{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7503-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7503-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY7503-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7503-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7503-7CC miniature circuit breaker, 2-pole 1P+N, 3 A rated, C tripping characteristic, 30 kA breaking capacity per IEC 60947-2, 76 mm depth, IP20.","salesMarkdown":"It protects downstream wiring and loads from overcurrent and short-circuit faults in 230/400 V AC distribution panels. The 2-pole construction (1P+N) switches the phase and isolates the neutral in a single-width module. Breaking capacity is 30 kA per IEC 60947-2 at 230/400 V AC — this means the breaker can safely interrupt a fault current up to 30,000 A without welding contacts or rupturing the case. For UL 1077 / CSA C22.2 No. 235 supplemental protection applications, the interrupting rating is 5 kA. The 30 kA figure gives headroom in high-fault-capacity installations like main distribution boards or industrial subpanels. Temperature derating is published: at 35 °C ambient the 3 A rating holds; at 40 °C it drops to 2.84 A; at 50 °C to 2.66 A; at 55 °C to 2.56 A. IP20 with connected conductors means the front is finger-safe once wired, but the interior is not sealed against dust ingress — standard for DIN-rail MCBs in enclosed panels. Occupies 2 modular width units (36 mm wide, 90 mm tall, 76 mm deep, 70 mm installation depth). Sealable design allows locking the toggle in the ON or OFF position with a padlock or seal wire — useful for lockout/tagout procedures on industrial machinery. Halogen-free and silicon-free construction meets the material compliance requirements common in clean manufacturing, semiconductor fabs, and food processing environments.","metaTitle":"Siemens 5SY7503-7CC SENTRON MCB, 3A C-Curve 2-Pole 30kA","metaDescription":"Siemens 5SY7503-7CC SENTRON miniature circuit breaker, 3 A rated, C characteristic, 2-pole 1P+N, 30 kA IEC breaking capacity, IP20. Active production, sourced to order.","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":"5SY7503-7CC","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230 V 15kA, 1+N-pole, C, 3A","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":"1P+N","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":"Yes","operating voltage / at DC / rated value / maximum":"72 V","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/9b583bf74cf7fa519140553bfb54803d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=510137&mlfb=5SY7503-7CC"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SY7503-7CC?","answer":"30 kA per IEC 60947-2 at 230/400 V AC, and 5 kA per UL 1077 / CSA C22.2 No. 235 for supplemental protection applications."},{"question":"What is the temperature derating for this MCB?","answer":"At 35 °C the rating is 3 A; at 40 °C it derates to 2.84 A; at 45 °C to 2.75 A; at 50 °C to 2.66 A; at 55 °C to 2.56 A. Ambient above 55 °C requires further derating per the published curve."},{"question":"Where can I buy 5SY7503-7CC and how is it quoted?","answer":"This part is sourced through independent industrial-automation distribution. Submit an RFQ for current pricing and lead time; availability is confirmed at quote time."},{"question":"What compliance documentation does Siemens provide for 5SY7503-7CC?","answer":"The breaker is halogen-free and silicon-free. It carries IEC 60947-2 and UL 1077 / CSA C22.2 No. 235 ratings. Standard manufacturer documentation (declaration of conformity, RoHS/REACH declarations) is available upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7503-7CC","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/5SY7503-7CC 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}}