{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9406-0KK40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9406-0KK40","canonicalUrl":"https://aoctrl.com/siemens/5SU9406-0KK40","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9406-0KK40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU9406-0KK40, RCBO (RCD-operated circuit breaker), 1P+N, B-curve, 40 A rated at 30 °C, 6 kA breaking capacity, 1 MW width.","salesMarkdown":"The Siemens 5SU9406-0KK40 is a SENTRON RCBO — an RCD-operated circuit breaker that combines overcurrent and residual-current protection in a single 18 mm wide module. It's a 1P+N design (switches the line, monitors both line and neutral) with B-curve tripping characteristic, rated 40 A at 30 °C ambient. The 4 kV surge voltage resistance and 264 V insulation voltage give it solid headroom for 230/240 V AC supplies at 50/60 Hz. Rated current derates with ambient temperature: 37.6 A at 40 °C, 36.4 A at 45 °C, 34.8 A at 50 °C, and 32.4 A at 55 °C. That matters if the board sits in a hot enclosure or near other heat-generating devices. Snaps onto standard DIN rail, 18 mm wide (1 MW), 77 mm deep, 125 mm tall. Installation depth is 70 mm. IP20 rated once the distribution board is installed with conductors connected. Halogen-free and silicon-free construction, which matters for enclosed assemblies where off-gassing or outgassing could affect contacts or electronics.","metaTitle":"Siemens 5SU9406-0KK40 SENTRON RCBO, B-Curve 40A, 6kA, 1P+N","metaDescription":"Siemens SENTRON 5SU9406-0KK40 RCBO, 40A rated, B-curve, 6kA breaking capacity per EN 60898/IEC 60947-2, 1 MW wide. Active production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Width":"18 mm","title":"5SU9406-0KK40","Height":"125 mm","Maximum":"75 °C","Minimum":"-40 °C","description":"RCBO, 6 kA, 1P+N, Type AC, 100 mA, B char., In: 40 A, Un AC: 230 V, pigtail 600 mm, solid N","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P+N","Number Of Poles":"2","lifecycle_stage":"current","Mounting Position":"any","at AC rated value":"230/240 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Operating Frequency":"50/60 Hz","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","Weight With Packaging":"260 g","at 30 °C rated value":"40 A","at 40 °C rated value":"37.6 A","at 45 °C rated value":"36.4 A","at 50 °C rated value":"34.8 A","at 55 °C rated value":"32.4 A","Energy Limitation Class":"3","For Testing Equipment Minimum":"125 V","Number Of Modular Width Units":"1","Position Of Power Supply Cord":"Either top or bottom","Tripping Characteristic Class":"B","Number Of Poles With Protection":"1","according to EN 60898 rated value":"6 kA","insulation voltage (Ui) rated value":"264 V","Supply Voltage Frequency Rated Value":"50 Hz","Surge Voltage Resistance Rated Value":"4 000 V","according to IEC 60947-2 rated value":"6 kA","Surge Current Resistance At (8/20) μS":"1 kA","Influence Of The Surrounding Temperature":"Max. 95% humidity","Type Of Voltage Of The Operating Voltage":"AC","Mechanical Service Life (Operating Cycles) Typical":"10 000","for rated value of the current at AC in hot operating state per pole":"0.75 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c15bac22c25f66a5393ba89f4ae7f287.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629424&mlfb=5SU9406-0KK40"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SU9406-0KK40?","answer":"6 kA per both EN 60898 and IEC 60947-2, at 230/240 V AC."},{"question":"Where can I buy 5SU9406-0KK40 and get current pricing?","answer":"Sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation is available for 5SU9406-0KK40?","answer":"The part carries EN 60898 and IEC 60947-2 ratings. It is halogen-free and silicon-free. For specific RoHS/REACH/UL declarations, request the manufacturer's compliance documentation at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9406-0KK40","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/5SU9406-0KK40 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}