{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4205-8CC11","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4205-8CC11","canonicalUrl":"https://aoctrl.com/siemens/5SY4205-8CC11","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4205-8CC11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4205-8CC11, 2-pole miniature circuit breaker, D tripping characteristic, 0.5 A rated current, 10 kA breaking capacity per EN 60898, 400 V AC, 72 V DC max, IP20 with conductors, railway design.","salesMarkdown":"## SENTRON 5SY4205-8CC11 — 2-pole D-curve MCB, 0.5 A, railway-rated The Siemens SENTRON 5SY4205-8CC11 is a 2-pole miniature circuit breaker with D tripping characteristic, rated 0.5 A at 400 V AC. Rated for 400 V AC line-to-line and 72 V DC maximum, this 2P unit switches both poles simultaneously — no neutral switching. The multi-phase rating extends to 440 V AC, covering 400 V systems with tolerance. IP20 applies only with connected conductors, so the busbar stabs and terminals are protected once wired. The D characteristic defines magnetic trip between 10× and 20× In (5 A to 10 A for this 0.5 A unit). That delay lets through the magnetizing inrush of a small transformer or the locked-rotor spike of a fractional-horsepower motor without opening. ## Termination and panel integration Width is 36 mm (2 width units,), occupying two 18 mm module spaces on the rail.","metaTitle":"Siemens 5SY4205-8CC11 SENTRON MCB, 2P D 0.5 A, 10 kA","metaDescription":"Siemens SENTRON 5SY4205-8CC11 miniature circuit breaker, 2-pole, D-curve, 0.5 A, 10 kA breaking capacity per EN 60898. Railway-rated design. Available to order; confirm current pri","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","title":"5SY4205-8CC11","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","description":"Circuit breaker 400 V 10kA, 2-pole, D, 0.5 A for railway applications","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":"0.5 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/fce59aea50afc945740c2120bcc797e7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=719126&mlfb=5SY4205-8CC11"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY4205-8CC11?","answer":"The breaking capacity is 10 kA at 400 V AC per EN 60898, which is the standard for miniature circuit breakers in final circuits."},{"question":"What conductor sizes does the 5SY4205-8CC11 accept?","answer":"The screw terminals accept solid or stranded conductors from 0.75 mm² up to 35 mm²."},{"question":"Is 5SY4205-8CC11 suitable for DC circuits?","answer":"Yes, it is rated for DC operation up to 72 V maximum. For DC applications, verify the polarity and that the breaking capacity is adequate for the DC fault current."},{"question":"Where can I buy 5SY4205-8CC11 and what is the lead time?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm lead time and price."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4205-8CC11","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/5SY4205-8CC11 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}}