{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU5176-5JB1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU5176-5JB1","canonicalUrl":"https://aoctrl.com/siemens/3RU5176-5JB1","factsUrl":"https://aoctrl.com/api/mcp/products/3RU5176-5JB1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, Thermal overload relay, 3RU5176-5JB1, adjustable current response 3.5–5 A, Class 10, size S12, screw terminals, manual/automatic reset.","salesMarkdown":"Its adjustable current response range of 3.5 to 5 A lets you dial in the exact full-load current of the motor it guards — set it to the nameplate FLA and the Class 10 trip curve clears a stalled rotor fast enough to keep the winding insulation intact. The 8 kV surge voltage resistance means it holds up against switching transients common on 400 V line-fed contactor panels. ## Deployment context: panel integration Mounts as a stand-alone overload relay on a DIN rail or screw-fixed to a backplate. The main circuit uses screw terminals; the auxiliary circuit also uses screw terminals. Manual or automatic reset is selectable on the front.","metaTitle":"Siemens 3RU5176-5JB1 SIRIUS Thermal Overload Relay, 3.5–5 A","metaDescription":"Siemens SIRIUS 3RU5176-5JB1 thermal overload relay, adjustable 3.5–5 A, Class 10, for motor protection. Current lifecycle stage. Sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Per Pole":"0 W","lifecycle_stage":"current","During Transport":"-55 ... +80 °C","Product Brand Name":"SIRIUS","Product Designation":"Thermal overload relay","Substance Prohibitance (Date)":"09/03/2013","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"5 A","Relative Humidity During Operation":"0 ... 100 %","Surge Voltage Resistance Rated Value":"8 kV","Number Of Poles For Main Current Circuit":"3","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"3.5 ... 5 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=621474&mlfb=3RU5176-5JB1","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU5176-5JB1/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RU5176-5JB1 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ to receive a firm price and lead time."},{"question":"What is the adjustable current range of 3RU5176-5JB1?","answer":"The adjustable current response value is 3.5 to 5 A, which sets the overload trip point for the motor it protects."},{"question":"What compliance documentation does Siemens provide for 3RU5176-5JB1?","answer":"The evidence includes a substance prohibitance date of 09/03/2013, indicating RoHS/REACH compliance. The part carries the SIRIUS brand and is designed to IEC/UL standards typical for thermal overload relays."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU5176-5JB1","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/3RU5176-5JB1 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}}