{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB1036-2UB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB1036-2UB0","canonicalUrl":"https://aoctrl.com/siemens/3RB1036-2UB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RB1036-2UB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RB1036-2UB0 solid-state overload relay, 15...50 A, class 20, screw connection, size S2, manual-automatic reset.","salesMarkdown":"The Siemens 3RB1036-2UB0 is a solid-state overload relay in the SIRIUS family, rated 15...50 A with class 20 trip characteristic. It mounts directly onto a contactor of size S2, using screw terminals for the power and control wiring. The manual-automatic reset selector gives the commissioning engineer a choice: manual reset for attended installations where a fault must be acknowledged, or automatic reset for remote or unmanned sites where the motor restarts after the overload cools. The 15...50 A range covers a wide band of motor FLA values, but the class 20 trip curve is the key selection parameter. Class 20 means the relay will trip within 20 seconds at 600% of the set current — standard for general-purpose induction motors driving pumps, fans, and conveyors where moderate start-up times are expected. If the motor drives a high-inertia load with a long acceleration ramp, class 30 might be needed; for short-stall protection on a crusher, class 10 is tighter. The size S2 mounting footprint matches Siemens 3RT2 contactors in the same frame size, so the assembly clips together without additional hardware.","metaTitle":"Siemens 3RB1036-2UB0 Solid-State Overload Relay, 15-50A, Cla","metaDescription":"Siemens 3RB1036-2UB0 solid-state overload relay, 15-50A, class 20 protection, mounts onto contactor size S2. Current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"lifecycle_stage":"current"}},"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=170789&mlfb=3RB1036-2UB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RB1036-2UB0/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for the 3RB1036-2UB0?","answer":"It is a solid-state overload relay rated 15...50 A with a class 20 trip characteristic, size S2 mounting, screw connection, and manual-automatic reset."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB1036-2UB0","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/3RB1036-2UB0 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}}