{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4203-7CC11","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4203-7CC11","canonicalUrl":"https://aoctrl.com/siemens/5SY4203-7CC11","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4203-7CC11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4203-7CC11, 2-pole miniature circuit breaker, C characteristic, 3 A rated current, 10 kA breaking capacity per EN 60898 at 400 V AC, for railway and industrial applications.","salesMarkdown":"The 5SY4203-7CC11 is a current-production SENTRON miniature circuit breaker (MCB) — 2-pole, C-curve, rated 3 A at 400 V AC, with a 10 kA breaking capacity tested to EN 60898. Rated for 50/60 Hz, overvoltage category III, and energy limiting class 3, which tells you it limits let-through energy well enough to protect downstream equipment in a distribution board. ## Termination and wiring Sealable, touch-protected, halogen-free and silicon-free — relevant for environments where outgassing contaminates optics or contacts. No neutral switching (2-pole, both poles are phase).","metaTitle":"Siemens 5SY4203-7CC11 SENTRON MCB, 2P, C-curve, 3 A, 10 kA","metaDescription":"Siemens 5SY4203-7CC11 SENTRON miniature circuit breaker, 2-pole, C tripping characteristic, 3 A rated current, 10 kA breaking capacity per EN 60898 at 400 V AC. Current-production,","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"36 mm","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","During Storage":"-40 ... +75 °C","Number of poles":"2","Type of voltage":"AC","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 AC / rated value":"400 V","Overvoltage category":"III","Combined Terminal Top":"Yes","Design of the product":"For railway applications","Energy limiting class":"3","Number of width units":"2","Number of poles / Note":"2P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","Combined Terminal Bottom":"Yes","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"3 A","Tripping characteristic class":"C","at DC / rated value / maximum":"72 V","acc. to EN 60898 / rated value":"10 kA","Position / of power supply cord":"Any","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","Tightening torque / with screw-type terminals":"2.5 ... 3.5 N·m","Product function / neutral conductor switching":"No","with multi-phase operation / at AC / rated value":"440 V","with single-phase operation / at AC / rated value":"440 V","Mechanical service life (switching cycles) / typical":"10 000","Tightening torque [lbf·in] / with screw-type terminals":"22 ... 31 lbf·in"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0339c0a813afa1015660c4db3c726395.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=340034&mlfb=5SY4203-7CC11","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4203-7CC11/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4203-7CC11?","answer":"10 kA rated breaking capacity per EN 60898 at 400 V AC, overvoltage category III, energy limiting class 3."},{"question":"What conductor sizes does the 5SY4203-7CC11 accept?","answer":"Solid and stranded conductors from 0.75 to 35 mm², with screw terminals torqued to 2.5–3.5 N·m."},{"question":"Where can I buy 5SY4203-7CC11 and how is it quoted?","answer":"Sourced and quoted to order through independent distribution against an RFQ. Availability and current pricing are confirmed at quote time — no stock figures or lead-time numbers published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4203-7CC11","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/5SY4203-7CC11 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}}