{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ2370-0KA16","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ2370-0KA16","canonicalUrl":"https://aoctrl.com/siemens/5SQ2370-0KA16","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ2370-0KA16","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SQ2370-0KA16, miniature circuit breaker, 3-pole, C characteristic, 16 A, 400 V AC, 3 kA per EN 60898, IP20, 3 width units.","salesMarkdown":"The Siemens SENTRON 5SQ2370-0KA16 is a 3-pole miniature circuit breaker rated 16 A at 400 V AC with a C tripping characteristic and 3 kA breaking capacity per EN 60898. Three poles on a 400 V AC supply means it simultaneously opens all phases on a fault, which is standard for three-phase branch circuits. Snap-on DIN rail mounting, 3 width units (each 18 mm typical), IP20 protected terminals. Accepts copper conductors sized for 16 A branch circuits. No neutral pole switching — the breaker interrupts phase conductors only. Energy limiting class 3 means it restricts let-through energy to limit downstream damage during a short circuit.","metaTitle":"Siemens SENTRON 5SQ2370-0KA16 MCB, 3-Pole, C-Curve, 16A, 3kA","metaDescription":"Siemens SENTRON 5SQ2370-0KA16 miniature circuit breaker, 3-pole, C tripping characteristic, 16 A rated current, 400 V AC, 3 kA breaking capacity per EN 60898. IP20, 3 width units.","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","Degree of pollution":"3","Product designation":"Miniature circuit breaker","Protection class IP":"IP20","Overvoltage Category":"3","Design of the product":"Miniature circuit breaker 5SQ","Energy limiting class":"3","Number Of Width Units":"3","Number of poles / Note":"3P","circuit-breaker / Design":"5SQ","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","Operating current / at AC / rated value":"16 A","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=237906&mlfb=5SQ2370-0KA16","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ2370-0KA16/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SQ2370-0KA16?","answer":"3 kA per EN 60898 at 400 V AC. That rating governs the maximum prospective fault current the breaker can safely interrupt. If your panel's available fault current exceeds 3 kA, you need a higher-rated device or a current-limiting upstream element."},{"question":"Will 5SQ2370-0KA16 drop into a panel specified around 5SQ2370-2YA05?","answer":"Yes — same 3-pole, C-curve, 400 V AC, 3 kA, 3-width-unit DIN-rail footprint, IP20, pollution degree 3, and overvoltage category III. The only difference is the rated current: 16 A on this part versus 0.5 A on 5SQ2370-2YA05. No rewiring or panel modification needed if the branch circuit is sized for 16 A."},{"question":"Where can I buy 5SQ2370-0KA16?","answer":"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."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ2370-0KA16","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/5SQ2370-0KA16 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}}