{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ2370-0KA05","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ2370-0KA05","canonicalUrl":"https://aoctrl.com/siemens/5SQ2370-0KA05","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ2370-0KA05","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SQ series, miniature circuit breaker, 5SQ2370-0KA05, 3-pole, C-curve, 5 A, 400 V AC, 3 kA per EN 60898, IP20, 55 mm depth.","salesMarkdown":"## Siemens SENTRON 5SQ2370-0KA05 — 3-pole MCB, C-curve, 5 A The Siemens SENTRON 5SQ2370-0KA05 is a 3-pole miniature circuit breaker rated at 5 A with a C tripping characteristic, designed for 400 V AC systems at 50 Hz. The IP20 finger-safe enclosure suits installation inside a distribution board or control panel — not for wet or washdown environments. At 5 A rated current and 400 V AC, it handles single-phase or three-phase circuits up to that continuous load. The 3-pole configuration switches all three phases simultaneously with no neutral pole switching. ## Panel integration The IP20 protection class requires installation inside an enclosure with a door or cover — it is not rated for exposed mounting. Overvoltage category 3 and energy limiting class 3 indicate it is designed for fixed-installation distribution boards with coordination to downstream devices.","metaTitle":"Siemens SENTRON 5SQ2370-0KA05 MCB, 3-pole C-curve 5A 400V","metaDescription":"Siemens SENTRON 5SQ2370-0KA05 miniature circuit breaker, 3-pole, C-curve, 5A rated at 400V AC, 3kA breaking capacity per EN 60898. IP20, 55mm depth. Current lifecycle stage. Quoted","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":"5 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=434389&mlfb=5SQ2370-0KA05","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ2370-0KA05/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SQ2370-0KA05?","answer":"The breaking capacity is 3 kA per EN 60898 at 400 V AC."},{"question":"What is the tripping characteristic of this MCB?","answer":"It has a C tripping characteristic, meaning it trips between 5× and 10× the rated current of 5 A."},{"question":"Where can I buy 5SQ2370-0KA05?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will 5SQ2370-0KA05 drop into a panel specified for 5SQ2370-2YA04?","answer":"Yes, both share the same 3-pole DIN-rail footprint, 55 mm depth, IP20 rating, and 400 V AC rating. The difference is the current rating: 5 A on this unit versus 4 A on the 2YA04 variant. No rewiring is needed if the circuit load is within 5 A."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ2370-0KA05","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/5SQ2370-0KA05 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}}