{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ2170-0KA04","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ2170-0KA04","canonicalUrl":"https://aoctrl.com/siemens/5SQ2170-0KA04","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ2170-0KA04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SQ series, miniature circuit breaker, 1-pole, C-curve, 4 A, 3 kA per EN 60898, 240 VAC, 50 Hz, IP20.","salesMarkdown":"## What this 1-pole C-curve 4 A MCB does on the rail The Siemens SENTRON 5SQ2170-0KA04 is a 1-pole miniature circuit breaker with a C-curve tripping characteristic, rated 4 A at 240 VAC, 50 Hz. Rated for AC/DC operation, it fits both AC distribution panels and DC branch circuits at the same current, though the voltage rating on DC side follows the manufacturer's derating curve — something to check if you're wiring a 48 VDC telecom bay. ## DIN-rail footprint and panel integration","metaTitle":"Siemens SENTRON 5SQ2170-0KA04 MCB, 1P C-Curve 4A 3kA","metaDescription":"Siemens SENTRON 5SQ2170-0KA04 miniature circuit breaker, 1-pole, C-curve, 4 A, 3 kA breaking capacity per EN 60898, 240 VAC, IP20. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Number of poles":"1","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":"1","Number of poles / Note":"1P","circuit-breaker / Design":"5SQ","Current / at AC / rated value":"4 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":"No"}},"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=94706&mlfb=5SQ2170-0KA04","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ2170-0KA04/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SQ2170-0KA04 and how do I get a price?","answer":"Sourced to order through independent distribution. Submit an RFQ; availability and current pricing are confirmed at quote time."},{"question":"What is 5SQ2170-0KA04's number of poles?","answer":"It is a 1-pole (1P) breaker, occupying a single width unit on the DIN rail."},{"question":"Will 5SQ2170-0KA04 drop into a panel specified around 5SQ2170-2YA15 without rewiring?","answer":"Yes — both are 1-pole, 55 mm deep, same SENTRON 5SQ platform and IP20 rating. The 2YA15 is a 1.6 A variant; swapping to the 4 A 0KA04 only changes the overcurrent threshold, not the footprint or wiring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ2170-0KA04","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/5SQ2170-0KA04 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}}