{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3647-6","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3647-6","canonicalUrl":"https://aoctrl.com/siemens/5SM3647-6","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3647-6","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM3647-6, 4-pole RCCB, 80 A at 40°C, 400 V AC, Type A, 50 Hz, instantaneous, DIN rail.","salesMarkdown":"The Siemens 5SM3647-6 is a 4-pole residual current circuit breaker (RCCB) from the SENTRON family, rated 80 A at 40°C and 400 V AC on a 50 Hz network. The instantaneous (short-time delayed) design means it trips without intentional delay, so it's suited for circuits where nuisance tripping from transient leakage is not expected. ## Thermal derating and short-circuit coordination For panels near heat sources or in warm environments, check the actual ambient against the 40°C baseline. The short-circuit current rating is stated as 0 kA — this RCCB is not designed to interrupt fault currents on its own; it must be paired with an upstream overcurrent protective device (MCB or fuse) that clears the fault. The permissible I²t value of 70,000 A²·s gives a coordination target for the upstream breaker. Surge current resistance is 1 kA, meaning it withstands lightning-induced or switching transients without nuisance tripping.","metaTitle":"Siemens 5SM3647-6 SENTRON RCCB, 4P, 80A, 400V, Type A, 50 Hz","metaDescription":"Siemens 5SM3647-6 SENTRON RCCB, 4-pole, 80 A at 40°C, 400 V AC, Type A, 50 Hz, DIN rail. Current lifecycle stage. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Solid":"1.5 ... 25 mm²","Width":"72 mm","Height":"90 mm","Stranded":"1.5 ... 25 mm²","at 40 Cel":"80 A","at 45 Cel":"80 A","at 50 Cel":"76.8 A","at 55 Cel":"73.6 A","at 60 Cel":"70.4 A","at 65 Cel":"67.2 A","at 70 Cel":"64 A","Rated Value":"50 Hz","Mounting type":"DIN rail (REG)","During Storage":"-40 ... +75 °C","Number of poles":"4","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +45 °C","Operating frequency":"50Hz","Product designation":"RCCB","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage category":"III","Design of the product":"Instantaneous","Number of width units":"4","Type of fault current":"A","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","I2t-value / permissible":"70 000 A²·s","circuit-breaker / Design":"5SM3","Short-circuit current rating":"0 kA","Current / at AC / rated value":"80 A","Product feature / silicon-free":"Yes","Position / of power supply cord":"top or bottom","Protection against electrical shock":"Finger and back-of-hand safe","Supply voltage / at AC / rated value":"400 V","Surge current resistance / rated value":"1 kA","Switching function / short-term delayed":"No","Tripping residual current / rated value":"300 mA","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","Size of installation devices / acc. to DIN 43880":"1","Supply voltage / for testing equipment / minimum":"100 V","Mechanical service life (switching cycles) / typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$419.75","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=117079&mlfb=5SM3647-6","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3647-6/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SM3647-6 and how do I get a price?","answer":"The 5SM3647-6 is sourced through independent distribution channels. Submit an RFQ to receive a firm price and availability confirmation for your required quantity."},{"question":"What is the closest functional alternative to 5SM3647-6?","answer":"The 5SL4363-7 is a 4-pole RCCB from the same SENTRON family, also Type A and 80 A at 400 V, but it is a different design variant (5SL series). It shares the same pole count, current rating, voltage, and fault type, so it is a functional second-source candidate. However, verify the physical footprint and terminal range before substituting in an existing panel design."},{"question":"What is 5SM3647-6's listed depth?","answer":"The depth is 77 mm, with an installation depth of 70 mm."},{"question":"What is 5SM3647-6's solid conductor range?","answer":"The terminal accepts solid conductors from 1.5 mm² to 25 mm²."},{"question":"Will 5SM3647-6 drop into a panel specified around 5SL4363-7 without rewiring?","answer":"Both are 4-pole RCCBs on DIN rail with 80 A rating and 400 V AC, so the electrical fit is the same. The 5SM3647-6 has a depth of 77 mm versus the 5SL4363-7's depth; if the panel has clearance for 77 mm, it will mount without rewiring. Check the terminal range — both accept 1.5–25 mm² solid/stranded — so existing conductors should fit."},{"question":"What compliance documentation does Siemens provide for 5SM3647-6?","answer":"The product is designed to standards including DIN EN 61346-2 and DIN EN 81346-2 (functional designation F). It carries IP20 protection and overvoltage category III. For specific declarations (RoHS, REACH, UL, IEC), refer to the manufacturer's documentation available through the product support portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3647-6","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/5SM3647-6 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}}