{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4540-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4540-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SL4540-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4540-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SL series, miniature circuit breaker, 230 V, 10 kA interrupting capacity, 1+N-pole, D characteristic, 40 A, order code 5SL4540-8CC.","salesMarkdown":"## What the ratings mean for fit The Siemens 5SL4540-8CC is a 1+N-pole miniature circuit breaker rated 40 A with a D tripping characteristic, per the description. The D curve means it tolerates inrush currents 10–20 times the rated current before tripping magnetically — sized for motor or transformer loads where the starting surge would nuisance-trip a B or C curve breaker. The 10 kA interrupting capacity at 230 V is the maximum fault current it can safely clear; verify the prospective short-circuit current at the installation point stays under that figure for coordination. ## Compliance documentation RoHS compliant since 01 June 2013. REACH Article 33 declaration notes lead (CAS 7439-92-1) above 0.1% w/w in the candidate list. Export control classifications: AL N / ECCN N — no license required for most destinations.","metaTitle":"Siemens 5SL4540-8CC Miniature Circuit Breaker, 40 A, D Curve","metaDescription":"Siemens 5SL4540-8CC miniature circuit breaker, 230 V, 10 kA, 1+N-pole, D characteristic, 40 A. Active production. RoHS compliant since 2013. 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":"3824","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/c330b4b75b84f57229a78a9f2d5dd1e6.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/5SL4540-8CC?tree=CatalogTree","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SL4540-8CC/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SL4540-8CC and how do I get a price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the D curve rating on this breaker?","answer":"The D characteristic means the magnetic trip operates at 10–20 times the 40 A rated current, making it suitable for loads with high inrush such as motors, transformers, or welding equipment."},{"question":"What compliance documentation does Siemens provide for 5SL4540-8CC?","answer":"RoHS compliant since 01 June 2013. REACH Article 33 declares lead (CAS 7439-92-1) above 0.1% w/w. Export control is AL N / ECCN N."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4540-8CC","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/5SL4540-8CC 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}}