Integrator note — what this relay does and where it lands
The Siemens 3RU2116-0JC0-ZX95 is a SIRIUS thermal overload relay in size S00, designed for direct mounting onto a contactor. It protects motors against overload and phase failure by sensing the thermal current in the main circuit and tripping the contactor via its integrated auxiliary switch. The relay carries a CLASS 10 trip characteristic, meaning it will trip within 10 seconds at 7.2× the current setting — the standard match for standard induction motor starts that don't drag on startup. Rated voltage is 690 V, and the current ratings are voltage-dependent: 2 A at 24 V, 3 A at 120 V, 2 A at 230 V, 1 A at 400 V, and 1 A at 600 V. These are the continuous current ratings through the main circuit, not the motor FLA setting range — the relay's adjustment dial covers a specific band that the buyer must verify against the motor nameplate.
Mounting and wiring — panel fit
Fastening is contactor mounting — the relay clips directly onto the matching SIRIUS contactor in size S00, saving DIN rail space. Mounting position is any, so it can be oriented vertically, horizontally, or flat in the panel without derating. Dimensions: 45 mm wide, 87 mm high, 70 mm deep — fits the standard S00 footprint. Main circuit connections use spring-loaded terminals (cage clamp), accepting 2 × (0.5 to 2.5 mm²) solid or stranded wire. The auxiliary switch is integrated — no separate add-on block needed for the trip signal. A 3 mm diameter screwdriver shaft is specified for the terminal actuation.
Environmental and compliance
Operating temperature range is -40 to +70 °C, with temperature compensation active over -40 to +60 °C. Storage and transport range is -55 to +80 °C. The relay is RoHS compliant with a substance prohibition date of 10/01/2009, covering the EU RoHS directive. MTTF with high demand rate is 2,280 years, reflecting the electromechanical reliability of the thermal bimetallic design.
Trip indication — the "Tripped" message
The note on this order code specifies "for message 'Tripped'". This means the relay is configured to output a dedicated trip signal via the integrated auxiliary switch, which can be wired to a PLC input or indicator lamp to confirm the relay has operated. It's a standard feature on SIRIUS overload relays, but this variant explicitly carries the designation, so it's the right pick if the BOM calls for a tripped-status feedback wire.