{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4301-8CC11","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4301-8CC11","canonicalUrl":"https://aoctrl.com/siemens/5SY4301-8CC11","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4301-8CC11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4301-8CC11, 3-pole miniature circuit breaker, 1 A, D tripping characteristic, 10 kA at 400 V AC, for railway and industrial applications.","salesMarkdown":"The D curve (typically 10–20× In) handles inrush from small transformers, solenoid valves, or motor starters without nuisance tripping — the right choice when the load has a high starting surge but low steady-state draw. The 5SY4301-8CC11 carries a current-production lifecycle stage, so it remains in active manufacture and standard distribution. No official successor has been issued — the part is the current design. It accepts solid or stranded conductors from 0.75 to 35 mm² at both top and bottom combined terminals, with a tightening torque of 2.5–3.5 N·m. The installation depth is 70 mm, and the overall depth is 76 mm — check panel clearance if back-mounting. Mounting position is any; the device is sealable and provides touch protection. IP20 applies only with connected conductors. Rated for ambient temperatures from -40 to +70 °C and storage from -40 to +75 °C, with humidity limits up to 95% at 55 °C. The design is halogen-free and silicon-free, and it is specifically marked for railway applications. The part carries no neutral-conductor switching function — it is a 3-pole device for 3-phase systems without switched neutral. ## Multi-phase rating and coordination In multi-phase operation the rated voltage rises to 440 V AC, which covers the upper end of standard 400 V networks and allows use in 480 V systems with appropriate phase-to-phase coordination. The D-curve selectivity with downstream 1 A MCBs is straightforward — the 10 kA SCCR at 400 V provides adequate headroom for most final sub-circuits in industrial and railway panels.","metaTitle":"Siemens 5SY4301-8CC11 SENTRON MCB, 3P, 1 A, D-curve, 10 kA","metaDescription":"Siemens 5SY4301-8CC11 SENTRON miniature circuit breaker, 3-pole, 1 A rated current, D tripping characteristic, 10 kA breaking capacity per EN 60898, 400 V AC. Current-production st","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["3-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"54 mm","title":"5SY4301-8CC11","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","description":"Miniature circuit breaker 400 V 10kA, 3-pole, D, 1A for railway applications","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","During Storage":"-40 ... +75 °C","Number of poles":"3","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":"3","Number of poles / Note":"3P","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":"1 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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6bb87d92f46d037923d3ab41e0e1693c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=396510&mlfb=5SY4301-8CC11"},"ai":{"faq":[{"question":"What is 5SY4301-8CC11's listed depth (76 mm) on this component line?","answer":"The overall depth is 76 mm, with an installation depth of 70 mm. This is the dimension from the DIN-rail mounting surface to the front of the breaker."},{"question":"What is 5SY4301-8CC11's listed solid (0.75... 35 mm²) on this component line?","answer":"The solid conductor range is 0.75 to 35 mm². Stranded conductors are also accepted in the same range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4301-8CC11","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/5SY4301-8CC11 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}}