Contactor for High-Current Motor and Resistive Loads
The Siemens SIRIUS 3RT1466-6AF36-ZX95 is a size S10 contactor with a 110-127 V AC/DC coil, designed for switching motor and resistive loads in industrial control panels. It accepts main conductor cross-sections up to 240 mm² stranded, so it handles the incoming power feed for large drives or distribution points without needing an additional terminal block. The screw-type coil terminals and screw fixing to the mounting surface are standard for panel builders who prefer positive retention over clip-on rails.
What the Ratings Mean for Your Panel
The S10 frame size tells you this contactor occupies a specific footprint — 145 mm wide, 202 mm deep, 210 mm tall — and its mechanical endurance of 10 million operations means it is rated for frequent cycling in applications like conveyor start/stop or compressor cycling. The coil operates on AC or DC from 110 to 127 V, so it can be driven from a common control transformer or a 125 VDC battery-backed supply without a separate rectifier. Auxiliary contact ratings drop with voltage: 10 A at 24 V, 6 A at 230 V, and 0.3 A at 220 V — the lower current at higher voltage reflects the switching arc limitation, so verify the pilot load against these curves rather than assuming a single ampacity.
Mounting and Environmental Constraints
Mounting is by screw fixing, not DIN rail, so plan for drilled holes in the backplate. The contactor can be rotated ±90° on a vertical surface or tilted ±22.5° forward and back, which helps when fitting into tight enclosures or angled subpanels. Clearance requirements: 10 mm upwards, 10 mm downwards, 20 mm forwards, and 10 mm at the side — these are the minimum air gaps for arc quenching and heat dissipation, not just wiring access. Operating temperature range is -25 to +60 °C, with storage from -55 to +80 °C, so it survives transport in cold climates but needs derating if the panel ambient exceeds 60 °C.