{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY6205-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY6205-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SY6205-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY6205-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY6 series, 2-pole miniature circuit breaker, 0.5 A rated current, D tripping characteristic, 400 V AC, 6 kA breaking capacity per EN 60898, 2 MW units wide.","salesMarkdown":"## Siemens 5SY6205-8CC — 0.5 A D-Curve MCB for High-Inrush Loads The Siemens 5SY6205-8CC is a SENTRON 5SY6 series miniature circuit breaker rated 0.5 A at 400 V AC with a D tripping characteristic. Breaking capacity is 6 kA per EN 60898 (IEC 60898) and 5 kA per UL 1077 / CSA C22.2 No. 235, which covers the standard industrial panel fault-current range for a 0.5 A branch; in a 400 V distribution board with a transformer upstream, this breaker clears a bolted fault up to 6 kA without the arc transferring to the busbar. The 2-pole design occupies 2 MW (36 mm) on the DIN rail, with a depth of 76 mm and an installation depth of 70 mm. ## Terminal Capacity and Environmental Range Terminals accept solid and stranded conductors from 0.75 mm² up to 35 mm² — enough for a 0.5 A circuit where the loop impedance often dictates a larger cross-section than the load current needs; the screw terminals torque to 2.5–3.5 N·m, and combined terminals (top and bottom) allow daisy-chaining without separate distribution blocks. Ambient operating range is -25 °C to +55 °C, with storage from -40 °C to +75 °C; humidity tolerance is 95% at 55 °C, derating to 35% at 75 °C — the breaker is at home in a non-condensing panel in a warm factory, but not in a sealed cabinet with a heat source directly below it.","metaTitle":"Siemens 5SY6205-8CC SENTRON MCB, 0.5 A D-Curve, 2-Pole","metaDescription":"Siemens 5SY6205-8CC SENTRON miniature circuit breaker, 0.5 A rated current, D tripping characteristic, 2-pole, 400 V AC, 6 kA breaking capacity per EN 60898. Current production. Qu","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","Wertebereich":"-25 ... +55 °C","Mounting type":"Quick assembly system","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 ... +75 °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","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","circuit-breaker / Design":"5SY6CC","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":"6 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","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=162426&mlfb=5SY6205-8CC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY6205-8CC/alternatives.json"},"ai":{"faq":[{"question":"What conductor sizes does the 5SY6205-8CC accept?","answer":"Solid and stranded conductors from 0.75 mm² up to 35 mm², with screw terminals torqued to 2.5–3.5 N·m."},{"question":"Will the 5SY6205-8CC drop into a panel specified around the 5SY7140-8CC?","answer":"Both are 2-pole SENTRON MCBs on the same DIN-rail footprint (36 mm wide, 76 mm deep), but the 5SY6205-8CC is a 0.5 A D-curve and the 5SY7140-8CC is a higher-current variant — the physical fit is identical, but the trip rating and curve must match the circuit design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY6205-8CC","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/5SY6205-8CC 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}}