{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ2270-0KA63","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ2270-0KA63","canonicalUrl":"https://aoctrl.com/siemens/5SQ2270-0KA63","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ2270-0KA63","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 5SQ2270-0KA63, 2-pole miniature circuit breaker, C-curve, 63 A rated current, 3 kA breaking capacity at 400 V AC, 50 Hz.","salesMarkdown":"The SENTRON 5SQ2270-0KA63 is a 2-pole miniature circuit breaker (MCB) from Siemens' SENTRON 5SQ series, designed for 400 V AC, 50 Hz supply. Rated 63 A continuous, it's sized for a sub-feed or a heavy branch circuit in a distribution panel. For most commercial and light-industrial panels fed from a transformer of moderate size, 3 kA is adequate; if your available fault current is higher, you'll need a higher-rated upstream device or a current-limiting MCB. The 2-pole version switches both phase and neutral, with neutral conductor switching confirmed in the design. Occupies 2 width units (standard 18 mm per unit) on a DIN rail. Installation depth is 55 mm, so it fits standard enclosures without crowding the gland plate. Overvoltage category 3 and energy limiting class 3 mean it's suitable for fixed installations with transient overvoltages up to 4 kV.","metaTitle":"SENTRON 5SQ2270-0KA63 MCB, 2-pole C 63A, 3kA, 400V","metaDescription":"SENTRON 5SQ2270-0KA63 circuit breaker, 2-pole, C-curve, 63 A rated current, 3 kA breaking capacity per EN 60898 and IEC 60947-2, 400 V AC, 50 Hz. IP20, 2 width units, current lifec","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["2-Pole MCB (DIN Rail)"],"specifications":{"Number of poles":"2","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":"2","Number of poles / Note":"2P","circuit-breaker / Design":"5SQ","Current / at AC / rated value":"63 A","Tripping characteristic class":"C","acc. to EN 60898 / rated value":"3 kA","acc. to IEC 60947-2 / rated value":"3 kA","Supply voltage / at AC / rated value":"400 V","Supply voltage frequency / rated value":"50 Hz","Product function / neutral conductor switching":"Yes"}},"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=90445&mlfb=5SQ2270-0KA63","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ2270-0KA63/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SQ2270-0KA63?","answer":"3 kA at 400 V AC, certified to both EN 60898 and IEC 60947-2. That's the maximum fault current it can safely interrupt."},{"question":"Will 5SQ2270-0KA63 drop into a panel that was specified around 5SQ2570-2YA04 without rewiring?","answer":"Both are 2-pole SENTRON 5SQ MCBs with the same 55 mm depth and 2 width units, so the mechanical fit is identical. The key difference is the current rating — 5SQ2570-2YA04 is 4 A, while this one is 63 A. If the panel was wired for 4 A branch protection, swapping to a 63 A breaker would require rewiring the load side and verifying that the conductors and downstream devices are rated for 63 A. The breaker itself clips onto the same DIN rail."},{"question":"Where can I buy 5SQ2270-0KA63 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — send your target quantity for a firm price."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ2270-0KA63","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/5SQ2270-0KA63 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}}