It mounts directly onto a compatible S2 contactor (no separate DIN-rail bracket needed), saving panel space and simplifying wiring. The screw-type main terminals accept 2x (0.75...2.5 mm²) solid or stranded wire, torqued to 3...4.5 N·m.
Key ratings in context
The 57 A rating is the continuous operational current for AC motor duty. That number, not a higher short-time rating, is what governs the motor FLA it can protect — size the overload for the motor nameplate amps, not the relay's maximum. The 17.1 W typical power loss at rated current means it stays cool enough in a standard IP20 enclosure, but if you're stacking relays side-by-side in a confined panel, check the 6 mm side spacing requirement to grounded parts. Auxiliary contacts handle 3 A at 24 V and 2 A at 230 V, with a DC-13 rating of 1 A at 24 V for solenoid loads. The 6 kV surge voltage resistance (rated impulse withstand) means it can handle typical industrial transients without flashover.
This is a contactor-mount overload relay for the SIRIUS S2 platform. It bolts directly onto the output side of a matching S2 contactor (e.g., 3RT7036 series) — no extra wiring between contactor and overload. Ambient operating range is -20 to +55 °C, with 0...90 % relative humidity (non-condensing).