{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6406-6BB","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6406-6BB","canonicalUrl":"https://aoctrl.com/siemens/5SL6406-6BB","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6406-6BB","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SL6 series, miniature circuit breaker, 400 V, 6 kA, 4-pole, B-curve, 6 A, Italy version.","salesMarkdown":"The Siemens 5SL6406-6BB is a 4-pole miniature circuit breaker rated 400 V with a 6 kA breaking capacity, B-curve trip characteristic, and 6 A rated current, in the Italy version of the 5SL6 series. The B-curve trips between 3 and 5 times rated current, so this 6 A breaker clears overloads from 18 A to 30 A — typical for resistive and general-purpose loads where moderate inrush is expected, not motor starting or transformer primaries. ## Panel integration The 4-pole body occupies four modular 18 mm width units, so plan for 72 mm of rail space plus finger-duct clearance on the line and load sides.","metaTitle":"5SL6406-6BB Siemens MCB, 400V 6kA 4P B 6A, Italy","metaDescription":"Siemens 5SL6406-6BB miniature circuit breaker, 400V, 6kA breaking capacity, 4-pole, B-curve, 6A, Italy version. Current lifecycle. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/30ebaf91390ce41344ed22b053eec81a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=172103&mlfb=5SL6406-6BB","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL6406-6BB/alternatives.json"},"ai":{"faq":[{"question":"What is 5SL6406-6BB's breaking capacity and voltage rating?","answer":"It is rated 400 V with a 6 kA breaking capacity per IEC 60898, meaning it can safely interrupt fault currents up to 6,000 A at 400 V without welding the contacts or damaging the enclosure."},{"question":"Where can I buy 5SL6406-6BB?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for current pricing and availability — quotes are confirmed at time of inquiry."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6406-6BB","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/5SL6406-6BB 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}}