SIRIUS S10 Contactor, 240-277 V AC/DC Coil
The Siemens 3RT1466-6AU36 is a SIRIUS S10 contactor with a 240-277 V AC/DC coil, meaning the coil accepts either AC or DC supply across that voltage range without needing a separate rectifier or coil changeover — simplifies panel wiring when the control voltage is mixed or uncertain. The coil termination uses screw-type terminals, a familiar interface for panel builders working with ferrule or ring lugs on the control circuit. An auxiliary switch is integrated on the contactor, providing a feedback or status signal without requiring a separate add-on block for basic applications.
The S10 frame measures 210 mm high, 145 mm wide, and 202 mm deep — a substantial footprint that fits standard backpanel layouts but needs the depth verified against enclosure depth and gland-plate clearance. Mounting is via screw fixing through an 11 mm hole, with the contactor rotatable ±90° on a vertical surface and tiltable ±22.5° front-to-back, offering flexibility for tight cabinet arrangements.
Power and Control Wiring
Main power terminals accept stranded conductors from 70 to 240 mm² — sized for the high-current buswork this S10 contactor handles. Auxiliary and control wiring accepts solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or up to 2x (0.75 to 4 mm²) — covers standard control cable sizes for interposing relays and PLC outputs.
Performance and Environmental Ratings
Power factor at 50 Hz is 0.9, and at 60 Hz ranges from 0.8 to 1.1 — relevant when coordinating with power-factor correction or sizing upstream protection.