{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ2260-0KA40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ2260-0KA40","canonicalUrl":"https://aoctrl.com/siemens/5SQ2260-0KA40","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ2260-0KA40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON T55 miniature circuit breaker, 5SQ2260-0KA40, 2-pole, B tripping characteristic, 40 A rated current at 400 V AC, 3 kA breaking capacity per EN 60898, IP20.","salesMarkdown":"Overvoltage category 3 and energy limiting class 3 mean it coordinates with downstream wiring and upstream protective devices in a typical TN or TT system. Neutral conductor switching is built in — the 2-pole design breaks both phase and neutral, which is required in some national wiring rules for final circuits and for isolating the load completely during maintenance. ## Integration into the panel The 55 mm installation depth keeps it flush with most consumer unit enclosures and shallow distribution boards.","metaTitle":"Siemens 5SQ2260-0KA40 SENTRON MCB, 2P, B Curve, 40 A, 3 kA","metaDescription":"Siemens 5SQ2260-0KA40 SENTRON T55 MCB. 2-pole, B characteristic, 40 A rated at 400 V AC, 3 kA breaking capacity per EN 60898. IP20, 2 width units. Current production. Quoted to ord","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":"40 A","Tripping characteristic class":"B","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":"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=186708&mlfb=5SQ2260-0KA40","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ2260-0KA40/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ2260-0KA40","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/5SQ2260-0KA40 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}}