{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ2270-0KA20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ2270-0KA20","canonicalUrl":"https://aoctrl.com/siemens/5SQ2270-0KA20","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ2270-0KA20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SQ2270-0KA20, miniature circuit breaker, 2-pole, C tripping characteristic, 20 A rated current, 400 V AC, 3 kA breaking capacity per EN 60898, IP20, 55 mm depth.","salesMarkdown":"## SENTRON 5SQ2270-0KA20 — 2-pole C-curve MCB at 20 A The Siemens SENTRON 5SQ2270-0KA20 is a 2-pole miniature circuit breaker (MCB) with a C tripping characteristic, rated 20 A at 400 V AC, 50 Hz. The C-curve (5–10× In) suits inductive loads like small motors, fluorescent lighting banks, and transformer-fed circuits where inrush would nuisance-trip a B-curve. Installation depth is 55 mm, so it fits standard distribution boards without crowding the wiring gutter. Overvoltage category 3 and energy limiting class 3 mean it's designed for fixed-installation downstream of the utility meter, not for portable equipment. ## Panel fit and compliance notes The 55 mm depth leaves clearance for wiring ducts and busbar systems in standard 100 mm deep enclosures. Neutral conductor switching is integral, so no external link is needed for the switched neutral pole; this simplifies wiring in TN-S or TT systems where both phase and neutral must be isolated.","metaTitle":"Siemens 5SQ2270-0KA20 SENTRON MCB, 2P C 20A 400V AC","metaDescription":"Siemens SENTRON 5SQ2270-0KA20 miniature circuit breaker, 2-pole, C-curve, 20A, 400V AC, 3kA breaking capacity per EN 60898. Current lifecycle stage. Quoted to order.","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":"20 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=292731&mlfb=5SQ2270-0KA20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ2270-0KA20/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of the 5SQ2270-0KA20?","answer":"3 kA rated breaking capacity per EN 60898 at 400 V AC. This is the standard residential/light commercial level; verify the prospective short-circuit current at the installation point does not exceed this value."},{"question":"Will the 5SQ2270-0KA20 fit a panel designed for the 4-pole 5SQ2670-2YA16?","answer":"No — the 5SQ2270-0KA20 is a 2-pole (2P) unit occupying 2 width units, while the 5SQ2670-2YA16 is a 4-pole (4P) unit at 4 width units. The mounting rail footprint and wiring scheme are different; you would need to re-terminate and adjust the busbar arrangement."},{"question":"How do I get current pricing and availability for the 5SQ2270-0KA20?","answer":"Submit an RFQ through this listing. We source the part through independent distribution and confirm pricing and lead time at quote time — no automated stock figures here, but we respond with a firm commercial offer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ2270-0KA20","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/5SQ2270-0KA20 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}}