{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU7136-4BB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU7136-4BB0","canonicalUrl":"https://aoctrl.com/siemens/3RU7136-4BB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RU7136-4BB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RU7136-4BB0 thermal overload relay, S2 size, 20 A rated operational current, CLASS 10 trip class, 3-pole, screw-type terminals, contactor-mount.","salesMarkdown":"## What this SIRIUS overload relay does The Siemens 3RU7136-4BB0 is a SIRIUS S2-size thermal overload relay rated for a main circuit operational current of 20 A at 50/60 Hz, 690 V AC/DC. The relay mounts directly to a matching S2-size contactor (fastening method: contactor mounting) and is designed for vertical mounting surfaces with ±135° rotation and ±45° tilt to front/back. Rated operational current is 20 A — this is the continuous current the relay's bimetal elements are calibrated for at the rated ambient. If the motor's acceleration time exceeds 10 seconds, a CLASS 20 or CLASS 30 relay would be needed to avoid nuisance tripping. Auxiliary contact ratings: 3 A at 24 V and 2 A at 230 V, with 1 A at DC-13 (24 V) for the auxiliary contacts. Auxiliary terminals use 0.8–1.2 N·m. The relay is rated for 8g / 10 ms shock per IEC 60068-2-27 and can be installed at altitudes up to 2 000 m above sea level.","metaTitle":"Siemens 3RU7136-4BB0 SIRIUS thermal overload relay, 20 A","metaDescription":"Siemens 3RU7136-4BB0 SIRIUS thermal overload relay, 20 A rated current, CLASS 10 trip, S2 size, screw terminals. Active production. Quoted 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":"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":"20 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":"14 ... 20 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/b9bbb48b70c599b11f30372b72102c4e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1534255&mlfb=3RU7136-4BB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU7136-4BB0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU7136-4BB0","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/3RU7136-4BB0 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}}