{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ2370-0KA04","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ2370-0KA04","canonicalUrl":"https://aoctrl.com/siemens/5SQ2370-0KA04","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ2370-0KA04","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 5SQ2370-0KA04, miniature circuit breaker, 3-pole, C characteristic, 4 A rated current, 3 kA breaking capacity per EN 60898, 400 V AC, 50 Hz, IP20.","salesMarkdown":"The SENTRON 5SQ2370-0KA04 is a 3-pole miniature circuit breaker with a C tripping characteristic, rated at 4 A at 400 V AC and 50 Hz. ## Fit and deployment The 55 mm installation depth keeps it flush with standard distribution boards. IP20 rated — suitable for dry indoor enclosures; no washdown rating, so keep it behind a cabinet door in wet environments. Operates on AC or DC supply (type of voltage AC/DC), though the rated breaking capacity of 3 kA is specified per EN 60898 at AC. Overvoltage category 3 and energy limiting class 3 mean it handles transient overvoltages in fixed installations and limits let-through energy during faults. No neutral conductor switching — this is a 3-pole device for 3-phase circuits only.","metaTitle":"SENTRON 5SQ2370-0KA04 Circuit Breaker, 3-Pole C 4A, 3kA","metaDescription":"SENTRON 5SQ2370-0KA04 miniature circuit breaker, 3-pole, C-curve, 4 A rated current, 3 kA breaking capacity per EN 60898, 400 V AC, IP20. Current lifecycle stage, available to orde","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":"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":"No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$55.99","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=172557&mlfb=5SQ2370-0KA04","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ2370-0KA04/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SQ2370-0KA04?","answer":"3 kA per EN 60898 at 400 V AC. This is a standard-breaking-capacity MCB suitable for final subcircuits where the prospective fault current does not exceed 3 kA."},{"question":"Where can I buy 5SQ2370-0KA04 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — send the BOM line for a firm commercial offer."},{"question":"Does 5SQ2370-0KA04 switch the neutral?","answer":"No. The product function explicitly states no neutral conductor switching. This is a 3-pole device for 3-phase circuits only; the neutral must be connected separately if required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ2370-0KA04","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/5SQ2370-0KA04 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}}