{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9304-1KK20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9304-1KK20","canonicalUrl":"https://aoctrl.com/siemens/5SU9304-1KK20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9304-1KK20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCBO, 1P+N, 20 A at 30 °C, C-curve, 10 kA breaking capacity per EN 60898, 1 MW width, 77 mm depth.","salesMarkdown":"The Siemens 5SU9304-1KK20 is a SENTRON RCBO — an RCD-operated circuit breaker combining overcurrent and residual-current protection in a single 1 MW (18 mm) module. Rated 20 A at 30 °C with a C tripping curve, it breaks 10 kA per EN 60898 and IEC 60947-2, covering most residential and light commercial final circuits. The 1P+N design protects the live conductor only; the neutral is switched but not protected. The 20 A rating at 30 °C derates to 18.8 A at 40 °C and 16.2 A at 55 °C — if the distribution board sits in a hot attic or near a boiler, size the upstream MCB accordingly. The C-curve (magnetic trip at 5–10× In) suits motor and lighting loads with moderate inrush; for purely resistive circuits a B-curve would trip faster. The IP20 rating applies only when the distribution board is installed and conductors are connected — not for open-panel use. The 1 MW width (18 mm) means it occupies one slot in a standard modular enclosure. The test button requires a minimum 115 V to function; verify the test circuit voltage before commissioning.","metaTitle":"Siemens 5SU9304-1KK20 SENTRON RCBO, 1P+N, 20 A, C-curve, 10","metaDescription":"Siemens SENTRON 5SU9304-1KK20 RCBO, 1P+N, 20 A rated at 30 °C, C-curve, 10 kA breaking capacity per EN 60898. 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","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","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":"20 A","at 40 °C rated value":"18.8 A","at 45 °C rated value":"18.2 A","at 50 °C rated value":"17.4 A","at 55 °C rated value":"16.2 A","Energy Limitation Class":"3","For Testing Equipment Minimum":"115 V","Number Of Modular Width Units":"1","Position Of Power Supply Cord":"Either top or bottom","Tripping Characteristic Class":"C","Number Of Poles With Protection":"1","according to EN 60898 rated value":"10 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":"10 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,"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=629258&mlfb=5SU9304-1KK20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9304-1KK20/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SU9304-1KK20?","answer":"10 kA per both EN 60898 and IEC 60947-2 at 230/240 V AC."},{"question":"Will 5SU9304-1KK20 drop into a panel designed for 5SY4116-7CV?","answer":"Both are 1 MW wide (18 mm) DIN-rail RCBOs, but the 5SY4116-7CV is a 16 A B-curve device. The 5SU9304-1KK20 is a 20 A C-curve — check the circuit rating and trip coordination before swapping."},{"question":"Where can I buy 5SU9304-1KK20?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Submit a request for current pricing and availability."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9304-1KK20","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/5SU9304-1KK20 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}}