{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ2270-0KA16","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ2270-0KA16","canonicalUrl":"https://aoctrl.com/siemens/5SQ2270-0KA16","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ2270-0KA16","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 5SQ series, T55 design, 2-pole miniature circuit breaker, C-curve, 16 A rated current, 3 kA breaking capacity per EN 60898, 400 V AC, 50 Hz, IP20.","salesMarkdown":"## SENTRON 5SQ2270-0KA16 — 2-pole C-curve MCB, 16 A, 3 kA The SENTRON 5SQ2270-0KA16 is a 2-pole miniature circuit breaker from the 5SQ T55 series, rated 16 A with a C tripping characteristic and a 3 kA breaking capacity per EN 60898 at 400 V AC, 50 Hz. The 2-pole design switches both phase and neutral, with neutral conductor switching confirmed on this variant. The 16 A C-curve handles typical branch circuits for socket outlets, small motor loads, or lighting groups; the C characteristic gives enough magnetic-trip headroom for motor inrush without delaying on a hard short. Installation depth is 55 mm, and the unit occupies 2 width units on a DIN rail — standard 36 mm footprint for a 2-pole MCB. ## Panel integration note Snap-on DIN rail mount, 2 width units (36 mm). Overvoltage category 3 and energy limiting class 3 — typical for fixed-installation distribution boards where the breaker provides both overload and short-circuit protection downstream of the main switch.","metaTitle":"SENTRON 5SQ2270-0KA16 MCB, 2-Pole C-Curve 16A, 3kA","metaDescription":"SENTRON 5SQ2270-0KA16 miniature circuit breaker, 2-pole, C-curve, 16 A rated current, 3 kA breaking capacity per EN 60898, 400 V AC. Current lifecycle stage. Available 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":"16 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":"$16.78","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=73276&mlfb=5SQ2270-0KA16","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ2270-0KA16/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SQ2270-0KA16 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Send your quantity and target delivery window for a current price and availability confirmation."},{"question":"What is the closest functional second-source to 5SQ2270-0KA16?","answer":"Within the same SENTRON 5SQ T55 series, the 5SQ2270-2YA04 is electrically identical in poles, voltage, breaking capacity, and curve — the only difference is its 4 A rating versus the 16 A of this part. For a 16 A requirement, the 5SQ2270-0KA16 is the direct fit."},{"question":"What is the number of poles on 5SQ2270-0KA16?","answer":"It is a 2-pole device (2P), switching both phase and neutral."},{"question":"What type of voltage does 5SQ2270-0KA16 support?","answer":"It is rated for AC/DC voltage, with a specific AC rating of 400 V at 50 Hz."},{"question":"Will 5SQ2270-0KA16 drop into a panel specified around 5SQ2270-2YA04 without rewiring?","answer":"Yes — both share the same 2-pole footprint, 55 mm depth, 2 width units, DIN-rail mount, and IP20 protection. The only difference is the current rating: 16 A on this part versus 4 A on the 2YA04. If the panel was designed for a 4 A branch, swapping to 16 A without verifying the downstream load and wire size is not recommended."},{"question":"What compliance documentation does Siemens provide for 5SQ2270-0KA16?","answer":"The part is designed and tested per EN 60898 for breaking capacity and tripping characteristics. Standard Siemens documentation includes a CE declaration of conformity and RoHS/REACH compliance statements available through the support portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ2270-0KA16","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/5SQ2270-0KA16 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}}