{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU7136-4QB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU7136-4QB0","canonicalUrl":"https://aoctrl.com/siemens/3RU7136-4QB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RU7136-4QB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RU7136-4QB0 thermal overload relay, S2 size, 57 A rated operational current, Class 10 trip class, contactor-mount.","salesMarkdown":"It mounts directly onto a compatible S2 contactor (no separate DIN-rail bracket needed), saving panel space and simplifying wiring. The screw-type main terminals accept 2x (0.75...2.5 mm²) solid or stranded wire, torqued to 3...4.5 N·m. ## Key ratings in context The 57 A rating is the continuous operational current for AC motor duty. That number, not a higher short-time rating, is what governs the motor FLA it can protect — size the overload for the motor nameplate amps, not the relay's maximum. The 17.1 W typical power loss at rated current means it stays cool enough in a standard IP20 enclosure, but if you're stacking relays side-by-side in a confined panel, check the 6 mm side spacing requirement to grounded parts. Auxiliary contacts handle 3 A at 24 V and 2 A at 230 V, with a DC-13 rating of 1 A at 24 V for solenoid loads. The 6 kV surge voltage resistance (rated impulse withstand) means it can handle typical industrial transients without flashover. This is a contactor-mount overload relay for the SIRIUS S2 platform. It bolts directly onto the output side of a matching S2 contactor (e.g., 3RT7036 series) — no extra wiring between contactor and overload. Ambient operating range is -20 to +55 °C, with 0...90 % relative humidity (non-condensing).","metaTitle":"Siemens 3RU7136-4QB0 SIRIUS Thermal Overload Relay, 57 A, Cl","metaDescription":"Siemens 3RU7136-4QB0 SIRIUS thermal overload relay, 57 A rated current, Class 10 trip, S2 size, contactor-mount. Currently in production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"118 mm","Width":"55 mm","Height":"105 mm","at 24 V":"3 A","Per Pole":"5.7 W","at 230 V":"2 A","Trip Class":"CLASS 10","On The Front":"IP20","Of The Terminal":"IP00","lifecycle_stage":"current","During Operation":"-20 ... +55 °C","During Transport":"-25 ... +70 °C","Fastening Method":"Contactor mounting","Mounting Position":"with vertical mounting surface +/-135° rotatable, with vertical mounting surface +/- 45° tiltable to the front and back","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Thermal overload relay","Size Of Overload Relay":"S2","For Main Current Circuit":"screw-type terminals","power loss [W] total typical":"17.1 W","Operating Voltage Rated Value":"690 V","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"57 A","For Auxiliary And Control Circuit":"screw-type terminals","Relative Humidity During Operation":"0 ... 90 %","Surge Voltage Resistance Rated Value":"6 kV","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","Type Of Voltage For Main Current Circuit":"AC/DC","For Main Contacts With Screw-Type Terminals":"3 ... 4.5 N·m","shock resistance according to IEC 60068-2-27":"8g / 10 ms","Required Spacing For Grounded Parts At The Side":"6 mm","For Auxiliary Contacts With Screw-Type Terminals":"0.8 ... 1.2 N·m","Size Of Contactor Can Be Combined Company-Specific":"S2","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","operational current of auxiliary contacts at DC-13 at 24 V":"1 A","Arrangement Of Electrical Connectors For Main Current Circuit":"Top and bottom","insulation voltage with degree of pollution 3 at AC rated value":"690 V","power loss [W] for rated value of the current at AC in hot operating state":"17.1 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"47 ... 57 A","Design Of The Fuse Link For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 6 A, quick: 10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4c52a1f31748bb8281e12cf048f76ad9.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1542625&mlfb=3RU7136-4QB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU7136-4QB0/alternatives.json"},"ai":{"faq":[{"question":"Will the 3RU7136-4QB0 drop into a panel built for a 3RT7036-1AG00 contactor?","answer":"Yes, the 3RU7136-4QB0 is designed to mount directly onto S2-size SIRIUS contactors like the 3RT7036-1AG00. The mechanical interface and wiring footprint are identical — no rewiring or panel modification needed."},{"question":"What are the key dimensions of the 3RU7136-4QB0?","answer":"Width 55 mm, height 105 mm, depth 118 mm."},{"question":"What compliance documentation is available for this part?","answer":"The manufacturer provides standard Siemens SIRIUS documentation including CE, UL, CSA, and RoHS declarations. Specific certificates are available upon request through the RFQ process."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU7136-4QB0","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/3RU7136-4QB0 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}}