The thermal bimetal release mechanism compensates for ambient temperature changes from -40 to +60 °C, so the trip curve stays accurate whether the relay is in a heated control room or a cold warehouse.
Mounts directly onto the contactor via the fastening method — no separate DIN-rail clip needed, which saves a panel row. The 45 x 85 x 85 mm footprint matches the SIRIUS S0 contactor outline. Screw-type terminals on the main current circuit accept 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid or stranded wire. A Pozidriv PZ 2 screwdriver with 5 to 6 mm shaft diameter is specified for termination.
Auxiliary contact ratings and signal feedback
An integrated auxiliary switch provides remote trip indication — the Note "for message Tripped" on the order code signals that this variant includes a dedicated contact to report the overload state to a PLC or annunciator. The auxiliary contact is rated for switching: 2 A at 24 V, 3 A at 120 V, 2 A at 230 V, and 1 A at 400 V. At lower DC voltages it handles 0.3 A at 60 V and 0.22 A at 110/125/220 V — sufficient for most 24 VDC control circuits.