The MGN10556 is a Domae-series comb busbar from Schneider Electric — 3L+N configuration, 18 mm pitch, 12 modules wide, rated 60 A at 40 °C and 230 V AC phase-to-neutral / 400 V AC phase-to-phase. It is an uncuttable, insulated busbar designed for horizontal mounting in a DIN-rail enclosure, feeding power from an incomer (1 way, 3P+N, fork connector) to two outgoer sections: one with 3 ways L (fork) and one with 5 ways N+L (tooth connector). The 220 mm width and 24 x 9 mm pitches match standard modular distribution boards.
This part is obsolete per Schneider's lifecycle status.
Mounts horizontally at the bottom of tunnel-type terminals or biconnect blocks. The incomer uses an 18 mm pitch fork connector (72 mm between ways); outgoer 1 uses 18 mm pitch fork; outgoer 2 uses 9 mm pitch tooth connectors. The 60 A rating at 40 °C governs the upstream breaker sizing — no derating needed for a 40 °C cabinet ambient as long as the busbar is clear of heat sources.