{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9354-8KK25","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9354-8KK25","canonicalUrl":"https://aoctrl.com/siemens/5SU9354-8KK25","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9354-8KK25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU9 series, RCD-operated circuit breaker, 25 A, 10 kA, Type A, D-curve, 2-pole (1P+N), IP20.","salesMarkdown":"## What this RCD-operated circuit breaker does The Siemens 5SU9354-8KK25 is a 2-pole (1P+N) RCD-operated circuit breaker from the SENTRON 5SU9 series, combining overcurrent protection and residual-current detection in a single 36 mm-wide module. The Type A fault-current detection handles pulsating DC residual currents — common on single-phase rectified loads like VFDs and switched-mode supplies — so it's suited for mixed-load panels where standard AC-only RCDs would miss a fault. The energy limiting class is 3, so it lets through less let-through energy than a Class 1 or 2 device — that matters when you want to protect downstream wiring and connected equipment during a short-circuit event. Terminals accept solid or stranded conductors from 0.75 mm² up to 35 mm² — that covers everything from 1.5 mm² lighting circuits up to 10 mm² feeder tails. At 40 °C it derates to 23.5 A, at 45 °C to 22.75 A, and at 50 °C to 21.75 A.","metaTitle":"Siemens 5SU9354-8KK25 SENTRON RCD Circuit Breaker, 25 A, 10","metaDescription":"Siemens SENTRON 5SU9354-8KK25 RCD-operated circuit breaker, 25 A rated, 10 kA breaking capacity (EN 60898), Type A, D-curve, 2-pole 1P+N. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Solid":"0.75 ... 35 mm²","Width":"36 mm","Height":"90 mm","Maximum":"1.5 W","Stranded":"0.75 ... 35 mm²","at 30 Cel":"25 A","at 40 Cel":"23.5 A","at 45 Cel":"22.75 A","at 50 Cel":"21.75 A","at 55 Cel":"20.25 A","Halogen-Free":"Yes","Silicon-Free":"Yes","During Storage":"-40 ... +75 °C","Number of poles":"2","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +45 °C","Product designation":"RCD-operated circuit breaker","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage category":"III","Design of the product":"Instantaneous","Energy limiting class":"3","Number of width units":"2","Type of fault current":"A","Number of poles / Note":"1P+N","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SU9","Current / at AC / rated value":"25 A","Tripping characteristic class":"D","acc. to EN 60898 / rated value":"10 kA","For Testing Equipment / Minimum":"195 V","Position / of power supply cord":"Either top or bottom","Number of poles / with protection":"1","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":"30 mA","Influence of the surrounding temperature":"Max. 95% humidity","Surge current resistance / at (8/20) μs":"1 kA","Tightening torque / with screw-type terminals":"2.5 ... 3 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/79f6610cfebb3bc98ed563eb1e55c601.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629333&mlfb=5SU9354-8KK25","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9354-8KK25/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SU9354-8KK25 and how do I get a price?","answer":"The part is sourced to order against an RFQ through independent distribution. Submit an RFQ to confirm availability and current pricing."},{"question":"What is the difference between 5SU9354-8KK25 and 5SU9354-7KK16?","answer":"Both are 25 A Type A D-curve RCD breakers from the same 5SU9 series. The difference is in the tripping characteristic: the -8KK25 uses a D curve (10-20× In), while the -7KK16 uses a B curve (3-5× In). The D curve is the correct choice for motor and transformer loads; the B curve would nuisance-trip on the same inrush."},{"question":"What compliance documentation is available for 5SU9354-8KK25?","answer":"The part carries EN 60898 and IEC 60947-2 ratings, overvoltage category III, and IP20 protection. It is halogen-free and silicon-free. RoHS/REACH declarations are typically included with the manufacturer's documentation pack."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9354-8KK25","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/5SU9354-8KK25 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}}