{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9104-1KK40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9104-1KK40","canonicalUrl":"https://aoctrl.com/siemens/5SU9104-1KK40","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9104-1KK40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU9104-1KK40, RCBO, 40 A, 10 kA, C-curve, 1P+N, Type AC, 18 mm wide.","salesMarkdown":"The Siemens 5SU9104-1KK40 is a SENTRON RCBO — a combined RCD and MCB in one 18 mm-wide module, rated 40 A with a C tripping curve and 10 kA breaking capacity per EN 60898 and IEC 60947-2. It protects a single-phase final subcircuit (1P+N) against overload, short-circuit, and earth leakage, sensing AC fault currents only. The 18 mm width (1 MW) means it slots into a standard DIN-rail distribution board without crowding adjacent ways. The 40 A rating is the continuous current at 30 °C ambient; at 40 °C it derates to 37.6 A, at 45 °C to 36.4 A, at 50 °C to 34.8 A, and at 55 °C to 32.4 A (–). The C-curve means magnetic trip occurs at 5–10× In (200–400 A), suited for motor or lighting circuits with moderate inrush. Rated for overvoltage category III. Energy limiting class 3. Touch protection integrated. Halogen-free and silicon-free construction. Storage temperature range -40 to +75 °C. Ambient operating range -25 to +45 °C.","metaTitle":"Siemens 5SU9104-1KK40 SENTRON RCBO, 40 A, 10 kA, Type AC, 1P","metaDescription":"Siemens SENTRON 5SU9104-1KK40 RCBO, 40 A rated, 10 kA breaking capacity per EN 60898, C-curve, 1P+N, Type AC. Current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Solid":"0.75 ... 35 mm²","Width":"18 mm","Height":"125 mm","Maximum":"0.75 W","Stranded":"0.75 ... 35 mm²","at 30 Cel":"40 A","at 40 Cel":"37.6 A","at 45 Cel":"36.4 A","at 50 Cel":"34.8 A","at 55 Cel":"32.4 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":"1","Type of fault current":"AC","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":"40 A","Tripping characteristic class":"C","acc. to EN 60898 / rated value":"10 kA","For Testing Equipment / Minimum":"125 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":"10 mA","Influence of the surrounding temperature":"Max. 95% humidity","Surge current resistance / at (8/20) μs":"1 kA","Tightening torque / with screw-type terminals":"1.2 ... 2 N·m","Product function / neutral conductor switching":"No","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=629223&mlfb=5SU9104-1KK40","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9104-1KK40/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SU9104-1KK40?","answer":"Submit an RFQ through this listing. The part is sourced to order through independent distribution; pricing and stock status are confirmed at quote time."},{"question":"What is the closest functional second-source to 5SU9104-1KK40?","answer":"The 5SY7140-8CC is a comparable Siemens RCBO in the same SENTRON family, also 40 A, 10 kA, C-curve, 1P+N, Type AC, and 18 mm wide. The key difference is the 5SU9 series (5SU9104-1KK40) is an instantaneous RCD type, while the 5SY7 series may have different internal RCD characteristics — verify the specific RCD type (AC vs A vs F) and any time-delay requirements before substituting."},{"question":"Will 5SU9104-1KK40 drop into a panel specified around 5SY7140-8CC without rewiring?","answer":"Form, fit, and function are identical — both are 18 mm wide, 1P+N, 40 A, C-curve, 10 kA RCBOs on DIN rail. No rewiring is needed for the mechanical fit or terminal connections (0.75–35 mm² solid/stranded). However, confirm the RCD type (AC vs A vs F) and any time-delay specification in the original design before swapping."},{"question":"What compliance documentation does Siemens provide for 5SU9104-1KK40?","answer":"The device is designed to EN 60898 and IEC 60947-2. It is halogen-free and silicon-free. Standard Siemens documentation includes a CE declaration of conformity and RoHS/REACH compliance statements available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9104-1KK40","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/5SU9104-1KK40 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}}