{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6303-6CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6303-6CC","canonicalUrl":"https://aoctrl.com/siemens/5SL6303-6CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6303-6CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SL6 series, miniature circuit breaker, 400 V, 6 kA, 3-pole, B characteristic, 3 A.","salesMarkdown":"The Siemens 5SL6303-6CC is a 3-pole miniature circuit breaker rated 400 V with a 6 kA breaking capacity, B-curve trip characteristic, and 3 A rated current. This is the Basic Devices family member — the standard-issue MCB for 3-phase final subcircuits in commercial and light industrial distribution boards. The B-curve (3-5 In) means it's sized for resistive and general-purpose loads where inrush is modest; it's the go-to for lighting, socket outlets, and control transformers, not motor-starting duty. ## Integration Note Snap-on DIN rail mount, 3-pole width (approx. 54 mm). Terminal capacity for 0.75–25 mm² conductor. The 6 kA breaking capacity at 400 V is adequate for most commercial distribution boards where the prospective fault current stays under that threshold — verify your point-of-installation SCCR before committing the BOM line. For a panel OEM, this is a standard 3-module MCB that slots into any 35 mm DIN-rail enclosure alongside RCBOs and contactors.","metaTitle":"Siemens 5SL6303-6CC Miniature Circuit Breaker, 400V 6kA 3-po","metaDescription":"Siemens 5SL6303-6CC miniature circuit breaker, 400V 6kA, 3-pole, B-curve, 3A. Active production. RoHS compliant. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Group Code":"P310","Product Group":"3819","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":"Lead CAS-No. 7439-92-1 > 0,1 % (w / w)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/367ef1e607598c85b7bd96198f985193.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/5SL6303-6CC?tree=CatalogTree","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL6303-6CC/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SL6303-6CC?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or lead-time number is published here."},{"question":"What is the group code and product group for 5SL6303-6CC?","answer":"The group code is P310 and the product group is 3819. These are Siemens internal classification codes used for cataloguing and cross-reference."},{"question":"What compliance documentation does Siemens provide for 5SL6303-6CC?","answer":"RoHS compliant since June 2013. REACH Article 33 disclosure: lead CAS-No. 7439-92-1 above 0.1% w/w. Export control AL: N / ECCN: N."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6303-6CC","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/5SL6303-6CC 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}}