{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1644-1KK82","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1644-1KK82","canonicalUrl":"https://aoctrl.com/siemens/5SU1644-1KK82","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1644-1KK82","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1644-1KK82, RCBO, 4-pole, 125 A (at 30 °C), C-curve, 300 mA residual current, 10 kA breaking capacity per EN 60898 and IEC 60947-2.","salesMarkdown":"The Siemens 5SU1644-1KK82 is a SENTRON RCBO — a combined residual-current circuit breaker with overcurrent protection — rated 125 A at 30 °C, 4-pole, C-curve trip characteristic, and 300 mA residual-current sensitivity. The C-curve means it holds through motor inrush up to about 5–10× rated current, then trips fast — sized for mixed resistive-inductive loads like pump circuits or compressor feeds. Mounts on DIN rail, any position. At 11 modular width units (roughly 198 mm), it occupies a standard panel slot. Installation depth is 70 mm. IP20 with conductors connected and distribution board installed, so it lives inside a closed enclosure, not exposed to washdown. Thermal derating is published: 125 A at 30 °C drops to 115.62 A at 40 °C, 111.25 A at 45 °C, 106.25 A at 50 °C, 101.25 A at 55 °C, and 96.25 A at 60 °C.","metaTitle":"Siemens 5SU1644-1KK82 SENTRON RCBO, 125 A, 4-Pole, C-Curve,","metaDescription":"Siemens 5SU1644-1KK82 SENTRON RCBO, 125 A rated at 30 °C, 4-pole, C-curve, 300 mA residual current, 10 kA breaking capacity. Current lifecycle. 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":{"Maximum":"75 °C","Minimum":"-40 °C","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"4","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Operating Frequency":"50 Hz","Product Designation":"RCBO","at AC / rated value":"125 A","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Instantaneous","Residual Current Type":"AC","Energy Limitation Class":"3","Weight / With Packaging":"2 030 g","according to EN 61346-2":"F","at 30 °C / rated value":"125 A","at 40 °C / rated value":"115.62 A","at 45 °C / rated value":"111.25 A","at 50 °C / rated value":"106.25 A","at 55 °C / rated value":"101.25 A","at 60 °C / rated value":"96.25 A","according to IEC 81346-2":"F","Number Of Modular Width Units":"11","Tripping Characteristic Class":"C","For Testing Equipment / Minimum":"100 V","Position / Of Power Supply Cord":"Either top or bottom","Number Of Poles / With Protection":"4","Product Feature / Touch Protection":"Yes","according to EN 60898 / rated value":"10 kA","Tripping Fault Current / Rated Value":"300 mA","insulation voltage (Ui) / rated value":"440 V","Supply Voltage Frequency / Rated Value":"50 Hz","Surge Voltage Resistance / Rated Value":"4 000 V","according to IEC 60947-2 / rated value":"10 kA","Influence Of The Surrounding Temperature":"Max. 95% humidity","Surge Current Resistance / At (8/20) μS":"3 kA","Type Of Voltage / Of The Operating Voltage":"AC","Product Component / Neutral Conductor Switching":"Yes","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bed74928c9539d6c50f1eb1e06da07d1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=81711&mlfb=5SU1644-1KK82","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1644-1KK82/alternatives.json"},"ai":{"faq":[{"question":"What is 5SU1644-1KK82's maximum and minimum operating temperature?","answer":"Maximum ambient is 75 °C; minimum is -40 °C. The thermal derating curve applies above 30 °C."},{"question":"Where can I buy 5SU1644-1KK82 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will 5SU1644-1KK82 drop into a panel specified around 5SY4310-7CV without rewiring?","answer":"No — 5SY4310-7CV is a miniature circuit breaker (MCB) without residual-current protection. The 5SU1644-1KK82 is an RCBO that combines overcurrent and residual-current protection in one unit, so it requires the neutral conductor to pass through the device. Panel wiring differs."},{"question":"What compliance documentation does Siemens provide for 5SU1644-1KK82?","answer":"The part carries EN 60898 and IEC 60947-2 ratings for breaking capacity, and is halogen-free and silicon-free. Full RoHS, REACH, and CE documentation is standard from Siemens for this SENTRON series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1644-1KK82","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/5SU1644-1KK82 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}}