The relay mounts directly onto a contactor (fastening method: contactor mounting), so the entire motor starter package — contactor plus overload — occupies the same DIN-rail footprint as the contactor alone.
Motor power ratings at common voltages: 2.2 kW at 400 V, 3 kW at 500 V, and 4 kW at 690 V — these are the maximum motor sizes the relay can protect at those supply voltages when wired in a standard three-phase configuration. The integrated auxiliary switch provides signal feedback across multiple control voltages: 2 A at 24 V, 3 A at 120 V, 2 A at 230 V, and 1 A at 400 V — this covers the common control-circuit voltages found in North American and European panels, so the trip signal can be wired directly to a PLC input or a status lamp without an interposing relay. Spring-loaded terminals on the main current circuit accept 2× (0.5 to 2.5 mm²) solid or stranded wire — no screwdriver needed for the power connections, which speeds up panel wiring and eliminates the risk of loose screw terminals on high-vibration installations.
Size S00 frame: 45 mm wide, 87 mm tall, 70 mm deep. Temperature compensation is active from -40 to +60 °C, so the relay maintains its trip accuracy even when mounted near heat-generating components like contactors or drives inside a sealed cabinet.
The -ZW96 suffix indicates a special version with the "Tripped" message marking on the front face — functionally identical to the standard 3RU2116-1GC0 but with the visual indicator pre-printed for quick status identification on the panel door or in a high-density starter bank.