{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6440-7RC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6440-7RC","canonicalUrl":"https://aoctrl.com/siemens/5SL6440-7RC","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6440-7RC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6440-7RC, miniature circuit breaker, 4-pole, 40 A, C characteristic, 7.5 kA per EN 60898, 415 VAC.","salesMarkdown":"## What this MCB covers Rated 415 VAC multi-phase (440 VAC max) and 250 VAC single-phase, with a 72 VDC maximum for DC-side applications. The 7.5 kA breaking capacity per EN 60898 is the standard you spec for a residential or light-commercial panelboard — adequate for most utility-transformer fault currents, but not the 10 kA or 25 kA you'd need closer to a large substation. IP20 with conductors connected — expected for a panelboard device, not for wet locations. The 4-MWU footprint (72 mm) occupies four 18 mm module positions — plan your rail fill accordingly. Sealable (padlockable) handle for lockout/tagout.","metaTitle":"Siemens 5SL6440-7RC SENTRON MCB, 40A 4P C-Curve, 7.5kA","metaDescription":"Siemens SENTRON 5SL6440-7RC miniature circuit breaker, 40 A, 4-pole, C characteristic, 7.5 kA breaking capacity per EN 60898 at 415 VAC. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SL6440-7RC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"MCB 40 A 4-pole C characteristic 7.5 kA","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"4P","Number Of Poles":"4","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":"No","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"4","Tripping Characteristic Class":"C","supply voltage at AC rated value":"415 V","according to EN 60898 rated value":"7.5 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":"3.3 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0d39958bdb01b3b38e97409b940d9225.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=227680&mlfb=5SL6440-7RC"},"ai":{"faq":[{"question":"Where can I buy 5SL6440-7RC and get current pricing?","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 commercial offer."},{"question":"Will 5SL6440-7RC drop into a panel specified around 5SL4363-7 without rewiring?","answer":"No — the 5SL4363-7 is a 3-pole, 63 A MCB on a 3-MWU (54 mm) footprint, while the 5SL6440-7RC is a 4-pole, 40 A MCB on a 4-MWU (72 mm) footprint. The pole count, current rating, and width differ; a panel designed for the 3-pole unit would need busbar and rail rework to accept the 4-pole."},{"question":"What compliance documentation does Siemens provide for 5SL6440-7RC?","answer":"The MCB carries a CE marking per the Low Voltage Directive and is designed to EN 60898-1. It is halogen-free and silicon-free. For specific declarations (RoHS, REACH, UL file) request the manufacturer's compliance package with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6440-7RC","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/5SL6440-7RC 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}}