{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4204-8CC11","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4204-8CC11","canonicalUrl":"https://aoctrl.com/siemens/5SY4204-8CC11","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4204-8CC11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4204-8CC11 miniature circuit breaker, 2-pole, D tripping characteristic, 4 A rated current, 10 kA breaking capacity at 400 V AC, 2 width units (36 mm).","salesMarkdown":"## What this MCB is and what the D-curve means for your line The Siemens 5SY4204-8CC11 is a 2-pole miniature circuit breaker from the SENTRON series, rated 4 A with a D tripping characteristic and a 10 kA breaking capacity per EN 60898 at 400 V AC. The D-curve means it tolerates high inrush currents — typically 10 to 20 times the rated current for short durations — so it's sized for loads with a heavy starting surge like small motors, transformers, or solenoid banks where a B- or C-curve would nuisance-trip on startup. At 4 A, think a fractional-horsepower motor or a control transformer feeding a small panel; the 10 kA SCCR tells you it safely interrupts faults up to that level without cascading upstream, which is the standard for most industrial distribution boards. ## Railway-rated build and panel fit This breaker is designed for railway applications, handling ambient temperatures from -40 to +70 °C and humidity up to 95% at 55 °C. It snaps onto a DIN rail, takes 2 width units (36 mm), and has a 76 mm depth plus 70 mm installation depth.","metaTitle":"Siemens 5SY4204-8CC11 SENTRON MCB, 2P D 4A 10kA","metaDescription":"Siemens 5SY4204-8CC11 SENTRON miniature circuit breaker, 2-pole, D-curve, 4 A, 10 kA breaking capacity per EN 60898 at 400 V AC. Current production. Quoted to order.","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","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":"4 A","Tripping characteristic class":"D","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/25d7a91d55720ff83a8b8a3b4a825667.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=289594&mlfb=5SY4204-8CC11","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4204-8CC11/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to the 5SY4204-8CC11?","answer":"The 5SY6602-8 is a peer from the same SENTRON family, but it belongs to a different series with potentially different breaking capacity and footprint. The 5SY4204-8CC11 is the active railway-rated variant; verify the 5SY6602-8's ratings and dimensions before substituting it into a panel designed for this order code."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4204-8CC11","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/5SY4204-8CC11 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}}