{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1644-7WK82","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1644-7WK82","canonicalUrl":"https://aoctrl.com/siemens/5SU1644-7WK82","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1644-7WK82","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON selective RCBO, 5SU1644-7WK82, 125 A rated current, 4-pole, Type A, C-curve, 10 kA breaking capacity per EN 60898 and IEC 60947-2.","salesMarkdown":"## Selectivity and derating — the numbers that decide the panel design This is a selective (time-delayed) RCBO, energy limiting class 3. That means it rides through short-duration inrush and lets downstream MCBs trip first — essential for a distribution board feeding multiple sub-circuits where you want only the faulted branch to open. The trade-off is a wider body: 11 width units (198 mm wide, 90 mm tall, 77 mm deep, 70 mm installation depth) on the DIN rail. Mounting position is unrestricted, and the supply can land on either top or bottom terminals. Derate linearly: 115.6 A at 40 °C, 111.3 A at 45 °C, 106.3 A at 50 °C, 101.3 A at 55 °C, and 96.3 A at 60 °C. Overvoltage category III means it's rated for fixed-installation supply-side duty. Terminals accept 6 to 50 mm² solid or stranded copper, which covers the full range for a 125 A feed. Touch protection is built in; IP20 is maintained once the distribution board is installed with conductors connected.","metaTitle":"Siemens SENTRON 5SU1644-7WK82 RCBO, 125A, 4P, Type A, 10kA","metaDescription":"Siemens SENTRON 5SU1644-7WK82 selective RCBO, 125A rated at 30°C, 4-pole, Type A, C-curve, 10kA breaking capacity. Active lifecycle, sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Solid":"6 ... 50 mm²","Width":"198 mm","Height":"90 mm","Stranded":"6 ... 50 mm²","at 30 Cel":"125 A","at 40 Cel":"115.62 A","at 45 Cel":"111.25 A","at 50 Cel":"106.25 A","at 55 Cel":"101.25 A","at 60 Cel":"96.25 A","Halogen-Free":"Yes","Silicon-Free":"Yes","During Storage":"-40 ... +75 °C","Number of poles":"4","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +55 °C","Product designation":"RCBO","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage category":"III","Design of the product":"selective","Energy limiting class":"3","Number of width units":"11","Type of fault current":"A","Number of poles / Note":"4P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SU1","Current / at AC / rated value":"125 A","Tripping characteristic class":"C","acc. to EN 60898 / rated value":"10 kA","For Testing Equipment / Minimum":"100 V","Position / of power supply cord":"Either top or bottom","Number of poles / with protection":"4","acc. to IEC 60947-2 / rated value":"10 kA","Product feature / Touch protection":"Yes","Supply voltage frequency / rated value":"50 Hz","Tripping residual current / rated value":"300 mA","Influence of the surrounding temperature":"Max. 95% humidity","Surge current resistance / at (8/20) μs":"5 kA","Tightening torque / with screw-type terminals":"3 ... 3.5 N·m","Product function / 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=32174&mlfb=5SU1644-7WK82","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1644-7WK82/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SU1644-7WK82 and get a price?","answer":"The 5SU1644-7WK82 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What are the key ratings for the 5SU1644-7WK82?","answer":"Rated 125 A at 30 °C, 4-pole, Type A RCD, C-curve MCB, 10 kA breaking capacity per EN 60898 and IEC 60947-2. Wire range 6 to 50 mm² solid or stranded. Dimensions 198 x 90 x 77 mm, 11 width units on DIN rail."},{"question":"What compliance documentation does Siemens provide for the 5SU1644-7WK82?","answer":"The part carries designations per DIN EN 61346-2 and DIN EN 81346-2 (function F). It is halogen-free and silicon-free. For specific RoHS, REACH, or UL documentation, request the manufacturer's declaration at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1644-7WK82","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/5SU1644-7WK82 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}}