{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7203-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7203-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY7203-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7203-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7203-7CC miniature circuit breaker, 2-pole, C-curve, 3 A rated, 30 kA breaking capacity per IEC 60947-2, halogen-free and silicon-free.","salesMarkdown":"The Siemens SENTRON 5SY7203-7CC is a 2-pole miniature circuit breaker (MCB) with a C tripping characteristic, rated 3 A at AC and 50/60 Hz. Rated current derates with ambient temperature: 3 A at 35 °C, 2.84 A at 40 °C, 2.75 A at 45 °C, 2.66 A at 50 °C, and 2.56 A at 55 °C. For a panel running at 40 °C ambient, expect 2.84 A continuous — factor that into load planning. Halogen-free and silicon-free construction makes this MCB suitable for cleanroom and semiconductor-fab environments where outgassing or particle contamination from standard plastics is unacceptable. The materials are particle-neutral by design. Installation depth is 70 mm; total depth 76 mm. Fastens via quick assembly system — snaps onto the rail without tools. Any mounting position is permitted, and the power supply cord can enter from any side. Combined terminal at top and bottom accepts conductors with touch protection (IP20 with connected conductors). Sealable design allows tamper-evident locking for metering or critical circuits. Breaking capacity rated 30 kA per IEC 60947-2 and 5 kA per UL 1077 / CSA C22.2 No.235 — covers both IEC and North American installations. Vibration resistance tested per IEC 60068-2-6: ±1 mm at 5 to 25 Hz, 50 m/s² at 25 to 150 Hz.","metaTitle":"Siemens 5SY7203-7CC SENTRON MCB, 3 A, C Curve, 2-Pole, 30 kA","metaDescription":"Siemens 5SY7203-7CC SENTRON miniature circuit breaker, 3 A rated, C tripping characteristic, 2-pole, 30 kA breaking capacity per IEC 60947-2. Halogen-free, silicon-free, sealable.","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":"5SY7203-7CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 15kA, 2-pole, C, 3 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"2","Type Of Voltage":"AC","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 AC / rated value":"3 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Number Of Poles / Note":"2P","acc. to DIN EN 61346-2":"F","at 35 °C / rated value":"3 A","at 40 °C / rated value":"2.84 A","at 45 °C / rated value":"2.75 A","at 50 °C / rated value":"2.66 A","at 55 °C / rated value":"2.56 A","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":"Any","acc. to IEC 60947-2 / rated value":"30 kA","Product Feature / Touch Protection":"Yes","Supply Voltage Frequency / Rated Value":"50/60 Hz","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","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","with multi-phase operation / at AC / rated value":"440 V","operating voltage / at DC / rated value / maximum":"72 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/cbd59321c9f197a5dcc8c2352baff156.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=199362&mlfb=5SY7203-7CC"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SY7203-7CC?","answer":"Submit an RFQ through this listing. Pricing and stock are confirmed at quote time through independent distribution channels."},{"question":"What is the closest functional second-source to 5SY7203-7CC?","answer":"The 5SY7206-7CC is a higher-rated sibling in the same SENTRON 5SY7 series — same 2-pole C-curve form factor, same 30 kA breaking capacity, but rated 6 A instead of 3 A. It drops into the same DIN-rail footprint without rewiring, provided the load current allows the higher rating."},{"question":"What compliance documentation does 5SY7203-7CC carry?","answer":"The MCB is rated per IEC 60947-2 (30 kA) and UL 1077 / CSA C22.2 No.235 (5 kA). It is halogen-free and silicon-free, and carries pollution degree 3 and overvoltage category III ratings. 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/5SY7203-7CC","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/5SY7203-7CC 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}}