{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5140-6CC11","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5140-6CC11","canonicalUrl":"https://aoctrl.com/siemens/5SY5140-6CC11","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5140-6CC11","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 5SY5140-6CC11, 1-pole DC miniature circuit breaker, B-curve, 40 A rated current, 10 kA breaking capacity at 220 V DC per IEC 60947-2, designed for railway applications.","salesMarkdown":"## Panel fit and wiring constraints Width is 18 mm — one standard DIN-rail width unit — so it occupies a single slot on the rail. That 76 mm depth is the same as the 5SL3120-6MB peer, so if you're swapping into a panel built for that 5SL series, the envelope matches without re-drilling gland plates or re-routing cable bundles. Tightening torque is 2.5 to 3.5 N·m (22 to 31 lbf·in), which is typical for screw terminals on this class of breaker. Both top and bottom terminals are combined (line and load can land on either side), and the unit is sealable for tamper-proofing in metered or secured installations. Polarity must be observed on the DC supply — the datasheet notes 'Consider polarity' on the power supply connection. The closest functional peer in the SENTRON family is the 5SL3120-6MB. Both are 1-pole, 18 mm wide, 76 mm deep, with B-curve tripping and IP20 touch protection. The critical difference: the 5SL3120-6MB is an AC-only breaker (rated 400 V AC, 4.5 kA per EN 60898), while the 5SY5140-6CC11 is a DC-rated universal-current breaker (220 V DC, 10 kA per IEC 60947-2). If your circuit is DC, the 5SL won't work — its DC breaking capacity is not specified. If your circuit is AC, the 5SY will still function (it's rated for 230/400 V AC as well per the description), but you're paying for the DC rating and railway qualification you may not need. Wire range on the 5SY goes up to 35 mm² solid/stranded; the 5SL tops out at 25 mm². Ambient temperature range is wider on the 5SY (-40 to +70 °C vs -25 to +45 °C). So if you're in a hot cabinet or cold outdoor location, the 5SY is the correct choice regardless of voltage type.","metaTitle":"SENTRON 5SY5140-6CC11 MCB, 1P B 40 A DC, 10 kA, Railway","metaDescription":"SENTRON 5SY5140-6CC11 miniature circuit breaker, 1-pole, B-curve, 40 A DC, 10 kA breaking capacity per IEC 60947-2. Designed for railway applications. Current lifecycle stage. Quot","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"18 mm","title":"5SY5140-6CC11","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","description":"Circuit breaker Universal current 220 V DC 230/400 V AC 10kA, 1-pole, B, 40 A for railway applications","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","During Storage":"-40 ... +75 °C","Number of poles":"1","Type of voltage":"DC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-40 ... +70 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","at DC / rated value":"220 V","Overvoltage category":"III","Combined Terminal Top":"Yes","Design of the product":"For railway applications","Number of width units":"1","Number of poles / Note":"1P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","Combined Terminal Bottom":"Yes","Tripping characteristic class":"B","at DC / rated value / maximum":"250 V","Position / of power supply cord":"Consider polarity","Product feature / Touch protection":"Yes","Influence of the surrounding temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at DC / acc. to IEC 60947-2 / rated value":"10 kA","Tightening torque / with screw-type terminals":"2.5 ... 3.5 N·m","Product function / neutral conductor switching":"No","Tightening torque [lbf·in] / with screw-type terminals":"22 ... 31 lbf·in"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fa456a5488e2e64ce5216ac2cd1603a5.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=154077&mlfb=5SY5140-6CC11"},"ai":{"faq":[{"question":"What is 5SY5140-6CC11's listed depth and wire range?","answer":"Depth is 76 mm, installation depth 70 mm. Solid and stranded conductor range is 0.75 to 35 mm²."},{"question":"Will 5SY5140-6CC11 drop into a panel built for 5SL3120-6MB without rewiring?","answer":"The 76 mm depth, 18 mm width, and 90 mm height are identical to the 5SL3120-6MB, so the mechanical envelope fits. However, the 5SY is a DC-rated breaker with polarity-sensitive terminals, while the 5SL is AC-only. If the circuit is AC, it will function, but you're over-specified. If the circuit is DC, the 5SL cannot be substituted."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5140-6CC11","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/5SY5140-6CC11 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}}