{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ2570-2YA04","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ2570-2YA04","canonicalUrl":"https://aoctrl.com/siemens/5SQ2570-2YA04","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ2570-2YA04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SQ series miniature circuit breaker, 5SQ2570-2YA04, 2-pole (1+N), C-curve 4 A, 3 kA breaking capacity per EN 60898, 400 V AC, 50 Hz, IP20, neutral conductor switching.","salesMarkdown":"The Siemens SENTRON 5SQ2570-2YA04 is a 2-pole miniature circuit breaker (1+N) rated 4 A with a C tripping characteristic, designed for 400 V AC, 50 Hz systems. The 3 kA breaking capacity per EN 60898 covers most domestic fault levels; for industrial panels with higher prospective short-circuit current, you'd step up to the 6 kA or 10 kA class in the same SENTRON 5SQ family. Compared to the 3-pole 5SQ2370-2YA04 (same 4 A C-curve, same 3 kA breaking capacity, same 55 mm depth), this 2-pole unit adds neutral switching and occupies 2 width units instead of 3. The 5SQ2370-2YA04 does not switch the neutral — it's a 3-pole device for three-phase loads without neutral. If your panel was laid out for the 3-pole variant, the 2-pole 5SQ2570-2YA04 will not drop in without rewiring: the pole count and busbar arrangement differ. For a 4-pole alternative with neutral switching at 16 A, see the 5SQ2670-2YA16. Two width units (18 mm each) means a 36 mm DIN rail footprint. The C-curve (5–10× In) handles motor inrush and transformer loads better than a B-curve; for purely resistive lighting or heating circuits, a B-curve would trip faster on short-circuit but the C-curve is the common choice for mixed loads.","metaTitle":"Siemens SENTRON 5SQ2570-2YA04 MCB, 2P, C 4A, 3 kA","metaDescription":"Siemens SENTRON 5SQ2570-2YA04 miniature circuit breaker, 2-pole, C-curve 4 A, 3 kA breaking capacity per EN 60898, 400 V AC, neutral switching. Current lifecycle. 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":"4 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=229873&mlfb=5SQ2570-2YA04","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ2570-2YA04/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SQ2570-2YA04 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the closest functional second-source for 5SQ2570-2YA04?","answer":"The closest functional peer is the 3-pole 5SQ2370-2YA04 (same 4 A C-curve, same 3 kA breaking capacity), but it does not switch the neutral and occupies 3 width units. For a 4-pole version with neutral switching at 16 A, consider the 5SQ2670-2YA16."},{"question":"Will 5SQ2570-2YA04 drop into a panel specified around 5SQ2370-2YA04 without rewiring?","answer":"No — the 2-pole 5SQ2570-2YA04 has a different pole count and busbar arrangement than the 3-pole 5SQ2370-2YA04. It will not drop in without rewiring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ2570-2YA04","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/5SQ2570-2YA04 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}}