You size the relay to the motor's full-load amps; the trip curve then protects the winding insulation from thermal damage during a stall or jam.
Mounting and integration into a contactor assembly
This relay mounts directly onto the contactor via the fastening method listed as contactor mounting — no DIN rail or separate bracket needed in most SIRIUS contactor families. For auxiliary and control circuits, screw terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) finely stranded with ferrules; main circuit terminals accept 2x (16 to 12 AWG) or 2x (14 to 8 AWG). The mounting position allows ±135° rotation and ±45° tilt on a vertical surface, giving flexibility in tight panel layouts.
The relay carries ATEX approval (DMT 98 ATEX G 001) for use in potentially explosive atmospheres, and its substance prohibitance date of 07/01/2006 aligns with RoHS compliance. Surge voltage resistance is rated at 6 kV, and shock resistance is 8g for 10 ms — robust for industrial panel vibration.