{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SJ6120-6RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SJ6120-6RC","canonicalUrl":"https://aoctrl.com/siemens/5SJ6120-6RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SJ6120-6RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SJ6120-6RC, MCB Retail line, 1-pole, 6kA breaking capacity, 20A B-characteristic.","salesMarkdown":"The Siemens 5SJ6120-6RC is a 1-pole miniature circuit breaker from the Retail line, rated 20A with a B tripping characteristic and a 6kA breaking capacity. This is the part that sits on the DIN rail in a distribution board, sized for final subcircuit protection — lighting, general-purpose sockets, small resistive loads where the B-curve's magnetic trip between 3 and 5 times rated current keeps nuisance trips off the line on mild inrush.","metaTitle":"Siemens 5SJ6120-6RC MCB, 1p 6kA 20A B Curve","metaDescription":"Siemens 5SJ6120-6RC MCB, 1-pole, 6kA breaking capacity, 20A B-characteristic. Current production. Sourced to order; confirm pricing and availability via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"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=1423726&mlfb=5SJ6120-6RC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SJ6120-6RC/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity and curve of the 5SJ6120-6RC?","answer":"It is a 1-pole MCB rated 20A with a B characteristic and 6kA breaking capacity — suited for residential and light commercial final circuits where the B-curve handles resistive and small inductive loads without tripping on normal inrush."},{"question":"Where can I buy the 5SJ6120-6RC?","answer":"This part is sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed when you request a quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SJ6120-6RC","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/5SJ6120-6RC 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}}