{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SV3646-8KK12","brand":"Siemens","brandSlug":"siemens","productSlug":"5SV3646-8KK12","canonicalUrl":"https://aoctrl.com/siemens/5SV3646-8KK12","factsUrl":"https://aoctrl.com/api/mcp/products/5SV3646-8KK12","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON selective RCCB, 5SV3646-8KK12, 4-pole, 63 A rated at 40 °C, 300 mA residual current, Type A, 10 kA SCCR, DIN rail mount.","salesMarkdown":"The Siemens SENTRON 5SV3646-8KK12 is a 4-pole residual-current circuit breaker (RCCB) with a selective (time-delayed) design, rated 63 A at 40 °C and tripping on a 300 mA residual current of Type A — meaning it detects sinusoidal AC and pulsating DC fault currents, which covers most modern electronic loads. Selective construction means it holds during a downstream fault long enough for the branch RCCB to clear, so only the faulted circuit drops out; the upstream supply stays on the bus. That coordination matters in a distribution panel feeding multiple sub-panels or motor control centres where a nuisance trip on the main would take down the whole unit. Short-circuit withstand is 10 kA per IEC 61008-1, and it carries an EN 60898 rated conditional short-circuit capacity of 0.8 kA — the standard for RCCBs coordinated with an upstream overcurrent device. Snaps onto DIN rail (REG profile). Depth is 70 mm; installation depth matches at 70 mm. Mounting position is any orientation. Rated current holds at 63 A from 40 °C through 60 °C; at 65 °C it derates to 57.35 A, and at 70 °C to 48.84 A. The 5SV3646-8KK12 carries a current-production lifecycle stage. The permissible let-through energy (I²t) is listed at 110 000 A²·s. That number governs the thermal stress the RCCB can pass to downstream conductors during a fault.","metaTitle":"Siemens SENTRON 5SV3646-8KK12 RCCB, 4P, 63 A, 300 mA, Type A","metaDescription":"Siemens SENTRON 5SV3646-8KK12 selective RCCB, 4-pole, 63 A rated, 300 mA residual, Type A, 10 kA SCCR. Current production. Sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"70 mm","Width":"72 mm","Height":"90 mm","Maximum":"45 °C","Minimum":"-25 °C","Rated Value":"50 Hz","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"DIN rail (REG)","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Product Variations":"SIGRES (harsh ambient conditions)","Maximum Permissible":"75 °C","Minimum Permissible":"-40 °C","Product Designation":"RCCB","acc. to IEC 81346-2":"F","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Selective","Residual Current Type":"A","acc. to DIN EN 61346-2":"F","I2t value / permissible":"110 000 A²·s","at 40 °C / rated value":"63 A","at 45 °C / rated value":"63 A","at 50 °C / rated value":"63 A","at 55 °C / rated value":"63 A","at 60 °C / rated value":"63 A","at 65 °C / rated value":"57.35 A","at 70 °C / rated value":"48.84 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","Position / Of Power Supply Cord":"top or bottom","Let-Through Current / Permissible":"7 100 kA","Tripping Fault Current / Rated Value":"300 mA","supply voltage / at AC / rated value":"230/400 V","Surge Current Resistance / Rated Value":"5 kA","according to IEC 61008-1 / rated value":"0.8 kA","Switching Function / Short-Term Delayed":"No","operational current / at AC / rated value":"63 A","Supply Voltage / For Testing Equipment / Minimum":"100 V","size of installation devices / acc. to DIN 43880":"1","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ed280646498d532ac59ddeccc41d4200.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=627709&mlfb=5SV3646-8KK12","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SV3646-8KK12/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to 5SV3646-8KK12?","answer":"The peer MPNs listed (5SJ6325-7RC, 5SL6550-7BB, 5SY6613-8) are different classes — miniature circuit breakers and residual-current breakers with different pole counts, ratings, and trip characteristics. They are not drop-in substitutes. The 5SV3646-8KK12 is a 4-pole selective RCCB; verify the specific coordination requirements before considering any alternate."},{"question":"What is the depth of 5SV3646-8KK12?","answer":"Depth is 70 mm, matching the installation depth. This is the dimension from the DIN-rail mounting surface to the front of the device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SV3646-8KK12","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/5SV3646-8KK12 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}}