{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY5205-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY5205-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY5205-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY5205-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY5205-7CC, 2-pole DC miniature circuit breaker, 440 V DC, 10 kA interrupting capacity per IEC 60947-2, C characteristic, 0.5 A rated current.","salesMarkdown":"## DC-rated MCB for 440 V photovoltaic and industrial DC bus circuits The Siemens SENTRON 5SY5205-7CC is a 2-pole DC miniature circuit breaker rated at 440 V DC with a 10 kA interrupting capacity per IEC 60947-2 and a C tripping characteristic at 0.5 A. Polarity matters on the DC side: the supply cord position must respect polarity markings on the device. The 2-pole (2P) configuration switches both lines, so it fully isolates the load. Compared to the AC-rated sibling 5SY7206-7CC (400 V AC, 30 kA per IEC 60947-2), this DC variant trades higher AC interrupting capacity for the ability to break DC arcs at elevated voltage — a fundamentally different arc-extinction challenge. ## Panel fit and environmental tolerance Mounting position is unrestricted. Ambient range spans -40 °C to +75 °C, with humidity derating above 55 °C — max 95% RH at 55 °C, dropping to 35% at 75 °C. IP20 with connected conductors; the touch-protection feature (finger-safe terminals) is standard. Sealable design allows lockout/tagout. Halogen-free and silicon-free construction avoids corrosion risk in sealed enclosures.","metaTitle":"Siemens 5SY5205-7CC SENTRON MCB, 2P DC 440V 10kA C-0.5A","metaDescription":"Siemens SENTRON 5SY5205-7CC miniature circuit breaker, 2-pole, 440 V DC, 10 kA interrupting capacity, C characteristic, 0.5 A. Active 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","title":"5SY5205-7CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit-breaker 440 V DC 10kA, 2-pole, C, 0.5 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"2","Type Of Voltage":"DC","lifecycle_stage":"current","Fastening Method":"Quick assembly system","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","acc. to IEC 81346-2":"F","at DC / rated value":"440 V","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Design Of The Product":"Machine manufacture / industry","Number Of Poles / Note":"2P","acc. to DIN EN 61346-2":"F","Combined Terminal Bottom":"Yes","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","Position / Of Power Supply Cord":"Consider polarity","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 DC / acc. to IEC 60947-2 / rated value":"10 kA","vibration resistance / acc. to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","Product Function / Neutral Conductor Switching":"No","operating voltage / at DC / rated value / maximum":"500 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c905a9674b110788166481b587e11370.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=42151&mlfb=5SY5205-7CC"},"ai":{"faq":[{"question":"What is the closest functional second-source to 5SY5205-7CC?","answer":"The 5SY7206-7CC is a 2-pole AC-only (400 V) MCB with a 30 kA interrupting capacity and C characteristic — not a direct DC substitute. The 5SY5250-7 offers higher DC interrupting capacity (15 kA) but at a higher current rating. Neither is a drop-in replacement for the 0.5 A DC-rated 5SY5205-7CC."},{"question":"Will 5SY5205-7CC drop into a panel specified around 5SY7206-7CC?","answer":"Physically yes — both share the same 36 mm width, 76 mm depth, 90 mm height, and DIN-rail quick-assembly mounting. Electrically no: the 5SY7206-7CC is AC-only (400 V, 30 kA), while this part is DC-rated (440 V, 10 kA). Rewiring and coordination study required."},{"question":"What compliance documentation does Siemens provide for 5SY5205-7CC?","answer":"The part carries IEC 60947-2 DC interrupting rating and is designed for pollution degree 3, overvoltage category III. It is halogen-free and silicon-free. Standard Siemens declarations of conformity (CE/UKCA) and RoHS/REACH documentation are available upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY5205-7CC","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/5SY5205-7CC 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}}