{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4140-7KK11","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4140-7KK11","canonicalUrl":"https://aoctrl.com/siemens/5SY4140-7KK11","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4140-7KK11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4140-7KK11, 1-pole miniature circuit breaker, C-curve, 10 kA (EN 60898-1) / 15 kA (IEC 60947-2), 400 VAC, 60 VDC, 18 mm wide.","salesMarkdown":"## Siemens SENTRON 5SY4140-7KK11 — C-curve MCB for panel protection Its C-curve tripping characteristic means it holds through moderate inrush — typical for motor-starter and contactor coils, small transformers, and capacitor banks — and trips on sustained overloads at 5–10× rated current. The interrupting capacity is 10 kA per EN 60898-1 and 15 kA per IEC 60947-2, giving headroom for most 400 VAC industrial supply points with fault currents under that threshold. At 18 mm wide, it occupies one modular unit on DIN rail — standard for a single-pole MCB — and mounts in any position. Rated per DIN EN 60898-1 for residential and similar installations, and per IEC 60947-2 for industrial application. The overvoltage category is III, degree of pollution 3, and energy limitation class 3 — meaning it limits let-through energy to a defined level for downstream equipment protection. The design is halogen-free and silicon-free, suitable for environments sensitive to corrosive off-gassing (railway, marine, clean manufacturing). The product designation explicitly notes suitability for railway applications. ## Voltage ratings and application range Rated operating voltage is 400 VAC with a maximum of 440 VAC in single-phase or multi-phase operation. For DC circuits, the rated value is 60 V with a maximum of 72 V. Frequency range is 50/60 Hz. The C-curve and 1-pole design make it a direct fit for single-phase final circuits in distribution boards, motor-control centers, and machine-tool panels where the upstream fault level stays within 10 kA (EN) or 15 kA (IEC).","metaTitle":"Siemens 5SY4140-7KK11 SENTRON MCB, 1P C-curve 10kA","metaDescription":"Siemens 5SY4140-7KK11 SENTRON miniature circuit breaker, 1-pole C-curve, 10 kA per EN 60898-1, 15 kA per IEC 60947-2. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Standard":"DIN EN60898-1","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":"60 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","Design Of The Product":"For railway applications","Energy Limitation Class":"3","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"1","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"C","according to EN 60898 rated value":"10 kA","according to IEC 60947-2 rated value":"15 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","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":"72 V","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","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":"10 000","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":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=469944&mlfb=5SY4140-7KK11","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4140-7KK11/alternatives.json"},"ai":{"faq":[{"question":"What are the key breaking capacity ratings for 5SY4140-7KK11?","answer":"The interrupting capacity is 10 kA per EN 60898-1 and 15 kA per IEC 60947-2. For DC circuits per IEC 60947-2, it is also rated 15 kA."},{"question":"Will 5SY4140-7KK11 fit the same panel footprint as the base 5SY4140-7?","answer":"Yes — the 5SY4140-7KK11 shares the same 18 mm width, 76 mm depth, and 90 mm height as the 5SY4140-7 base variant. It drops into the same DIN-rail slot without rewiring or panel modification."},{"question":"Where can I buy 5SY4140-7KK11 and how is it quoted?","answer":"This part is sourced and quoted to order through independent distribution against an RFQ. Availability and current pricing are confirmed at quote time — no stock count or price is published here."},{"question":"What compliance documentation does Siemens provide for 5SY4140-7KK11?","answer":"The MCB is designed to DIN EN 60898-1 and IEC 60947-2, is halogen-free and silicon-free, and carries an IP20 protection class with connected conductors. Standard Siemens declarations for RoHS, REACH, and CE marking apply to current-production SENTRON devices."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4140-7KK11","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/5SY4140-7KK11 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}