{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2120-1JA24-0AP6","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2120-1JA24-0AP6","canonicalUrl":"https://aoctrl.com/siemens/3RA2120-1JA24-0AP6","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2120-1JA24-0AP6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RA2120-1JA24-0AP6 non-fused motor starter, Size S0, direct starter, Class 10 thermal bimetallic overload relay, 690 V AC-3 max, snap-on DIN rail.","salesMarkdown":"## What this SIRIUS starter delivers The 3RA2120-1JA24-0AP6 is a Siemens SIRIUS non-fused motor starter — a direct starter in Size S0, meaning the contactor and overload relay are pre-assembled and wired as a single unit for a motor branch circuit. It ships with the 3RT2024-1AP60 contactor and the 3RA2921-1AA00 link module already matched, so you bolt it in and land your motor leads. The thermal bimetallic overload release gives you Class 10 trip protection — fast enough to protect a standard squirrel-cage rotor on start-up without nuisance tripping. ## Mounting and panel fit Mounting position is vertical only. The footprint is 45 mm wide by 193.1 mm tall by 97.1 mm deep — that 45 mm width is a single modular unit on the rail, so it fits a standard S0-size cutout in a panel layout. Clearance spaces: 30 mm upwards, 10 mm forwards, 10 mm downwards, 9 mm at the side, and 0 mm backwards. That zero-clearance rear face means it can sit flush against a backplate or busbar, saving depth in a tight enclosure. We source it through authorized industrial distribution channels.","metaTitle":"Siemens 3RA2120-1JA24-0AP6 SIRIUS Motor Starter, Size S0","metaDescription":"Siemens 3RA2120-1JA24-0AP6 SIRIUS non-fused motor starter, Size S0, Class 10 thermal overload, 690 V max. Direct starter, snap-on DIN rail. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Starters"],"specifications":{"Depth":"97.1 mm","Width":"45 mm","Height":"193.1 mm","Trip Class":"CLASS 10","Product Status":"Active"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/525067b9a57928ce4565eee220f99218.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=364744&mlfb=3RA2120-1JA24-0AP6"},"ai":{"faq":[{"question":"What is the trip class of the overload on the 3RA2120-1JA24-0AP6?","answer":"Class 10."},{"question":"What contactor and link module come with this motor starter?","answer":"It ships with the 3RT2024-1AP60 contactor and the 3RA2921-1AA00 link module already assembled. You do not need to order them separately — the starter is a single order code with the pair integrated."},{"question":"Can I screw-mount this starter instead of using DIN rail?","answer":"Yes. The mounting position must be vertical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2120-1JA24-0AP6","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/3RA2120-1JA24-0AP6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}