{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9304-7KX20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9304-7KX20","canonicalUrl":"https://aoctrl.com/siemens/5SU9304-7KX20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9304-7KX20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU9304-7KX20, RCBO, 2-pole 1P+N, 20 A, C-curve, Type A, 10 kA, 18 mm width, IP20.","salesMarkdown":"The Siemens 5SU9304-7KX20 is a SENTRON RCBO — an RCD-operated circuit breaker combining overcurrent protection and residual current detection in a single 18 mm wide module. It's rated 20 A at 30 °C with a C tripping characteristic, Type A fault current sensitivity, and a 10 kA breaking capacity certified to both EN 60898 and IEC 60947-2. That dual certification means it's accepted across residential, commercial, and light industrial panel builds where the local standard may reference either norm. Type A detection handles pulsating DC residual currents up to 6 mA superimposed on AC — common from rectified loads like LED drivers, switched-mode power supplies, and variable-speed drives. If your panel feeds any electronics, Type A is the correct choice over Type AC. Above that, the continuous current must be derated: 19 A at 40 °C, 18.2 A at 45 °C, 17.6 A at 50 °C, and 17.2 A at 55 °C. If the panel interior runs hot — and most enclosed panels do — size the load circuit for the derated value at your expected ambient, not the headline 20 A. The 18 mm width (1 width unit) fits standard DIN-rail enclosures. Mounting position is any orientation, so it works in vertical or horizontal busbar arrangements without derating. Rated for overvoltage category III, protection class IP20 (IP40 with connected conductors in a distribution board), halogen-free and silicon-free construction. Touch protection is included on the terminals.","metaTitle":"Siemens 5SU9304-7KX20 SENTRON RCBO, 20 A, Type A, 10 kA","metaDescription":"Siemens 5SU9304-7KX20 SENTRON RCBO, 20 A rated, Type A fault current, 10 kA breaking capacity per EN 60898 & IEC 60947-2. Current production. Quoted 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":"18 mm","Height":"125 mm","Maximum":"4.36 W","Stranded":"0.75 ... 35 mm²","at 30 Cel":"20 A","at 40 Cel":"19 A","at 45 Cel":"18.2 A","at 50 Cel":"17.6 A","at 55 Cel":"17.2 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Wertebereich":"-25 ... +45 °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":"-40 ... +75 °C","Product designation":"RCD-operated circuit breaker","Protection class IP":"IP20, if the distribution board is installed, with connected conductors, IP40 is achieved","Overvoltage category":"III","Design of the product":"Instantaneous","Energy limiting class":"3","Number of width units":"1","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":"20 A","Tripping characteristic class":"C","acc. to EN 60898 / rated value":"10 kA","For Testing Equipment / Minimum":"93.5 V","Position / of power supply cord":"from below","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":"3 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":"https://cdn.aoctrl.com/afd84d4cd92063d3fe7003ce39deab53.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=558611&mlfb=5SU9304-7KX20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9304-7KX20/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SU9304-7KX20?","answer":"10 kA rated breaking capacity, certified to both EN 60898 and IEC 60947-2."},{"question":"What conductor sizes does 5SU9304-7KX20 accept?","answer":"Solid or stranded conductors from 0.75 to 35 mm²."},{"question":"Where can I buy 5SU9304-7KX20 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation is available for 5SU9304-7KX20?","answer":"The part carries dual certification to EN 60898 and IEC 60947-2 for breaking capacity, is halogen-free and silicon-free, and is rated overvoltage category III."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9304-7KX20","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/5SU9304-7KX20 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}}