{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7205-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7205-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SY7205-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7205-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7205-8CC miniature circuit breaker, 2-pole, D tripping characteristic, 0.5 A rated current, 400 V AC, 50 kA breaking capacity per IEC 60947-2, 2 MW units.","salesMarkdown":"The Siemens SENTRON 5SY7205-8CC is a 2-pole miniature circuit breaker (MCB) with a D tripping characteristic, rated 0.5 A at 400 V AC. The 50 kA breaking capacity at 400 V (per IEC 60947-2) tells you it can safely interrupt a fault current up to that level without welding contacts or cascading failure upstream; that's a serious interrupting rating for a 0.5 A device, so it's sized for high-fault-capacity panels, not residential subboards. Under UL 1077 and CSA C22.2 No. 235 the breaking capacity is 5 kA — a different standard, not a derating of the IEC figure. If your BOM specifies UL-listed branch circuit protection, that 5 kA figure governs the SCCR contribution; the IEC 50 kA applies where the local code accepts IEC 60947-2 listing. IP20 with connected conductors — that's the usual protected-enclosure rating for a DIN-rail component inside a locked panel. Not for wet or washdown locations without an outer enclosure. Vibration resistance per IEC 60068-2-6 (±1 mm at 5 to 25 Hz, 50 m/s² at 25 to 150 Hz) covers most industrial machinery and conveyor applications. ## Supplementary devices and compliance That means you can add remote trip indication or undervoltage release without replacing the breaker.","metaTitle":"Siemens 5SY7205-8CC SENTRON MCB, 2P D 0.5A, 400V","metaDescription":"Siemens 5SY7205-8CC SENTRON miniature circuit breaker, 2-pole, D-curve, 0.5 A, 400 V AC, 50 kA breaking capacity per IEC 60947-2. 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","Width":"36 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"2P","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","at AC rated value":"400 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Neutral Conductor Switching":"No","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"D","according to IEC 60947-2 rated value":"50 kA","Influence Of The Surrounding Temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","Type Of Voltage Of The Operating Voltage":"AC","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"440 V","at AC according to UL 1077 and CSA C22.2 No.235":"5 kA","vibration resistance according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"1.1 W"}},"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=505430&mlfb=5SY7205-8CC","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY7205-8CC/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY7205-8CC?","answer":"50 kA at 400 V AC per IEC 60947-2, and 5 kA per UL 1077 / CSA C22.2 No. 235. The applicable figure depends on which standard your local code or BOM requires."},{"question":"Will 5SY7205-8CC drop into a panel specified for 5SY7210-7CC?","answer":"Yes — both are 2-pole SENTRON 5SY7 series breakers with the same 36 mm width, 76 mm depth, and DIN-rail mounting. The difference is the current rating (0.5 A vs. the 5SY7210-7CC's rating) and the tripping curve; the mechanical footprint is identical."},{"question":"Where can I buy 5SY7205-8CC and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."},{"question":"What compliance documentation does Siemens provide for 5SY7205-8CC?","answer":"The part carries IEC 60947-2 and UL 1077 / CSA C22.2 No. 235 ratings. It is halogen-free and silicon-free. Full RoHS, REACH, and declaration-of-conformity documents are available from Siemens on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7205-8CC","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/5SY7205-8CC 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}}