{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ2370-0KA20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ2370-0KA20","canonicalUrl":"https://aoctrl.com/siemens/5SQ2370-0KA20","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ2370-0KA20","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 5SQ2370-0KA20, miniature circuit breaker, 3-pole, C characteristic, 20 A, 3 kA per EN 60898, 400 V AC, 50 Hz, IP20, 55 mm deep.","salesMarkdown":"## Integrator note — 5SQ2370-0KA20 The SENTRON 5SQ2370-0KA20 is a 3-pole miniature circuit breaker with a C tripping characteristic, rated at 20 A and 400 V AC, 50 Hz. Occupies 3 width units, installs 55 mm deep. Rated for overvoltage category 3 and energy limiting class 3. IP20 protects against finger contact. ## Panel fit and compliance No neutral switching on this 3-pole unit — it breaks only the three phases. The C-curve and 3 kA rating are declared per EN 60898; the part also carries overvoltage category 3 and energy limiting class 3, which are the usual parameters for selectivity studies in a distribution board.","metaTitle":"SENTRON 5SQ2370-0KA20 MCB, 3-pole C-curve 20 A, 3 kA","metaDescription":"SENTRON 5SQ2370-0KA20 miniature circuit breaker, 3-pole, C tripping characteristic, 20 A rated current, 3 kA breaking capacity per EN 60898 at 400 V AC. Current lifecycle stage. Qu","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Number of poles":"3","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":"3","Number of poles / Note":"3P","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":"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=363755&mlfb=5SQ2370-0KA20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ2370-0KA20/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SQ2370-0KA20 and get a price?","answer":"We source this part to order against an RFQ. Submit a request for quote and we will confirm current availability and pricing at that time — no stock count or price figure is published here because the market moves."},{"question":"Will 5SQ2370-0KA20 drop into a panel specified around 5SQ2370-2YA04?","answer":"Yes, mechanically and electrically it fits the same DIN-rail slot, same 55 mm depth, same 3-pole wiring pattern. The only change is the ampacity — 20 A versus 4 A — so the upstream protection and cable sizing must be verified for the higher load."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ2370-0KA20","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/5SQ2370-0KA20 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}}