SIRIUS S12 contactor — 200-277 V AC/DC coil
The coil operates across both AC and DC supplies in that voltage window, so a single part covers control circuits that might switch between transformer and battery-backed power. Mounting is screw-fixed, with the vertical surface rotatable ±90° and tiltable ±22.5° front-to-back, giving panel builders flexibility in tight enclosures.
The 75-year MTBF figure reflects a component designed for high-cycle industrial duty — this is not a throwaway relay; it is sized for years of continuous operation in a panel that stays live. Auxiliary contacts are included, rated at 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, and 0.3 A at 220 V — enough for pilot-duty signaling on most control voltages. The main power terminals accept stranded cable from 70 to 240 mm², while the coil terminals take 0.5–4 mm² solid or stranded — no adapter lugs needed for standard panel wiring.
The contactor measures 214 mm high, 160 mm wide, and 225 mm deep — a substantial frame that needs a backplate or DIN-rail adapter (screw-fix only, no snap-on). Single 11 mm mounting hole; plan for a 10 mm bolt or M10 stud.