{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ2570-0KA40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ2570-0KA40","canonicalUrl":"https://aoctrl.com/siemens/5SQ2570-0KA40","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ2570-0KA40","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 5SQ2570-0KA40, 2-pole 1P+N miniature circuit breaker, 40 A, C characteristic, 3 kA per EN 60898, 240 V AC, IP20, 2 width units.","salesMarkdown":"The C-curve means it tolerates moderate inrush (5–10× rated current) before tripping, making it a standard choice for general-purpose lighting and socket-outlet circuits in commercial and residential final distribution boards. ## Integration and footprint Occupies 2 width units on a standard DIN rail. Installation depth is 55 mm. IP20 finger-safe enclosure. Neutral conductor switching is built in.","metaTitle":"SENTRON 5SQ2570-0KA40 MCB, 2-Pole 1P+N, 40A C-Curve, 3kA","metaDescription":"SENTRON 5SQ2570-0KA40 miniature circuit breaker, 2-pole 1P+N, 40 A rated current, C tripping characteristic, 3 kA breaking capacity per EN 60898. IP20. Current-production part, quo","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-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":"1P+N","circuit-breaker / Design":"5SQ","Current / at AC / rated value":"40 A","Tripping characteristic class":"C","acc. to EN 60898 / rated value":"3 kA","Supply voltage / at AC / rated value":"240 V","Supply voltage frequency / rated value":"50 Hz","Product function / neutral conductor switching":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$45.76","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=133912&mlfb=5SQ2570-0KA40","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ2570-0KA40/alternatives.json"},"ai":{"faq":[{"question":"Will 5SQ2570-0KA40 drop into a panel specified around 5SQ2570-2YA50 without rewiring?","answer":"Both are 2-pole SENTRON 5SQ breakers on the same 55 mm depth and 2 width-unit DIN-rail footprint. The 5SQ2570-2YA50 is a 2P (two protected poles) unit rated 50 A at 400 V; the 5SQ2570-0KA40 is 1P+N (one protected pole plus switched neutral) rated 40 A at 240 V. Mechanical fit is identical, but the pole count and voltage/current ratings differ — verify the circuit design before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ2570-0KA40","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/5SQ2570-0KA40 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}}