the headline figure — enough to clear faults on most 250 V DC bus systems without cascading upstream.
Integration into DC distribution panels
The 36 mm width (2-pole) fits Multi9 comb busbars and accessory footprints. Tunnel terminals accept one or two conductors per pole — up to 25 mm² rigid stranded, or 16 mm² flexible with ferrule. Tightening torque 2.5 N·m; strip length 14 mm. Pollution degree 3 (industrial environment) and tropicalisation class 2 per IEC 60068-2 cover high-humidity installations (95 % RH at 55 °C).
