{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1354-4KK20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1354-4KK20","canonicalUrl":"https://aoctrl.com/siemens/5SU1354-4KK20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1354-4KK20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1354-4KK20, RCBO, 2-pole 1P+N, Type F residual current, 20 A rated, C tripping characteristic, 10 kA (EN 60898) / 20 kA (IEC 60947-2).","salesMarkdown":"The Siemens 5SU1354-4KK20 is a SENTRON RCBO combining overcurrent protection and residual current detection in a single 2-module-width (36 mm) package. It's a 1P+N device with Type F residual current sensitivity — meaning it's designed for circuits where variable-speed drives or other frequency converters might generate smooth DC fault currents or mixed-frequency residuals that a standard Type A would miss. That dual rating gives you flexibility in specifying for different national standards or fault-level requirements at the panel design stage. Full rated current of 20 A holds only up to 30 °C ambient. At 40 °C it's 18.8 A, at 50 °C it's 17.4 A, and at 70 °C it drops to 14.6 A. If this RCBO sits in a crowded enclosure with other heat-generating devices, check the actual ambient around the device — the published derating curve lets you calculate whether you need to upsize the breaker or improve ventilation. The IP20 rating applies only when the distribution board is installed and conductors are connected — it's not a standalone ingress protection figure for exposed mounting. The device is classified as energy limitation class 3, which governs let-through energy during a fault — relevant for coordinating with downstream equipment.","metaTitle":"Siemens 5SU1354-4KK20 SENTRON RCBO, Type F, 20 A, C Curve","metaDescription":"Siemens 5SU1354-4KK20 SENTRON RCBO, 2-pole 1P+N, Type F residual current, 20 A rated, C tripping characteristic, 10 kA (EN 60898) / 20 kA (IEC 60947-2). Active production, sourced","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Width":"36 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Halogen-Free":"Yes","Silicon-Free":"Yes","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":"RCBO","acc. to IEC 81346-2":"F","at AC / rated value":"20 A","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Super resistant K","Residual Current Type":"F","Number Of Poles / Note":"1P+N","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","Weight / With Packaging":"285 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","at 60 °C / rated value":"16.2 A","at 65 °C / rated value":"15.4 A","at 70 °C / rated value":"14.6 A","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","acc. to EN 60898 / rated value":"10 kA","For Testing Equipment / Minimum":"195 V","Position / Of Power Supply Cord":"Either top or bottom","Number Of Poles / With Protection":"1","acc. to IEC 60947-2 / rated value":"20 kA","Product Feature / Touch Protection":"Yes","Tripping Fault Current / Rated Value":"30 mA","Supply Voltage Frequency / Rated Value":"50 Hz","Influence Of The Surrounding Temperature":"Max. 95% humidity","Surge Current Resistance / At (8/20) μS":"3 kA","Product Function / Neutral Conductor Switching":"Yes","Mechanical Service Life (Operating Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bd7ce6ed62fa654ef4769c104d5cc2b6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=198614&mlfb=5SU1354-4KK20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1354-4KK20/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between 5SU1354-4KK20 and the 5SL6550-7BB?","answer":"The 5SL6550-7BB is a different class of device — a miniature circuit breaker (MCB) without residual current protection. The 5SU1354-4KK20 is an RCBO combining overcurrent and residual current (Type F) in one unit. They are not drop-in replacements; the 5SL6550-7BB cannot substitute where residual current detection is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1354-4KK20","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/5SU1354-4KK20 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}}