Siemens SIRIUS 3RT1466-2AP36 — S10 Contactor, 220-240 V AC/DC Coil
Its coil accepts 220-240 V AC or DC, giving you flexibility on control voltage regardless of whether the panel runs line-frequency or DC-supplied control circuits. The coil holds at the rated value with a pickup threshold of 0.8 x rated and a dropout of 1.1 x rated, so it stays pulled in through brownout conditions down to about 176 V. That tilt range helps when the gland plate or busbar layout forces a non-flat mounting plane. Dimensions are 210 mm high x 145 mm wide x 202 mm deep. That depth is the main thing to check against your enclosure backplate clearance — 202 mm means it won't fit a shallow 200 mm deep cabinet without a spacer or offset bracket.
The magnet coil terminates on spring-type terminals, accepting 2x (0.25... 2.5 mm²) solid or stranded. The main power circuit accepts stranded conductors from 70 up to 240 mm² — that's a heavy cable range, sized for the S10 frame's full rated current. Spring-cage on the coil side means no screw torque to forget; just strip to 8-10 mm and push in. Verify the ferrule size if you're using stranded on the coil terminals — 0.25 mm² is fine for signal-level wiring, but 2.5 mm² is what you'd run for a long coil circuit.
Auxiliary Contact Capability
The contactor ships with an auxiliary switch fitted and can accept up to 4 additional attachable auxiliary contact blocks. The built-in auxiliary contacts are rated for switching at various control voltages: 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, 6 A at 230 V, and 3 A at 400 V.
Performance and Endurance
Arcing time is 10-15 ms. Power factor at 50 Hz is 0.9; at 60 Hz it ranges 0.8 to 1.1. The -55 °C storage floor matters if the spare sits in an unheated warehouse — it won't degrade on the shelf.