{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9404-0KK32","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9404-0KK32","canonicalUrl":"https://aoctrl.com/siemens/5SU9404-0KK32","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9404-0KK32","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU9 series, RCD-operated circuit breaker (RCBO), 32 A rated AC current, B tripping characteristic, 10 kA breaking capacity, 1P+N, 18 mm width.","salesMarkdown":"The Siemens SENTRON 5SU9404-0KK32 is an RCD-operated circuit breaker — an RCBO — combining overcurrent protection and residual current detection in a single 18 mm wide module. The 1P+N configuration switches the live pole and provides a switched neutral, which is common in single-phase final circuits across European and Middle Eastern markets. ## Thermal derating and conductor sizing At 40 °C it derates to 30.08 A, at 45 °C to 29.12 A, at 50 °C to 27.84 A, and at 55 °C to 25.92 A. The terminals accept solid or stranded conductors from 0.75 mm² up to 35 mm², which covers everything from 1.5 mm² lighting circuits up to 10 mm² feeder tails. The installation depth is 70 mm, and the overall depth is 77 mm, so it fits standard 18 mm DIN-rail enclosures with a 70 mm deep back box. Mounting position is unrestricted, and the supply can enter from either top or bottom. Rated breaking capacity is certified to EN 60898 (10 kA) and IEC 60947-2 (10 kA). Touch protection is provided on the terminals. The product is assigned function code F per DIN EN 61346-2 and DIN EN 81346-2, which classifies it as a protective device.","metaTitle":"Siemens 5SU9404-0KK32 SENTRON RCD Circuit Breaker, 32 A, B C","metaDescription":"Siemens SENTRON 5SU9404-0KK32 RCD-operated circuit breaker, 32 A rated at 30 °C, B tripping characteristic, 10 kA breaking capacity per EN 60898. 1P+N, 18 mm wide. Current producti","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","title":"5SU9404-0KK32","Height":"125 mm","Maximum":"0.75 W","Stranded":"0.75 ... 35 mm²","at 30 Cel":"32 A","at 40 Cel":"30.08 A","at 45 Cel":"29.12 A","at 50 Cel":"27.84 A","at 55 Cel":"25.92 A","description":"RCBO, 10 kA, 1P+N, Type AC, 100 mA, B char., In: 32 A, Un AC: 230 V, pigtail 600 mm, solid N","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":"32 A","Tripping characteristic class":"B","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":"100 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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/88b81f6c7359131daf3c6d1875fcf2ed.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629410&mlfb=5SU9404-0KK32"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9404-0KK32","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/5SU9404-0KK32 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}}