{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU2116-1KC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU2116-1KC0","canonicalUrl":"https://aoctrl.com/siemens/3RU2116-1KC0","factsUrl":"https://aoctrl.com/api/mcp/products/3RU2116-1KC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS thermal overload relay, Size S00, Trip Class 10, 690 V rated, spring-loaded terminals, contactor mounting.","salesMarkdown":"It uses a thermal bimetallic release that tracks the motor's heating curve, tripping the connected contactor when current exceeds the set threshold for too long. Rated for 690 V and Trip Class 10, meaning it will trip within 10 seconds at 7.2× the set current — standard for general-purpose induction motor starting where the inrush decays fast. This keeps nuisance trips off your line while still catching a locked rotor. Mounts directly onto a SIRIUS contactor (contactor mounting), saving DIN rail space and simplifying the power bus between the two devices. Any mounting position is permitted, so panel layout is flexible. Motor power ratings: 5.5 kW at 400 V, 7.5 kW at 500 V, and 7.5 kW at 690 V — these are the AC-3e (squirrel-cage motor) values that govern real-world motor sizing. Also carries a 12.5 A rating at both 480 V and 600 V for North American installations. Switching capacity at various control voltages: 2 A at 24 V, 3 A at 120 V, 2 A at 230 V, 1 A at 400 V, 0.75 A at 690 V. These are the auxiliary contact ratings — the relay's internal integrated auxiliary switch handles the contactor coil or PLC input, not the motor power. Temperature compensation is active from -40 to +60 °C, so the trip curve stays accurate across the panel's ambient range. Power dissipation per pole is 2.2 W — relevant for enclosure heat calculations when multiple relays are ganged in a small panel. ## Wiring and integration Main current circuit uses spring-loaded terminals, accepting 2x (0.5 to 2.5 mm²) solid or stranded wire. No screw torque to verify — just strip 8–10 mm and push in. The auxiliary switch is integrated, so no separate block to order. Dimensions: 45 mm wide, 87 mm high, 70 mm deep — fits the standard S00 footprint. The depth is the critical dimension when the relay is mounted on the contactor, as it projects forward from the contactor face. The note on this unit reads \"for message 'Tripped'\" — meaning the auxiliary contacts are configured to signal a tripped state back to the PLC or annunciator, not just drop out the contactor. Useful for remote fault indication. Substance prohibitance date of 10/01/2009 aligns with RoHS compliance (RoHS took effect 2006, with some exemptions). The relay is part of the SIRIUS family, widely used in European and global panel designs. MTTF with high demand rate is 2,280 years — a reliability figure for safety-related applications, indicating very low random failure rate under continuous cycling.","metaTitle":"Siemens 3RU2116-1KC0 SIRIUS Thermal Overload Relay, Size S00","metaDescription":"Siemens SIRIUS 3RU2116-1KC0 thermal overload relay, Size S00, Trip Class 10, 690 V rated, spring-loaded terminals, contactor mounting. Active production. Source via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Overload Relays"],"specifications":{"Note":"for message \"Tripped\"","Depth":"70 mm","Width":"45 mm","Height":"87 mm","at 24 V":"2 A","at 60 V":"0.3 A","Per Pole":"2.2 W","at 110 V":"0.22 A","at 120 V":"3 A","at 125 V":"0.22 A","at 220 V":"0.11 A","at 230 V":"2 A","at 400 V":"1 A","at 690 V":"0.75 A","Trip Class":"CLASS 10","Rated Value":"690 V","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-40 ... +70 °C","During Transport":"-55 ... +80 °C","Fastening Method":"Contactor mounting","Mounting Position":"any","Solid Or Stranded":"2x (0.5 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"thermal overload relay","at 400 V rated value":"5.5 kW","at 480 V rated value":"12.5 A","at 500 V rated value":"7.5 kW","at 600 V rated value":"12.5 A","at 690 V rated value":"7.5 kW","Size Of Overload Relay":"S00","For Main Current Circuit":"spring-loaded terminals","Temperature Compensation":"-40 ... +60 °C","MTTF with high demand rate":"2 280 a","Design Of Screwdriver Shaft":"Diameter 3 mm","Size Of The Screwdriver Tip":"3,0 x 0,5 mm","at AC-3e rated value maximum":"690 V","Substance Prohibitance (Date)":"10/01/2009","Design Of The Auxiliary Switch":"integrated","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"12.5 A","at AWG cables for main contacts":"1x (20 ... 12)","For Auxiliary And Control Circuit":"spring-loaded terminals","Between Main And Auxiliary Circuit":"440 V","Relative Humidity During Operation":"10 ... 95 %","Display Version For Switching Status":"Slide switch","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 14)","Between Auxiliary And Auxiliary Circuit":"440 V","reference code according to IEC 81346-2":"F","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number Of Poles For Main Current Circuit":"3","Finely Stranded Without Core End Processing":"2x (0.5 ... 1.5 mm²)","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","shock resistance according to IEC 60068-2-27":"8g / 11 ms","operational current at AC-3e at 400 V rated value":"12.5 A","Size Of Contactor Can Be Combined Company-Specific":"S00","contact rating of auxiliary contacts according to UL":"B600 / R300","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Arrangement Of Electrical Connectors For Main Current Circuit":"Top and bottom","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gG: 6 A, quick: 10 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Product Component Removable Terminal For Auxiliary And Control Circuit":"No","power loss [W] for rated value of the current at AC in hot operating state":"6.6 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"9 ... 12.5 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$86.17","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3f0f27dac0bc93b49c82be533577b962.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=24188&mlfb=3RU2116-1KC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU2116-1KC0/alternatives.json"},"ai":{"faq":[{"question":"What does the note 'for message Tripped' mean?","answer":"The auxiliary contacts on this relay are configured to signal a 'Tripped' message back to a PLC or annunciator, providing remote fault indication rather than just dropping out the contactor."},{"question":"What are the key motor power ratings for this relay?","answer":"Rated motor power is 5.5 kW at 400 V, 7.5 kW at 500 V, and 7.5 kW at 690 V under AC-3e duty. Also carries a 12.5 A rating at both 480 V and 600 V for North American installations."},{"question":"What is the physical size and mounting method?","answer":"Size S00 — 45 mm wide, 87 mm high, 70 mm deep. Mounts directly onto a SIRIUS contactor (contactor mounting) in any position, saving DIN rail space."},{"question":"What wiring terminals does it use?","answer":"Spring-loaded terminals on the main current circuit, accepting 2x (0.5 to 2.5 mm²) solid or stranded wire. The auxiliary switch is integrated, so no separate block needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU2116-1KC0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RU2116-1KC0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}