{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL4340-7RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL4340-7RC","canonicalUrl":"https://aoctrl.com/siemens/5SL4340-7RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL4340-7RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL4340-7RC, miniature circuit breaker, 3-pole, C-curve, 40 A rated, 10 kA breaking capacity per EN 60898, 415 V AC, 1 MW width.","salesMarkdown":"The Siemens SENTRON 5SL4340-7RC is a 3-pole miniature circuit breaker with a C tripping characteristic, rated 40 A at 415 V AC and a 10 kA breaking capacity per EN 60898. That 10 kA rating means it can safely interrupt a fault current up to 10,000 amps without welding its contacts or failing — the threshold that decides whether this breaker clears a dead short or the upstream device has to step in. Snaps onto a standard 35 mm DIN rail — one modular width unit (18 mm wide) per pole, so this 3-pole unit occupies 18 mm of rail space. Depth is 76 mm, which leaves clearance behind most standard enclosure gland plates. Mounting position is unrestricted; the breaker works in any orientation. Rated for 50/60 Hz supply, overvoltage category III, pollution degree 2 — standard for fixed-installation distribution boards. Halogen-free and silicon-free construction, sealable with a lead seal for tamper-proofing in metered or secured installations.","metaTitle":"Siemens 5SL4340-7RC SENTRON MCB, 3P C-Curve 40A 10kA","metaDescription":"Siemens SENTRON 5SL4340-7RC miniature circuit breaker, 3-pole, C-curve, 40 A, 10 kA breaking capacity per EN 60898. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SL4340-7RC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 415 V 10kA, 3-pole, C, 40 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"3P","Number Of Poles":"3","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Energy Limitation Class":"3","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"1","Tripping Characteristic Class":"C","supply voltage at AC rated value":"415 V","according to EN 60898 rated value":"10 kA","Type Of Voltage Of The Operating Voltage":"AC","with multi-phase operation at AC maximum":"440 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"250 V","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"4.1 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/14bff235354d92c9f23a8ad09209f9ba.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=103815&mlfb=5SL4340-7RC"},"ai":{"faq":[{"question":"Where can I buy 5SL4340-7RC and how do I get a price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing confirmed at quote time."},{"question":"Will 5SL4340-7RC drop into a panel specified around 5SL4363-7 without rewiring?","answer":"No — the 5SL4363-7 is a 3-pole unit that occupies 3 modular widths (54 mm), while the 5SL4340-7RC is a 1-module-width (18 mm) design. The DIN-rail footprint and busbar spacing differ, so the panel would need re-termination or a different busbar arrangement."},{"question":"What is 5SL4340-7RC's listed depth?","answer":"Depth is 76 mm, with an installation depth of 70 mm."},{"question":"What compliance documentation does this brand provide for 5SL4340-7RC?","answer":"The SENTRON series is designed to meet IEC/EN 60898 and IEC 60947-2 standards. Halogen-free and silicon-free construction is confirmed. Specific RoHS/REACH declarations are available from the manufacturer upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL4340-7RC","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/5SL4340-7RC 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}}