The Siemens 3RU2116-1AB0-ZW96 is a SIRIUS Size S00 thermal overload relay, CLASS 10, rated 690 V. It mounts directly onto a contactor and uses screw-type terminals for the main circuit. The integrated auxiliary switch signals a tripped state — that's the 'for message Tripped' note on the line item.
Trip class and rating
CLASS 10 means the relay trips within 10 seconds at 7.2× the full-load current setting. That's the standard for standard-duty motor starting — pumps, fans, compressors. The thermal bimetallic element compensates for ambient temperature from -40 to +60 °C, so the trip curve stays stable across the panel's internal heat rise. Rated operational voltage is 690 V, with AC-3e switching capability at that same voltage. The relay carries 2 A at 24 V and 2 A at 230 V on the auxiliary contacts, so it can drive a PLC input or a small contactor coil directly.
Mounting and wiring
Fastens directly to the contactor — no DIN rail needed. Size S00 footprint: 45 mm wide, 76 mm tall, 70 mm deep. Screw terminals accept 2 × (0.5 to 1.5 mm²) solid or 2 × (0.75 to 2.5 mm²) stranded. Pozidriv PZ 2 tip, shaft diameter 5 to 6 mm. Mount in any position.