{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7203-8CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7203-8CC","canonicalUrl":"https://aoctrl.com/siemens/5SY7203-8CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7203-8CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7203-8CC miniature circuit breaker, D characteristic, 2-pole, 3 A rated, 30 kA breaking capacity per IEC 60947-2, 72 V DC max.","salesMarkdown":"The 30 kA breaking capacity at 400 V AC per IEC 60947-2 tells you this breaker can safely interrupt a fault current up to 30,000 amps without welding its contacts or blowing apart, which is important for industrial panels fed by a transformer with stiff secondary capacity. It also carries a 5 kA interrupting rating per UL 1077 and CSA C22.2 No. 235, so it's accepted in North American control-panel applications as a supplementary protector. The 2-pole unit (2P) switches both lines on a single-phase circuit or one leg of a three-phase system; it doesn't switch the neutral. Rated voltage is 400 V AC between phases, and it handles up to 72 V DC maximum, so it can also serve in DC control circuits within that limit. The terminals accept combined (box lug / pin) conductors top and bottom, and the unit is sealable for applications requiring tamper-evident locking.","metaTitle":"Siemens 5SY7203-8CC SENTRON MCB, 3 A D-curve, 2-pole, 30 kA","metaDescription":"Siemens 5SY7203-8CC SENTRON miniature circuit breaker, 3 A rated, D tripping characteristic, 2-pole, 30 kA breaking capacity per IEC 60947-2. Current production, available 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":"5SY7203-8CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"50/60 Hz","description":"Miniature circuit breaker 400 V 15kA, 2-pole, D, 3 A","Halogen-Free":"Yes","Silicon-Free":"Yes","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","Degree of pollution":"3","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":"5SY7CC","Suitability for operation":"Mechanical engineering / industry","Tripping characteristic class":"D","at DC / rated value / maximum":"72 V","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"30 kA","Product feature / Touch protection":"Yes","Operating current / at AC / rated value":"3 A","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","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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/14bfe7de58c3328f0586611b4be43985.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=36303&mlfb=5SY7203-8CC"},"ai":{"faq":[{"question":"Where can I buy 5SY7203-8CC and get a price?","answer":"We source and quote this breaker to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an RFQ through the page."},{"question":"What is the difference between 5SY7203-8CC and 5SY6602-8?","answer":"The 5SY6602-8 is a 2 A, 2-pole, D-curve MCB from the same SENTRON family but with a lower 10 kA breaking capacity per IEC 60947-2 versus this 5SY7203-8CC's 30 kA. Both share the same 36 mm width and DIN-rail footprint, so the 5SY7203-8CC can drop into a panel designed for the 5SY6602-8 without rewiring — just verify the higher fault current rating is acceptable for the installation's available fault current."},{"question":"What compliance documentation does the 5SY7203-8CC carry?","answer":"The breaker is rated per IEC 60947-2 (30 kA) and UL 1077 / CSA C22.2 No. 235 (5 kA). It's halogen-free and silicon-free. Specific RoHS/REACH declarations are available from Siemens upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7203-8CC","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/5SY7203-8CC 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}}