{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4403-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4403-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SL4403-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4403-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4 series, miniature circuit breaker (MCB), 400 V AC, 10 kA breaking capacity, 4-pole, C characteristic, 3 A rated current.","salesMarkdown":"The Siemens 5SL4403-7CC is a 4-pole miniature circuit breaker from the SENTRON 5SL4 family, rated at 3 A with a C-trip characteristic and a 10 kA breaking capacity at 400 V. The C-curve means it trips between 5 and 10 times rated current — standard for protecting inductive loads like motor circuits, contactor coils, and small transformers where inrush is moderate. The 10 kA interrupting rating at 400 V AC is the fault current it can safely clear without welding contacts or cascading damage upstream; that's the figure a panel designer checks against the prospective short-circuit current at the distribution board. This breaker snaps onto a standard 35 mm DIN rail in the enclosure. Four poles in a single module width (4 MW) means it occupies the same rail space as four single-pole breakers ganged together, but with a common trip mechanism — all poles open simultaneously on a fault, which matters for three-phase loads where single-phasing must be avoided. ## Sourcing This MCB is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — the active lifecycle means there is no last-time-buy window to chase, and no risk of a sudden EOL on a BOM line that uses this code.","metaTitle":"Siemens 5SL4403-7CC Miniature Circuit Breaker 400V 10kA 4P C","metaDescription":"Siemens 5SL4403-7CC miniature circuit breaker, 400V 10kA, 4-pole, C-curve, 3A. Active production. RoHS compliant since 2013. Available 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":"3823","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/5bee6180be613bda5b143837600ebe53.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/5SL4403-7CC?tree=CatalogTree","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL4403-7CC/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity and voltage rating of 5SL4403-7CC?","answer":"It is rated for 10 kA breaking capacity at 400 V AC, 4-pole, C-curve, 3 A. The 10 kA figure is the maximum fault current the breaker can safely interrupt at that voltage."},{"question":"Where can I buy 5SL4403-7CC?","answer":"The part is available to order through independent distribution. Submit an RFQ for current pricing and availability — the active lifecycle means it is a standard stock item, not a special-order or obsolete line."},{"question":"What compliance documentation does Siemens provide for 5SL4403-7CC?","answer":"RoHS compliance is confirmed since June 2013. REACH Article 33 candidate-list information is available from Siemens on request. The part carries no export restrictions (AL: N, ECCN: N)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4403-7CC","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/5SL4403-7CC 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}}