{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1454-1KK20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1454-1KK20","canonicalUrl":"https://aoctrl.com/siemens/5SU1454-1KK20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1454-1KK20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCBO, 2-pole 1P+N, 20 A rated current at 30 °C, 10 kA breaking capacity per EN 60898, Type AC residual current, tripping characteristic C, 2 modular width units.","salesMarkdown":"It protects a 1P+N circuit at 230/240 V AC, 50 Hz, with a rated current of 20 A at 30 °C ambient — derated to 14.6 A at 70 °C. The Type AC residual current detection handles sinusoidal AC earth faults — the common domestic and light commercial waveform. The instantaneous design means no intentional time delay on the RCD element; it trips within the standard 40 ms window for a residual current at or above the rated sensitivity. The 5SU1454-1KK20 occupies 2 modular width units (36 mm) on a DIN rail, with a depth of 77 mm and an installation depth of 70 mm. It mounts in any position — no derating for orientation — and accepts supply from either top or bottom. The IP20 rating applies once the distribution board is installed with connected conductors; the enclosure itself provides basic finger protection but expects to live inside a closed panel. The 20 A rating at 30 °C is the headline number; the real-world capacity depends on your panel's internal temperature. At 40 °C it carries 18.8 A, at 55 °C it drops to 16.2 A, and at 70 °C the continuous current is 14.6 A. If your distribution board runs hot — say, tightly packed with other breakers or in a warm cabinet — size the load accordingly. The 1P+N configuration (one protected pole, one switched neutral) is standard for single-phase final circuits.","metaTitle":"Siemens SENTRON 5SU1454-1KK20 RCBO, 20 A, 10 kA, Type AC","metaDescription":"Siemens SENTRON 5SU1454-1KK20 RCBO, 2-module, 1P+N, 20 A at 30 °C, 10 kA per EN 60898, Type AC residual current, tripping characteristic C. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Width":"36 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","at 30 Cel":"20 A","at 40 Cel":"18.8 A","at 45 Cel":"18.2 A","at 55 Cel":"16.2 A","at 60 Cel":"16.2 A","at 65 Cel":"15.4 A","at 70 Cel":"14.6 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"2","Type Of Voltage":"AC","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Operating Frequency":"50 Hz","Product Designation":"RCBO","acc. to IEC 81346-2":"F","at AC / rated value":"230/240 V","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","Number Of Poles / Note":"1P+N","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","Weight / With Packaging":"279 g","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","acc. to EN 60898 / rated value":"10 kA","For Testing Equipment / Minimum":"100 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":"100 mA","Supply Voltage Frequency / Rated Value":"50 Hz","Influence Of The Surrounding Temperature":"Max. 95% humidity","Surge Current Resistance / At (8/20) μS":"1 kA","operational current / at AC / rated value":"20 A","Product Function / Neutral Conductor Switching":"Yes","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/243d7e3c1f5811fffed2f1ad7ab56477.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=170375&mlfb=5SU1454-1KK20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1454-1KK20/alternatives.json"},"ai":{"faq":[{"question":"What is 5SU1454-1KK20's breaking capacity?","answer":"It is rated 10 kA per EN 60898 and 20 kA per IEC 60947-2, covering most final-distribution fault levels."},{"question":"Will 5SU1454-1KK20 drop into a panel specified around 5SL6550-7BB?","answer":"Both are 2-module-wide (36 mm) Siemens RCBOs with similar DIN-rail footprint, but the 5SU1454-1KK20 is a Type AC residual-current device while the 5SL6550-7BB is a Type A — verify the RCD type your circuit requires before swapping."},{"question":"Where can I buy 5SU1454-1KK20?","answer":"It is available to order through independent distribution. Submit an RFQ; availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1454-1KK20","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/5SU1454-1KK20 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}}