{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3647-4KK14","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3647-4KK14","canonicalUrl":"https://aoctrl.com/siemens/5SM3647-4KK14","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3647-4KK14","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCCB, 5SM3 series, 4-pole, 80 A, 300 mA residual, Type B+, short-time delayed, DIN rail mount, 5SM3647-4KK14.","salesMarkdown":"Siemens 5SM3647-4KK14 is a SENTRON RCCB rated 80 A at 40 °C and 45 °C, 300 mA tripping fault current, Type B+. Top or bottom feed is acceptable, and the SIGRES function remains powered even in the switched-off state if fed from the bottom. Silicon-free construction suits environments where silicone outgassing can contaminate contacts or optics. Temperature derating is published: the 80 A rating holds at 40 °C and 45 °C, then steps down to 76.8 A at 50 °C, 73.6 A at 55 °C, 70.4 A at 60 °C, 67.2 A at 65 °C, and 64 A at 70 °C (–). The permissible I²t value of 70 000 A²·s and let-through current of 7 500 kA define the energy-limiting performance under fault conditions.","metaTitle":"Siemens 5SM3647-4KK14 SENTRON RCCB, 4P, 80 A, 300 mA, Type B","metaDescription":"Siemens 5SM3647-4KK14 SENTRON RCCB, 4-pole, 80 A rated current, 300 mA residual, Type B+, short-time delayed, 10 kA SCCR. Current lifecycle stage. Available 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":"10 kA","Number Of Modular Width Units":"4","Product Feature / Silicon-Free":"Yes","acc. to EN 60898 / rated value":"0.8 kA","For Testing Equipment / Minimum":"195 V","Position / Of Power Supply Cord":"Top or bottom (bottom for SIGRES function also in switched-off state)","Let-Through Current / Permissible":"7 500 kA","Tripping Fault Current / Rated Value":"300 mA","Supply Voltage Frequency / Rated Value":"50 Hz","Surge Current Resistance / Rated Value":"3 kA","according to IEC 61008-1 / rated value":"0.8 kA","Switching Function / Short-Term Delayed":"Yes","size of installation devices / acc. to DIN 43880":"1","Mechanical Service Life (Operating Cycles) / Typical":"10 000"}},"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=114919&mlfb=5SM3647-4KK14","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3647-4KK14/alternatives.json"},"ai":{"faq":[{"question":"What is 5SM3647-4KK14 used for?","answer":"It is a 4-pole residual current circuit breaker (RCCB) with Type B+ characteristic, rated 80 A and 300 mA tripping current. It protects circuits where AC, pulsating DC, or smooth DC fault currents may occur — typical for variable-frequency drives, UPS systems, and photovoltaic inverters. The short-time delay prevents nuisance tripping from transient leakage."},{"question":"What is the depth of 5SM3647-4KK14?","answer":"Depth is 77 mm; installation depth is 70 mm. Width is 72 mm, occupying 4 modular width units on DIN rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3647-4KK14","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/5SM3647-4KK14 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}}