{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU2136-4GD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU2136-4GD0","canonicalUrl":"https://aoctrl.com/siemens/3RU2136-4GD0","factsUrl":"https://aoctrl.com/api/mcp/products/3RU2136-4GD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RU2136-4GD0 thermal overload relay, size S2, Class 10, 690 V rated, contactor-mount, 105 mm depth.","salesMarkdown":"It is a Class 10 device, meaning it will trip within 10 seconds at 7.2× the set current — the standard trip class for standard-start induction motors, not for high-inertia loads that need a slower Class 20 or 30. Rated for a maximum of 690 V, it carries motor power ratings of 22 kW at 400 V, 30 kW at 500 V, and 37 kW at 690 V. At 480 V and 600 V it is rated for 45 A. The auxiliary contact block is integrated, with switching capacities of 2 A at 24 V, 3 A at 120 V, 2 A at 230 V, 1 A at 400 V, and 0.75 A at 690 V. The overload release is thermal, with temperature compensation active from -40 to +60 °C. The relay mounts directly onto a contactor (contactor mounting), in any position. The main circuit terminals are screw-type, accepting 2× (0.5 to 2.5 mm²) solid or stranded wire, requiring a Pozidriv PZ2 screwdriver tip. RoHS compliance is documented with a substance prohibitance date of October 15, 2014, covering the standard EU RoHS scope. ## Integration notes The relay measures 55 mm wide, 90 mm high, and 105 mm deep. It mounts directly onto a contactor — no DIN rail required, but the contactor itself is typically DIN-rail mounted in the panel. The M6 main contact screws and the 5–6 mm diameter screwdriver shaft specification are standard for panel wiring. Power dissipation per pole is 5.2 W, so for a three-phase motor the total heat load in the enclosure is about 15.6 W from the relay alone. Account for this when sizing panel ventilation. The note on the component line reads \"for message 'Tripped'\", which is the status indication the relay sends to a PLC or HMI when it has operated.","metaTitle":"Siemens 3RU2136-4GD0 SIRIUS Thermal Overload Relay, Class 10","metaDescription":"Siemens SIRIUS 3RU2136-4GD0 thermal overload relay, size S2, Class 10, 690V rated. Current production. Motor ratings to 37 kW at 690V. Contactor-mount. RFQ for pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Overload Relays"],"specifications":{"Note":"for message \"Tripped\"","Depth":"105 mm","Width":"55 mm","Height":"90 mm","at 24 V":"2 A","at 60 V":"0.3 A","Per Pole":"5.2 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","For Main Contacts":"M6","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":"22 kW","at 480 V rated value":"45 A","at 500 V rated value":"30 kW","at 600 V rated value":"45 A","at 690 V rated value":"37 kW","Size Of Overload Relay":"S2","For Main Current Circuit":"screw-type terminals","Temperature Compensation":"-40 ... +60 °C","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)":"10/15/2014","Design Of The Auxiliary Switch":"integrated","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"45 A","For Auxiliary And Control Circuit":"spring-loaded terminals","Between Main And Auxiliary Circuit":"690 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":"415 V","reference code according to IEC 81346-2":"F","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","For Main Contacts With Screw-Type Terminals":"3 ... 4.5 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","operational current at AC-3e at 400 V rated value":"45 A","Size Of Contactor Can Be Combined Company-Specific":"S2","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":"15.6 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"36 ... 45 A","Design Of The Miniature Circuit Breaker For Short-Circuit Protection Of The Auxiliary Switch Required":"6A (SCC less than equal to 0.5 kA; U less than equal to 260V)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c063c21d45bb79954523f24f487aef5c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=38325&mlfb=3RU2136-4GD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU2136-4GD0/alternatives.json"},"ai":{"faq":[{"question":"What are the key motor power ratings for this relay?","answer":"At 400 V it is rated for 22 kW, at 500 V for 30 kW, and at 690 V for 37 kW. At 480 V and 600 V the current rating is 45 A."},{"question":"What is the trip class and what does it mean?","answer":"It is Class 10, meaning it will trip within 10 seconds at 7.2× the set current. This is the standard class for general-purpose induction motor starting."},{"question":"Does this relay mount on a DIN rail or directly on a contactor?","answer":"It is designed for contactor mounting — it snaps directly onto the matching SIRIUS contactor. The contactor itself is typically DIN-rail mounted in the panel."},{"question":"What compliance documentation is available?","answer":"RoHS compliance is documented with a substance prohibitance date of October 15, 2014. Standard Siemens SIRIUS documentation includes CE and UL/CSA certifications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU2136-4GD0","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/3RU2136-4GD0 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}}