{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL7240-7RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL7240-7RC","canonicalUrl":"https://aoctrl.com/siemens/5SL7240-7RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL7240-7RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SL7240-7RC, 2-pole miniature circuit breaker, 415 V, 15 kA breaking capacity, C-curve, 40 A.","salesMarkdown":"The 5SL7240-7RC: The 15 kA breaking capacity at 415 V means this MCB can safely interrupt a fault current up to that level without welding its contacts or failing catastrophically — that's the rating you match against the prospective short-circuit current (PSCC) at the panel's supply point. The C-curve (magnetic trip between 5 and 10 times In) is the standard for moderate inrush loads like small motors, transformers, and lighting banks; it holds through the starting surge without nuisance tripping on a 40 A circuit. Two-pole construction switches both phase conductors simultaneously, which you need for single-phase 240 V line-to-line or a 415 V two-phase load. Standard DIN-rail mount, 2 modules wide. Wires up clean with a screw-clamp terminal accepting 1–25 mm² conductor. The 40 A rating suits it for a sub-feed or a larger branch circuit in a distribution board — think a small pump, a compressor, or a lighting sub-panel where the C-curve keeps it from popping on the inrush.","metaTitle":"Siemens 5SL7240-7RC MCB, 415 V 2-pole 15 kA C 40","metaDescription":"Siemens 5SL7240-7RC miniature circuit breaker, 415 V 2-pole, 15 kA breaking capacity, C-curve 40 A. Current production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"title":"5SL7240-7RC","description":"Miniature circuit breaker 415 V 2-pole 15 kA C 40","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/69a536c576957cf821e3c854e98d9292.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=646360&mlfb=5SL7240-7RC"},"ai":{"faq":[{"question":"What is the 5SL7240-7RC used for?","answer":"It's a 2-pole miniature circuit breaker with a C-curve trip characteristic at 40 A, rated for 415 V with a 15 kA breaking capacity. Use it to protect branch circuits with moderate inrush loads like small motors, transformers, or lighting banks in distribution panels."},{"question":"Where can I buy the 5SL7240-7RC?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the breaking capacity of the 5SL7240-7RC?","answer":"15 kA at 415 V. That is the maximum fault current it can safely interrupt without damage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL7240-7RC","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/5SL7240-7RC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}