It mounts directly onto a S0 contactor, forming a compact motor starter assembly for panel builds. The relay uses a bimetallic thermal element to track motor heating — no electronics to fail in dirty environments. Rated operational current is 4 A, with a trip class of CLASS 10 — meaning it will trip within 10 seconds at 7.2× the current setting, matching the startup profile of standard induction motors. Rated operating voltage is 690 V AC/DC, and the relay handles 50/60 Hz supply. The thermal memory means it won't reset instantly after a trip, which protects motors from rapid re-acceleration.
This is a contactor-mount relay — it snaps onto the bottom of a S0-frame contactor, no DIN rail needed. The mounting position allows ±135° rotation and ±45° tilt from vertical, so it adapts to tight enclosures. Width is 45 mm, depth 96 mm, height 97 mm — plan for 6 mm side clearance to grounded parts. Screw terminals for both main and auxiliary circuits; torque main contacts to 2–2.5 N·m, aux contacts to 0.8–1.2 N·m. Installation altitude limited to 2000 m above sea level.