{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3647-5BG","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3647-5BG","canonicalUrl":"https://aoctrl.com/siemens/5SM3647-5BG","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3647-5BG","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SM3647-5BG residual current circuit breaker, 4-pole, type B, selective, In 80 A, 300 mA, Un AC 400 V.","salesMarkdown":"## Type B Selective RCCB for 400 V Three-Phase Feeders The Siemens 5SM3647-5BG is a 4-pole residual current operated circuit breaker (RCCB) rated for 80 A continuous load at 400 V AC, with a 300 mA trip sensitivity and type B, selective response curve. Type B detection covers AC, pulsating DC, and smooth DC fault currents up to the rated frequency — essential where variable-speed drives, UPS systems, or rectifier loads generate smooth DC leakage that standard AC/type A RCCBs cannot sense. The selective (time-delayed) characteristic coordinates with downstream 30 mA RCDs, letting the feeder RCCB ride through transient earth faults without nuisance tripping while the branch device clears a sustained fault first. DIN-rail mount, 4-pole width for panel integration.","metaTitle":"5SM3647-5BG Siemens 80A Type B Selective RCCB, 300mA","metaDescription":"Siemens 5SM3647-5BG residual current circuit breaker, 4-pole, type B, selective, 80 A rated, 300 mA sensitivity, 400 V AC. Current-production part; order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"lifecycle_stage":"current"}},"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=1357586&mlfb=5SM3647-5BG","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3647-5BG/alternatives.json"},"ai":{"faq":[{"question":"What are the key specifications of the 5SM3647-5BG?","answer":"It is a 4-pole residual current operated circuit breaker, type B, selective, with a rated current of 80 A, a rated residual current of 300 mA, and a rated voltage of 400 V AC."},{"question":"Where can I buy the 5SM3647-5BG and get a price?","answer":"The 5SM3647-5BG is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are provided at that time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3647-5BG","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/5SM3647-5BG 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}}