{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ2370-0KA63","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ2370-0KA63","canonicalUrl":"https://aoctrl.com/siemens/5SQ2370-0KA63","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ2370-0KA63","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 5SQ2370-0KA63, 3-pole miniature circuit breaker, C-curve, 63 A, 400 V AC, 3 kA breaking capacity, IP20.","salesMarkdown":"The SENTRON 5SQ2370-0KA63 is a 3-pole miniature circuit breaker (MCB) from the 5SQ family, rated 63 A at 400 V AC with a C tripping characteristic. Rated for AC and DC supply voltage (AC/DC type), so it can also serve DC branch circuits within its voltage limits — check the DC voltage rating curve for your specific application. The 55 mm installation depth and 3 width units (roughly 54 mm) fit standard DIN-rail enclosures; The closest sibling in the same 5SQ family is the 5SQ2370-2YA04 — identical poles, voltage, breaking capacity, and footprint, but rated 4 A instead of 63 A. If your BOM called for the 4 A version and you need the 63 A, this part is a direct mechanical swap: same 55 mm depth, same 3 width units, same IP20, same DIN-rail clip. No rewiring needed at the panel level — just confirm the load current matches the new rating. ## Integration note Snap-on DIN-rail mount, 3-pole, no neutral switching. Overvoltage category 3 and energy limiting class 3 — suitable for fixed-installation distribution boards with standard surge coordination. Verify the upstream short-circuit capacity is coordinated at 3 kA or less at the point of installation.","metaTitle":"SENTRON 5SQ2370-0KA63 Circuit Breaker, 3-Pole, C, 63 A","metaDescription":"SENTRON 5SQ2370-0KA63 3-pole MCB, 400 V AC, 3 kA breaking capacity, C-curve, 63 A. Current production. IP20. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Number of poles":"3","Type of voltage":"AC/DC","lifecycle_stage":"current","Installation depth":"55 mm","Product brand name":"SENTRON","Protection class IP":"IP20","Overvoltage category":"3","Energy limiting class":"3","Number of width units":"3","Number of poles / Note":"3P","circuit-breaker / Design":"5SQ","Current / at AC / rated value":"63 A","Tripping characteristic class":"C","acc. to EN 60898 / rated value":"3 kA","Supply voltage / at AC / rated value":"400 V","Supply voltage frequency / rated value":"50 Hz","Product function / neutral conductor switching":"No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=195011&mlfb=5SQ2370-0KA63","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ2370-0KA63/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for 5SQ2370-0KA63?","answer":"Submit an RFQ through this listing. Pricing and stock are confirmed at quote time through independent distribution channels."},{"question":"Will 5SQ2370-0KA63 drop into a panel specified around 5SQ2370-2YA04?","answer":"Yes — both share the same 55 mm depth, 3 width units, IP20, and DIN-rail clip. No rewiring needed; just confirm the load current matches the new rating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ2370-0KA63","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/5SQ2370-0KA63 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}}