{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY4503-7CV","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY4503-7CV","canonicalUrl":"https://aoctrl.com/siemens/5SY4503-7CV","factsUrl":"https://aoctrl.com/api/mcp/products/5SY4503-7CV","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SY4503-7CV, MCB, Icu=15kA 230/400V, 1P+N, C3 curve.","salesMarkdown":"The 5SY4503-7CV: The C3 curve (thermal-magnetic trip) means it holds through inrush up to about 5–10× rated current before the magnetic trip fires — typical for lighting, resistive loads, or small motor circuits where the start-up surge isn't brutal. The 1P+N pole arrangement switches the phase and disconnects the neutral, so it fits single-phase sub-circuits in a three-phase distribution board where you need neutral isolation. DIN-rail mount, standard 18 mm per pole width, snaps into any enclosure that accepts a 35 mm rail.","metaTitle":"Siemens 5SY4503-7CV MCB, 15kA Icu 1P+N C3","metaDescription":"Siemens 5SY4503-7CV miniature circuit breaker, Icu=15kA at 230/400V, 1P+N, C3 curve, lifecycle stage current. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8cf7be2a1398d97c8a8ad91e99014fd7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1531646&mlfb=5SY4503-7CV","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SY4503-7CV/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SY4503-7CV?","answer":"The 5SY4503-7CV has a short-circuit breaking capacity (Icu) of 15 kA at both 230 V and 400 V, in a 1P+N configuration with a C3 tripping characteristic."},{"question":"Where can I buy the 5SY4503-7CV?","answer":"This part is 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":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY4503-7CV","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/5SY4503-7CV when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}