{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5140-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5140-7","canonicalUrl":"https://aoctrl.com/siemens/5SY5140-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5140-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY5140-7, 1-pole miniature circuit breaker, C-curve, 10 kA interrupting capacity per IEC/EN 60898-2 and UL1077, 400 VAC / 220 VDC, 1 MW unit, IP20.","salesMarkdown":"The breaker is listed to both IEC/EN 60898-2 and UL1077, so it qualifies for panels destined for European and North American sites without requalifying the branch protection. ## Panel integration — dimensions and mounting The 5SY5140-7 occupies 1 modular width unit (18 mm) on a DIN rail, with a depth of 76 mm and height of 90 mm. Installation depth is 70 mm, leaving clearance behind the rail for wiring. The quick-assembly fastening system snaps onto the rail without tools and releases with a screwdriver push — standard for SENTRON 5SY series. IP20 rating applies with connected conductors, meaning the breaker is finger-safe once wired but not protected against water ingress — standard for panelboard installation inside a rated enclosure. Degree of pollution 3 and overvoltage category III confirm it is designed for fixed installations where transient overvoltages are controlled by upstream SPDs. Halogen-free and silicon-free construction, which matters for panels installed in clean-room or semiconductor environments where outgassing can contaminate optics or sensitive surfaces. Operating temperature range is -40 °C to 75 °C, with humidity derating above 55 °C (95% RH up to 55 °C, 55% RH up to 70 °C, 35% RH at 75 °C). The breaker is sealable — a lead wire can be threaded through the housing for tamper-evident sealing in metering or critical circuits.","metaTitle":"Siemens 5SY5140-7 SENTRON MCB, 1P C-Curve, 10 kA IEC/UL","metaDescription":"Siemens 5SY5140-7 SENTRON miniature circuit breaker, 1-pole, C-curve, 10 kA breaking capacity per IEC 60898-2 and UL1077. Active production. Sourced to order against RFQ.","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":"5SY5140-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"IEC / EN 60898-2, UL1077","description":"Circuit breaker Universal current 220 V DC 230/400 V AC 10kA, 1-pole, C, 40 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P","Number Of Poles":"1","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 V","at DC rated value":"220 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Energy Limitation Class":"3","Combined Terminal Bottom":"Yes","Suitability For Operation":"universal current","Neutral Conductor Switching":"No","Number Of Modular Width Units":"1","Position Of Power Supply Cord":"AC as required, observe DC polarity","Tripping Characteristic Class":"C","at DC according to EN 60898-2":"10 kA","according to EN 60898 rated value":"10 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage Of The Operating Voltage":"AC/DC","at DC according to IEC 60947-2 rated value":"15 kA","Value Range Of The Supply Voltage Frequency":"50/60 Hz","operating voltage at DC rated value maximum":"250 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Operating Cycles) Typical":"5 000","Product Extension Installable Supplementary Devices":"Yes","supply voltage with single-phase operation at AC rated value":"230 V","power loss [W] for rated value of the current at AC in hot operating state per pole":"3.5 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$25.40","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0680a02f84c7380a384c0d38aea945f1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=7557&mlfb=5SY5140-7"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5140-7","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/5SY5140-7 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}}