{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4503-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4503-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY4503-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4503-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY4503-7CC, miniature circuit breaker, 2-pole (1P+N), 3 A rated, C tripping characteristic, 10 kA breaking capacity per EN 60898, 36 mm width, IP20.","salesMarkdown":"## Siemens SENTRON 5SY4503-7CC — 3 A C-Curve MCB, 2-Pole, 10 kA Its 10 kA breaking capacity per EN 60898 means it can safely interrupt fault currents up to that level at 230/400 V AC, 50/60 Hz — sufficient for most sub-distribution boards and machine supply circuits where the prospective short-circuit current stays under that threshold. ## Panel fit and modular integration At 36 mm wide (2 modular width units), this breaker occupies two standard 18 mm DIN-rail slots. Rated IP20 with connected conductors — suitable for enclosed panel use. ## Thermal derating and ambient conditions The 3 A rating holds at 35 °C ambient. At 40 °C it derates to 2.82 A, at 45 °C to 2.73 A, at 50 °C to 2.63 A, and at 55 °C to 2.53 A. The breaker operates across -40 °C to 75 °C ambient, with humidity limits of 95% up to 55 °C, 55% up to 70 °C, and 35% at 75 °C. That covers cold storage areas and warm machine cabinets alike.","metaTitle":"Siemens 5SY4503-7CC SENTRON MCB, 3A C-Curve, 10kA, 2-pole","metaDescription":"Siemens SENTRON 5SY4503-7CC miniature circuit breaker, 3A rated, C characteristic, 10kA breaking capacity per EN 60898. 2-pole 1P+N design, 36mm wide. Active production, sourced to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"36 mm","title":"5SY4503-7CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230 V 10kA, 1+N-pole, C, 3A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P+N","Number Of Poles":"2","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","at AC / rated value":"3 A","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Combined Terminal Top":"Yes","Energy Limitation Class":"3","according to EN 61346-2":"F","at 35 °C / rated value":"3 A","at 40 °C / rated value":"2.82 A","at 45 °C / rated value":"2.73 A","at 50 °C / rated value":"2.63 A","at 55 °C / rated value":"2.53 A","Combined Terminal Bottom":"Yes","according to IEC 81346-2":"F","Suitability For Operation":"Mechanical engineering / industry","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","Position / Of Power Supply Cord":"Any","Product Feature / Touch Protection":"Yes","according to EN 60898 / rated value":"10 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","Product Component / Neutral Conductor Switching":"Yes","operating voltage / at DC / rated value / maximum":"72 V","vibration resistance / according to IEC 60068-2-6":"±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz","with single-phase operation / at AC / rated value":"250 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/b7736bc51665c06849747c03c943f34a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=140936&mlfb=5SY4503-7CC"},"ai":{"faq":[{"question":"Will the 5SY4503-7CC fit in a panel designed for the 5SY7210-7CC?","answer":"Both are 2-module-wide (36 mm) SENTRON MCBs with the same DIN-rail footprint and terminal layout, so the 5SY4503-7CC drops into the same panel position without rewiring. The key difference is the current rating and tripping characteristic — verify your branch circuit requirements."},{"question":"What compliance documentation is available for the 5SY4503-7CC?","answer":"The breaker is halogen-free and silicon-free, and carries the SENTRON brand's standard CE marking per the applicable EN/IEC standards. Specific RoHS/REACH declarations are available on request as part of the RFQ documentation package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4503-7CC","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/5SY4503-7CC 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}}