{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9306-1KK32","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9306-1KK32","canonicalUrl":"https://aoctrl.com/siemens/5SU9306-1KK32","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9306-1KK32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCBO, 1P+N, 32 A rated, 30 mA residual, C-curve, 6 kA breaking capacity, 1 MW wide, IP20.","salesMarkdown":"The Siemens 5SU9306-1KK32 is a SENTRON RCBO — an RCD-operated circuit breaker combining overcurrent and residual-current protection in a single 1-module-wide (18 mm) package. For circuits with electronic loads (VFDs, LED drivers, UPS), a type A or F RCBO would be needed; this unit is suited for conventional resistive and inductive loads. The 5SU9306-1KK32 occupies one modular width (18 mm) with a depth of 77 mm and a required installation depth of 70 mm. Supply can enter from either top or bottom, which simplifies busbar routing in crowded enclosures. The IP20 rating is typical for enclosed distribution boards — the protection applies once conductors are connected and the board is closed. ## Thermal derating and environmental limits Rated current is 32 A at 30 °C, but derates to 30.08 A at 40 °C, 29.12 A at 45 °C, 27.84 A at 50 °C, and 25.92 A at 55 °C (–). In a warm cabinet or high-ambient installation, the effective continuous current is lower than the nameplate 32 A — plan the load accordingly. Degree of pollution 2 and overvoltage category III confirm suitability for fixed-installation distribution boards.","metaTitle":"Siemens 5SU9306-1KK32 SENTRON RCBO, 32A 30mA C-curve","metaDescription":"Siemens SENTRON 5SU9306-1KK32 RCBO, 32 A rated, 30 mA residual, 6 kA breaking capacity, C-curve, 1 MW wide. Current lifecycle. Sourced 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","Width":"18 mm","Height":"125 mm","Maximum":"75 °C","Minimum":"-40 °C","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P+N","Number Of Poles":"2","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Operating Frequency":"50/60 Hz","Product Designation":"RCD-operated circuit breaker","at AC / rated value":"32 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":"260 g","according to EN 61346-2":"F","at 30 °C / rated value":"32 A","at 40 °C / rated value":"30.08 A","at 45 °C / rated value":"29.12 A","at 50 °C / rated value":"27.84 A","at 55 °C / rated value":"25.92 A","according to IEC 81346-2":"F","Number Of Modular Width Units":"1","Tripping Characteristic Class":"C","For Testing Equipment / Minimum":"115 V","Position / Of Power Supply Cord":"Either top or bottom","Number Of Poles / With Protection":"1","according to EN 60898 / rated value":"6 kA","Tripping Fault Current / Rated Value":"30 mA","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","Influence Of The Surrounding Temperature":"Max. 95% humidity","Surge Current Resistance / At (8/20) μS":"1 kA","Type Of Voltage / Of The Operating Voltage":"AC","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/afd84d4cd92063d3fe7003ce39deab53.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629281&mlfb=5SU9306-1KK32","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9306-1KK32/alternatives.json"},"ai":{"faq":[{"question":"When sourcing 5SU9306-1KK32, what's the closest functional second-source — 5SY4104-7CV?","answer":"The 5SY4104-7CV is a different product: it is a miniature circuit breaker (MCB) only, without residual-current protection. The 5SU9306-1KK32 is an RCBO that combines overcurrent and RCD protection in one unit. They are not drop-in substitutes; the 5SY series lacks the 30 mA residual trip function."},{"question":"What is 5SU9306-1KK32's listed depth (77 mm) on this component line?","answer":"The depth is 77 mm, with an installation depth of 70 mm."},{"question":"What is 5SU9306-1KK32's listed width (18 mm) on this component line?","answer":"The width is 18 mm, which is one modular unit (1 MW)."},{"question":"Will 5SU9306-1KK32 drop into a panel that was specified around 5SY4104-7CV without rewiring?","answer":"No — the 5SY4104-7CV is an MCB with no residual-current protection. The 5SU9306-1KK32 is an RCBO that requires a neutral connection for the RCD function (1P+N design). The physical footprint is similar (1 MW), but the wiring and circuit design differ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9306-1KK32","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/5SU9306-1KK32 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}}