{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU7136-4DB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU7136-4DB0","canonicalUrl":"https://aoctrl.com/siemens/3RU7136-4DB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RU7136-4DB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS thermal overload relay, 3RU7136-4DB0, S2 size, 25 A rated current, Class 10 trip, contactor-mount.","salesMarkdown":"The Siemens 3RU7136-4DB0 is a SIRIUS thermal overload relay in the S2 frame size, rated for a continuous operational current of 25 A and a trip class of Class 10. It mounts directly onto a contactor of the same S2 size, protecting a three-phase motor circuit against sustained overloads by sensing the heat generated in the bimetallic strip. The 25 A rated current sets the maximum continuous load the relay can carry without nuisance tripping; for a motor circuit, you size the relay to the motor's full-load amps, typically 1.0 to 1.05× FLA. The S2 frame is the mechanical envelope; it physically matches the S2 contactor footprint, so the relay clips onto the contactor without extra brackets. The relay accepts screw-type terminals for both the main and auxiliary circuits. Wire range is 2× (0.5 to 1.5 mm²) solid or stranded, or 2× (0.75 to 2.5 mm²). Terminal torque for the main circuit is 3 to 4.5 N·m; for auxiliary contacts, 0.8 to 1.2 N·m. Side spacing to grounded parts must be at least 6 mm.","metaTitle":"Siemens 3RU7136-4DB0 SIRIUS Thermal Overload Relay, 25 A, Cl","metaDescription":"Siemens 3RU7136-4DB0 SIRIUS thermal overload relay, 25 A rated current, Class 10 trip, S2 size, contactor-mount. Current production. Sourced to order against RFQ.","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":"3.5 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":"10.5 W","Operating Voltage Rated Value":"690 V","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"25 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":"10.5 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"18 ... 25 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/0b5206cef1b68a81d1b6a849d6426c56.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1534256&mlfb=3RU7136-4DB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU7136-4DB0/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings I need to check for fit?","answer":"The relay is rated for 25 A continuous current with a Class 10 trip characteristic. It is a three-pole thermal overload relay for AC/DC main circuits up to 690 V at 50/60 Hz."},{"question":"What contactor does this relay mount to?","answer":"It mounts to a SIRIUS contactor of the same S2 size. The fastening method is contactor mounting — no separate bracket required."},{"question":"What wire sizes and terminal torques are required?","answer":"Main and auxiliary terminals accept 2× (0.5 to 1.5 mm²) or 2× (0.75 to 2.5 mm²) solid or stranded wire. Main circuit torque: 3 to 4.5 N·m. Auxiliary contact torque: 0.8 to 1.2 N·m."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU7136-4DB0","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/3RU7136-4DB0 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}}