{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7403-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7403-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY7403-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7403-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON miniature circuit breaker, 5SY7403-7CC, 4-pole, C-tripping characteristic, 3 A rated current, 30 kA breaking capacity per IEC 60947-2, IP20.","salesMarkdown":"The Siemens 5SY7403-7CC is a SENTRON miniature circuit breaker, 4-pole, C-curve, rated 3 A at 50/60 Hz AC. It carries a 30 kA breaking capacity per IEC 60947-2, with a 5 kA rating per UL 1077 and CSA C22.2 No.235. Finger-safe touch protection is built in. ## Temperature Derating Above that, derate linearly: 2.84 A at 40 °C, 2.75 A at 45 °C, 2.66 A at 50 °C, 2.56 A at 55 °C. If the panel runs hot, size the breaker for the actual load current at your ambient, not the 40 °C nameplate. ## Compliance & Approvals Halogen-free and silicon-free construction. Sealable for lockout/tagout. 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 5SY7403-7CC SENTRON MCB, 4P C-3A, 30kA IEC","metaDescription":"Siemens SENTRON 5SY7403-7CC miniature circuit breaker, 4-pole, C-curve, 3 A rated, 30 kA breaking capacity per IEC 60947-2. Active production. Quoted on request.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"72 mm","title":"5SY7403-7CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 400 V 15kA, 4-pole, C, 3 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"4","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":"4P","acc. to DIN EN 61346-2":"F","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":"4","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/754cdb136c416b95476b3159baca97a6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=438751&mlfb=5SY7403-7CC"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY7403-7CC?","answer":"30 kA per IEC 60947-2, and 5 kA per UL 1077 and CSA C22.2 No.235. The IEC rating covers industrial fault levels; the UL/CSA rating applies to North American branch-circuit applications."},{"question":"What is the temperature derating for 5SY7403-7CC above 40 °C?","answer":"At 45 °C rated current drops to 2.75 A, at 50 °C to 2.66 A, and at 55 °C to 2.56 A. Size the breaker for the actual load at your panel ambient."},{"question":"Where can I buy 5SY7403-7CC?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7403-7CC","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/5SY7403-7CC 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}}