{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ3670-1BA16","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ3670-1BA16","canonicalUrl":"https://aoctrl.com/siemens/5SQ3670-1BA16","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ3670-1BA16","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SQ series MCB, 4-pole (3P+N), C-curve, 16 A, 400 V AC, 3 kA breaking capacity per EN 60898, IP20, switched neutral.","salesMarkdown":"The Siemens SENTRON 5SQ3670-1BA16 is a 4-pole miniature circuit breaker (3P+N) with a C tripping characteristic, rated 16 A at 400 V AC, 50 Hz. The IP20 finger-safe terminals are standard for enclosed distribution boards — no washdown rating here, so keep it inside the panel. Rated 3 kA per EN 60898, this MCB handles typical residential and light commercial fault currents. In a sub-distribution board with a 3 kA prospective short-circuit current at the terminals, it clears faults within its energy-limiting class 3 — meaning it restricts let-through energy enough to protect downstream wiring and loads. For higher fault levels (e.g., 6 kA or 10 kA at the main panel), you'd need an upstream current-limiting device or a higher-rated breaker in the same SENTRON 5SQ family. ## DIN-rail integration and footprint The IP20 housing means no special sealing for the mounting cutout; just snap it on and bus the phases.","metaTitle":"Siemens SENTRON 5SQ3670-1BA16 MCB, 4-Pole, C-Curve, 16 A, 40","metaDescription":"Siemens SENTRON 5SQ3670-1BA16 4-pole MCB, C-curve, 16 A, 400 V AC, 3 kA per EN 60898. Switched neutral. Current lifecycle stage. Sourced to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Miniature Circuit Breakers (MCB)"],"specifications":{"Number of poles":"4","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+N","circuit-breaker / Design":"5SQ","Current / at AC / rated value":"16 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=50617&mlfb=5SQ3670-1BA16","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ3670-1BA16/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SQ3670-1BA16?","answer":"Rated 3 kA per EN 60898 at 400 V AC. That's the standard for residential and light commercial sub-distribution boards."},{"question":"Does this breaker switch the neutral?","answer":"Yes, the neutral conductor is switched (3P+N configuration). This is required in TN or TT systems where the neutral must be disconnected with the phases."},{"question":"Where can I buy 5SQ3670-1BA16?","answer":"We source this part to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm offer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ3670-1BA16","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/5SQ3670-1BA16 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}}