{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ3670-1BA40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ3670-1BA40","canonicalUrl":"https://aoctrl.com/siemens/5SQ3670-1BA40","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ3670-1BA40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SQ series, 5SQ3670-1BA40, 4-pole MCB, C-curve, 40 A, 3 kA breaking capacity per EN 60898, 400 V AC, 50 Hz, IP20.","salesMarkdown":"## Integrator note — 5SQ3670-1BA40 The Siemens SENTRON 5SQ3670-1BA40 is a 4-pole miniature circuit breaker (3P+N) with a C-curve trip characteristic, rated 40 A at 400 V AC, 50 Hz. The neutral pole is switched (product function / neutral conductor switching = Yes), so this breaker disconnects the neutral as well as the three phases — required in some regional wiring codes and for TN-S or TT systems where a switched neutral is specified. The 55 mm installation depth and 3 width units (17.5 mm per unit) fit standard DIN-rail enclosures; IP20 protection means it is intended for enclosed panel mounting, not wet or dusty environments. ## Panel fit and compliance The 55 mm depth leaves clearance for standard busbar systems and wiring ducts.","metaTitle":"Siemens SENTRON 5SQ3670-1BA40 MCB, 4-pole C-curve 40 A, 3 kA","metaDescription":"Siemens SENTRON 5SQ3670-1BA40 4-pole MCB, C-curve, 40 A rated, 3 kA breaking capacity per EN 60898, 400 V AC. Current lifecycle stage. Quoted to order against 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":"40 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=8186&mlfb=5SQ3670-1BA40","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ3670-1BA40/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SQ3670-1BA40?","answer":"3 kA per EN 60898 at 400 V AC. For higher fault-current installations, verify coordination with the upstream protective device."},{"question":"Where can I buy 5SQ3670-1BA40 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."},{"question":"Does 5SQ3670-1BA40 switch the neutral?","answer":"Yes, the neutral conductor is switched. The breaker is 3P+N, so all four poles — three phases plus neutral — are disconnected when tripped."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ3670-1BA40","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/5SQ3670-1BA40 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}}