{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3647-5KK14","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3647-5KK14","canonicalUrl":"https://aoctrl.com/siemens/5SM3647-5KK14","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3647-5KK14","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON selective RCCB, 5SM3647-5KK14, 4-pole, 80 A rated at 40 °C, 300 mA trip, Type B+, 10 kA SCCR, 400 V AC, 4 MW DIN rail.","salesMarkdown":"The Siemens SENTRON 5SM3647-5KK14 is a selective residual current circuit breaker (RCCB) — 4-pole, rated 80 A at 40 °C, with a 300 mA trip threshold and Type B+ residual current sensitivity. The selective design (short-time delayed) means it coordinates with downstream RCCBs so only the faulted circuit trips, keeping the rest of the installation live. At 50 °C it's still 76.8 A, at 60 °C it's 70.4 A, and at 70 °C it's 64 A. If your panel runs hot, use the 50 °C or 60 °C row for sizing, not the 40 °C headline. Type B+ detects smooth DC residual currents up to the rated frequency, plus AC and pulsed DC — covers VFDs, UPS systems, and EV chargers where pure AC-sensitive RCCBs would be blind. The 300 mA trip level is typical for sub-distribution or final circuits where 30 mA would nuisance-trip on leakage from filters or drives. Short-circuit withstand is 10 kA per IEC 61008-1 and EN 60898 (0.8 kA rated conditional). The let-through current is capped at 7 500 A, and the I²t value is 70 000 A²·s — useful for coordination with upstream MCBs or fuses. The 72 mm width (4 MW) matches standard Siemens SENTRON modular devices — rows line up without adapters. IP20 with conductors connected and distribution board installed; not for wet locations. Silicon-free construction — important for automotive paint shops or semiconductor fabs where silicone outgassing can cause adhesion or contamination issues.","metaTitle":"Siemens SENTRON 5SM3647-5KK14 RCCB, 4-pole, 80 A, 300 mA, Ty","metaDescription":"Siemens SENTRON 5SM3647-5KK14 selective RCCB, 4-pole, 80 A rated, 300 mA trip, Type B+, 10 kA SCCR, 400 V AC, 50/60 Hz. DIN rail mount, 4 MW. Active production, sourced to order.","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":"Selective","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","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":"5 kA","according to IEC 61008-1 / rated value":"0.8 kA","Switching Function / Short-Term Delayed":"No","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":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=97352&mlfb=5SM3647-5KK14","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3647-5KK14/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 5SM3647-5KK14?","answer":"The peer MPNs listed (5SL4363-7, 5SJ6325-7RC, 5SY4304-7CV) are from the same SENTRON family but differ in pole count, trip current, or type — they are not drop-in replacements. The 5SM3647-5KK14 is a 4-pole, 80 A, 300 mA, Type B+ selective RCCB; verify ratings before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3647-5KK14","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/5SM3647-5KK14 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}}