{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4403-6CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4403-6CC","canonicalUrl":"https://aoctrl.com/siemens/5SL4403-6CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4403-6CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens Basic Devices, 5SL4403-6CC, miniature circuit breaker, 4-pole, B-curve, 3A, 400V AC, 10kA breaking capacity.","salesMarkdown":"The Siemens 5SL4403-6CC is a 4-pole miniature circuit breaker (MCB) from the Basic Devices family, rated 3A with a B tripping characteristic at 400V AC and a 10kA breaking capacity. The B-curve means it trips magnetically between 3x and 5x rated current (9A to 15A), which suits resistive and light inductive loads like lighting circuits, small transformers, or control power supplies — not high-inrush motor starting, where a C or D curve would be a better fit. The 10kA breaking capacity at 400V means it can safely interrupt a fault current up to 10,000A without welding contacts or cascading failure upstream, which is standard for most commercial and light industrial distribution boards. ## Sourcing posture No minimum above the single-piece unit quantity.","metaTitle":"Siemens 5SL4403-6CC MCB, 4-pole B-curve 3A 400V 10kA","metaDescription":"Siemens 5SL4403-6CC miniature circuit breaker, 4-pole, B characteristic, 3A rated, 400V AC, 10kA breaking capacity. Active production. RoHS compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Group Code":"P310","Product Group":"3822","Product class":"B: return restricted, please contact your Siemens partner/contact","Quantity Unit":"1 Piece","Product Family":"Basic Devices","lifecycle_stage":"current","Packaging Quantity":"1","Export Control Regulations":"AL : N / ECCN : N","Packaging dimensions (L x W x H)":"Not available","Compliance with the substance restrictions according to RoHS directive":"Since: 01-06-13","REACH Art. 33 Duty to inform according to the current list of candidates":"Reach Information"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c82539c2c291b895d9632014e53666a0.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/5SL4403-6CC?tree=CatalogTree","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL4403-6CC/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SL4403-6CC and how do I get a price?","answer":"The 5SL4403-6CC is sourced to order against an RFQ through independent distribution. Submit a request for quote (RFQ) to confirm current availability and pricing — no stock or price figures are published here."},{"question":"What is 5SL4403-6CC's listed group code on this component line?","answer":"The Siemens Group Code for this part is P310. This is an internal Siemens classification used for catalog grouping and may be referenced on your BOM or procurement system."},{"question":"What is 5SL4403-6CC's listed product group (3822) on this component line?","answer":"The Product Group is 3822. Like the Group Code, this is a Siemens internal identifier for product family sorting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4403-6CC","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/5SL4403-6CC 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}}