{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3647-4","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3647-4","canonicalUrl":"https://aoctrl.com/siemens/5SM3647-4","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3647-4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCCB, short-time delayed, Type B, 4-pole, 80 A rated, 300 mA residual, 400 V AC, DIN rail, IP20.","salesMarkdown":"The Siemens SENTRON 5SM3647-4 is a 4-pole RCCB rated 80 A at 400 V AC, 50/60 Hz, with a 300 mA Type B residual current trip. The short-time delayed design provides selectivity with downstream RCCBs. Snap-on DIN rail (REG) mounting, 4 modular-width units wide (72 mm). Depth is 77 mm; installation depth 70 mm. Mounting position is unrestricted — horizontal, vertical, or inverted all within spec. Silicon-free construction suits environments where silicone outgassing can contaminate contacts or optics. Derate linearly above that: 76.8 A at 50 °C, 73.6 A at 55 °C, 70.4 A at 60 °C, 67.2 A at 65 °C, 64 A at 70 °C. For a panel running warm (say 50 °C interior), the continuous load should be kept under 77 A per pole — the derating curve is the real limit, not the nameplate 80 A.","metaTitle":"Siemens SENTRON 5SM3647-4 RCCB, 80A 300mA Type B, 4-Pole","metaDescription":"Siemens SENTRON 5SM3647-4 RCCB, 80A rated, 300mA Type B residual current, 4-pole, short-time delayed. DIN rail mount, IP20. Sourced 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","Width":"72 mm","Height":"90 mm","Maximum":"45 °C","Minimum":"-25 °C","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"DIN rail (REG)","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Maximum Permissible":"75 °C","Minimum Permissible":"-40 °C","Product Designation":"RCCB","at AC / rated value":"80 A","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Short-time delayed","Residual Current Type":"B","I2t value / permissible":"70 000 A²·s","at 40 °C / rated value":"80 A","at 45 °C / rated value":"80 A","at 50 °C / rated value":"76.8 A","at 55 °C / rated value":"73.6 A","at 60 °C / rated value":"70.4 A","at 65 °C / rated value":"67.2 A","at 70 °C / rated value":"64 A","Short-Circuit Current Rating":"0 kA","Number Of Modular Width Units":"4","Product Feature / Silicon-Free":"Yes","Position / Of Power Supply Cord":"Top or bottom (bottom for SIGRES function also in switched-off state)","Let-Through Current / Permissible":"7 500 A","according to EN 60898 / rated value":"0.8 kA","Tripping Fault Current / Rated Value":"300 mA","Surge Current Resistance / Rated Value":"3 kA","according to IEC 61008-1 / rated value":"0.8 kA","Switching Function / Short-Term Delayed":"Yes","Value Range / Of The Operating Frequency":"50/60 Hz","value range / of the supply voltage / at AC":"400 V","Value Range / Of The Supply Voltage Frequency":"50 Hz","Supply Voltage / For Testing Equipment / Minimum":"195 V","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1,383.74","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=311367&mlfb=5SM3647-4","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3647-4/alternatives.json"},"ai":{"faq":[{"question":"What is 5SM3647-4's listed depth?","answer":"77 mm overall depth; installation depth is 70 mm into the panel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3647-4","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/5SM3647-4 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}}