It mounts directly onto a contactor, saving panel space and simplifying wiring. The 50/60 Hz operating frequency matches standard mains supplies.
The contactor-mount fastening method means no additional DIN-rail clip is required; it snaps onto the contactor's own mounting base. Auxiliary switch is integrated, saving an add-on block for status feedback. The thermal design compensates for ambient temperature from -40°C to +60°C, so the trip curve stays accurate in hot enclosures near motors.
It is a direct-mount companion to Siemens SIRIUS contactors of the same S0 frame size. When sourcing, verify the contactor's mounting interface matches the relay's base — the S0 frame is a standard Siemens platform, so fit is consistent across the SIRIUS range.
Integration notes
Main circuit connections accept ring cable lugs; screw terminals with a Pozidriv PZ2 tip are used for the auxiliary circuit. The screwdriver shaft diameter is 5–6 mm, so a standard electrician's screwdriver fits. The relay includes a 'Tripped' message indicator (note on the front), giving immediate visual confirmation of an overload condition without needing to open the panel door.