{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ2270-0KA03","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ2270-0KA03","canonicalUrl":"https://aoctrl.com/siemens/5SQ2270-0KA03","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ2270-0KA03","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 5SQ2270-0KA03, miniature circuit breaker, 2-pole, C characteristic, 3 A rated current, 400 V AC, 3 kA breaking capacity per EN 60898, IP20, 55 mm installation depth.","salesMarkdown":"It is designed for branch-circuit protection in final distribution boards, switching both phase and neutral conductors. That is a standard residential and light-commercial level; if your panel's prospective short-circuit current exceeds 3 kA, you need an upstream current-limiting device or a higher-rated breaker. Installation depth is 55 mm — shallower than many SENTRON siblings (the 5SU9 RCBOs run 70–77 mm), which matters when the gland plate or enclosure depth is tight. IP20 rated, so it belongs inside a distribution board or enclosed panel — not in a wet or dust-exposed location. Overvoltage category III confirms it is rated for fixed-installation downstream of the utility meter. Energy limiting class 3 means it restricts let-through energy in a fault, helping with downstream device coordination and reducing arc-flash risk on the branch.","metaTitle":"SENTRON 5SQ2270-0KA03 MCB, 2-pole C-curve 3A, 400V AC","metaDescription":"SENTRON 5SQ2270-0KA03 miniature circuit breaker, 2-pole, C characteristic, 3 A rated current, 400 V AC, 3 kA breaking capacity per EN 60898. Current lifecycle stage. Quoted to orde","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":"3 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":"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=194517&mlfb=5SQ2270-0KA03","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ2270-0KA03/alternatives.json"},"ai":{"faq":[{"question":"Does 5SQ2270-0KA03 switch the neutral?","answer":"Yes, it is a 2-pole breaker with neutral conductor switching — both phase and neutral are disconnected when the breaker trips or is manually opened."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ2270-0KA03","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/5SQ2270-0KA03 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}}