{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU5136-4GB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU5136-4GB0","canonicalUrl":"https://aoctrl.com/siemens/3RU5136-4GB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RU5136-4GB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS thermal overload relay, 3RU5136-4GB0, 45 A rated current, Trip Class 10, adjustable 36–45 A, for S2 contactor mounting.","salesMarkdown":"## What this 45 A overload relay does on the line The Siemens 3RU5136-4GB0 is a SIRIUS thermal overload relay rated for 45 A operational current, adjustable from 36 to 45 A via the dial. It mounts directly onto a SIRIUS S2 contactor (screw-type terminals top and bottom for the main circuit), saving panel space and wiring time. The 3-pole design handles three-phase motor loads up to 690 V, 50/60 Hz. ## Mounting and integration into a motor starter This relay fastens directly onto the contactor via the S2 interface — no separate DIN-rail footprint needed, though the assembly can be mounted on a vertical surface with ±135° rotation or ±45° tilt. Side spacing to grounded parts is 6 mm minimum. The main circuit accepts 2× (0.5…1.5 mm²) solid/stranded or 2× (0.75…2.5 mm²) finely stranded with ferrules; AWG 18–3 for the mains, 20–14 for auxiliaries. Tightening torque for the main screw terminals is 3–5 N·m.","metaTitle":"Siemens 3RU5136-4GB0 SIRIUS Overload Relay, 45 A, Class 10","metaDescription":"Siemens 3RU5136-4GB0 SIRIUS thermal overload relay, 45 A rated, Class 10 trip, adjustable 36–45 A, for S2 contactors. Current lifecycle. 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","title":"3RU5136-4GB0","Height":"105 mm","at 24 V":"1 A","Per Pole":"5.2 W","at 110 V":"0.22 A","at 230 V":"2 A","Trip Class":"CLASS 10","description":"Overload relay 36...45 A size S2, class 10 for motor protection for mounting onto contactors main circuit: screw terminal AUX. circuit: screw terminal manual automatic reset","lifecycle_stage":"current","During Operation":"-20 ... +70 °C","During Transport":"-55 ... +80 °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","For Main Current Circuit":"screw-type terminals","power loss [W] total typical":"9 W","Operating Voltage Rated Value":"690 V","Substance Prohibitance (Date)":"07/01/2006","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"45 A","for AWG cables for main contacts":"2x (18 ... 3), 1x (18 ... 1)","For Auxiliary And Control Circuit":"screw-type terminals","Relative Humidity During Operation":"0 ... 100 %","Surge Voltage Resistance Rated Value":"6 kV","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","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","shock resistance according to IEC 60068-2-27":"8g / 10 ms","Required Spacing For Grounded Parts At The Side":"6 mm","Size Of Contactor Can Be Combined Company-Specific":"S2","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 gL/gG: 6 A, quick: 10 A","Tightening Torque For Main Contacts With Screw-Type Terminals":"3 ... 5 N·m","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":"15.6 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"36 ... 45 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/baee77277f551f60b662a1e4086c354d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=621240&mlfb=3RU5136-4GB0"},"ai":{"faq":[{"question":"How to install 3RU5136-4GB0 on a contactor?","answer":"It fastens directly onto a SIRIUS S2 contactor via the mounting interface. Main circuit terminals accept screw-type connections top and bottom; tighten to 3–5 N·m."},{"question":"Where can I buy 3RU5136-4GB0 available via RFQ confirmation?","answer":"This part is sourced and quoted to order. Availability and pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU5136-4GB0","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/3RU5136-4GB0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}