{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU2116-1KB1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU2116-1KB1","canonicalUrl":"https://aoctrl.com/siemens/3RU2116-1KB1","factsUrl":"https://aoctrl.com/api/mcp/products/3RU2116-1KB1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RU2116-1KB1 thermal overload relay, Size S00, Trip Class 10, 5.5 kW at 400 V, screw terminals, stand-alone installation.","salesMarkdown":"## Class 10 trip and motor protection That's the standard for standard-start squirrel-cage motors — it lets the inrush pass during acceleration but catches a stalled rotor before the winding insulation degrades. The 3RU2116-1KB1 is a Size S00 thermal overload relay, the compact frame in the SIRIUS family. It mounts directly below an S00 contactor or stand-alone on the panel via screw terminals. The auxiliary contact set includes a normally closed (NC) and normally open (NO) pair, with the NC contact wired in series with the contactor coil for fail-safe drop-out. ## Auxiliary contact ratings and signal wiring At 230 V it's rated 2 A, and at 400 V it's 1 A. The note 'for message Tripped' means the NC contact opens when the relay trips, giving a hardwired status signal to the controller. The M3 main contact screws are standard for this frame size. ## Temperature range and mounting flexibility Operating temperature spans -40 to +70 °C, with temperature compensation active from -40 to +60 °C. That means the trip characteristic stays accurate even in an unheated enclosure or near a hot motor — the bimetallic strip's ambient drift is corrected electronically. Dimensions are 89 mm high, 45 mm wide, 80 mm deep — the S00 footprint leaves room for terminal blocks alongside in a shallow panel.","metaTitle":"Siemens 3RU2116-1KB1 SIRIUS Overload Relay, Class 10","metaDescription":"Siemens 3RU2116-1KB1 SIRIUS thermal overload relay, Class 10 trip, Size S00, 5.5 kW at 400 V. Active production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Overload Relays"],"specifications":{"Note":"for message \"Tripped\"","Depth":"80 mm","Width":"45 mm","title":"3RU2116-1KB1","Height":"89 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","description":"Overload relay 9.0...12.5 A Thermal For motor protection Size S00, Class 10 Stand-alone installation Main circuit: Screw Auxiliary circuit: Screw Manual-Automatic-Reset","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-40 ... +70 °C","During Transport":"-55 ... +80 °C","Fastening Method":"stand-alone installation","For Main Contacts":"M3","Mounting Position":"any","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 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":"screw-type terminals","Temperature Compensation":"-40 ... +60 °C","MTTF with high demand rate":"2 280 a","Design Of Screwdriver Shaft":"Diameter 5 ... 6 mm","Size Of The Screwdriver Tip":"Pozidriv PZ 2","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":"2x (20 ... 16), 2x (18 ... 14), 2x 12","For Auxiliary And Control Circuit":"screw-type 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 ... 16), 2x (18 ... 14)","Of The Auxiliary And Control Contacts":"M3","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","For Main Contacts With Screw-Type Terminals":"0.8 ... 1.2 N·m","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","For Auxiliary Contacts With Screw-Type Terminals":"0.8 ... 1.2 N·m","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":"$34.29","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bc427aeb898df167caa0c27f0eec637f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=324329&mlfb=3RU2116-1KB1"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU2116-1KB1","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/3RU2116-1KB1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}