{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6040-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6040-7","canonicalUrl":"https://aoctrl.com/siemens/5SL6040-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6040-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6040-7 miniature circuit breaker, 40 A, C-curve, 1P+N, 6 kA breaking capacity (IEC/EN60898-1), DIN rail mount, 18 mm width.","salesMarkdown":"The Siemens 5SL6040-7 is a SENTRON miniature circuit breaker, rated 40 A with a C tripping characteristic, 1P+N poles, and a 6 kA breaking capacity certified to IEC/EN60898-1. It snaps onto a DIN rail, takes up one modular width (18 mm), and is designed for residential and infrastructure branch-circuit protection. The 40 A rating at 30 °C is the headline number, but out here in the grease you need to watch the derating curve: at 40 °C ambient it drops to 38.08 A, and at 60 °C it's down to 33.9 A. For a residential or light commercial panel with typical fault levels under 6 kA, this holds up fine. It's a 1P+N design with neutral switching, meaning both line and neutral are broken when it trips — good for isolating the circuit during service. The unit is sealable and halogen-free, which matters if you're specifying for a panel that needs low-smoke, zero-halogen materials. ## Physical fit and mounting Width is 18 mm — one modular unit — so it takes up one slot on a standard DIN rail. Height 90 mm.","metaTitle":"Siemens 5SL6040-7 SENTRON MCB, 40 A C-Curve, 1P+N, 6 kA","metaDescription":"Siemens SENTRON 5SL6040-7 miniature circuit breaker, 40 A rated, C tripping characteristic, 1P+N, 6 kA breaking capacity per IEC/EN60898-1. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SL6040-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC/EN60898-1, GB/T10963.1","description":"CIRCUIT BREAKER 230V 6KA, 1+N-POLE/1MW C40","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P+N","lifecycle_stage":"current","Fastening Method":"DIN rail","Mounting Position":"any","at AC rated value":"40 A","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","Combined Terminal Top":"No","Design Of The Product":"Miniature circuit breaker compact","at 30 °C rated value":"40 A","at 40 °C rated value":"38.08 A","at 45 °C rated value":"37.08 A","at 50 °C rated value":"36.05 A","at 55 °C rated value":"34.99 A","at 60 °C rated value":"33.9 A","Energy Limitation Class":"3","according to EN 61346-2":"F","Combined Terminal Bottom":"No","according to IEC 81346-2":"F","Suitability For Operation":"Residential buildings/infrastructure","Neutral Conductor Switching":"Yes","Number Of Modular Width Units":"1","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","according to EN 60898 rated value":"6 kA","Ambient Temperature During Operation":"-25...45°C: max. 85%rF, 45 60°C: max. 43%rF","Type Of Voltage Of The Operating Voltage":"AC","insulation voltage (Ui) at AC rated value":"250 V","with single-phase operation at AC maximum":"250 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","vibration resistance according to IEC 60068-2-6":"Yes","Mechanical Service Life (Operating Cycles) Typical":"4 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"3.8 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9aa3f093430f9cf5470f459a4b1d880b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1364802&mlfb=5SL6040-7"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SL6040-7?","answer":"It has a 6 kA rated breaking capacity per IEC/EN60898-1. That's the maximum prospective fault current it can safely interrupt at its terminals."},{"question":"Will the 5SL6040-7 drop into a panel specified around the 5SL6016-7?","answer":"Yes — both are 1P+N, C-curve SENTRON MCBs on an 18 mm DIN-rail footprint. The only difference is the current rating: 40 A for the 5SL6040-7 versus 16 A for the 5SL6016-7. Same physical envelope, same terminal layout, same mounting. No rewiring needed if the branch circuit is sized for 40 A."},{"question":"Where can I buy the 5SL6040-7 and how is it quoted?","answer":"The 5SL6040-7 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6040-7","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/5SL6040-7 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}}