{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1354-3KK20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1354-3KK20","canonicalUrl":"https://aoctrl.com/siemens/5SU1354-3KK20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1354-3KK20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1354-3KK20, RCBO, 2-pole, 20 A rated, B-curve trip characteristic, Type F residual current, 10 kA / 20 kA breaking capacity, Super resistant K design.","salesMarkdown":"## Siemens 5SU1354-3KK20 — SENTRON RCBO, 20 A, B-Curve, Type F The Siemens 5SU1354-3KK20 is a 2-pole RCBO from the SENTRON series, combining overcurrent protection with residual current detection in a single 36 mm wide, 2-module-width unit. The 20 A rating at 30 °C is the headline figure, but the derating curve matters more for a warm panel: at 40 °C the continuous current drops to 18.8 A, at 50 °C to 17.4 A, and at 70 °C to 14.6 A. If your enclosure ambient runs above 40 °C, the BOM current must be checked against the derated value, not the 30 °C number. The B-curve (3–5× In magnetic trip) is standard for residential and commercial lighting and socket-outlet circuits; it avoids nuisance trips on modest inrush from small motors or capacitive loads. Type F residual current detection is the key differentiator here. It responds to AC, pulsating DC, and mixed-frequency fault currents up to 1 kHz, which covers the leakage profile from single-phase VFDs, washing machine drives, and LED drivers. Standard Type A RCDs can miss high-frequency components; Type F catches them, so this RCBO is the correct choice when the load side includes frequency converters or switched-mode power supplies that generate smooth or high-frequency residual currents. The Super resistant K design indicates enhanced immunity to surge currents and voltage transients, reducing the risk of nuisance tripping in industrial environments with frequent switching events or lightning-induced surges. This is a robustness feature, not a rating change — the breaking capacity and trip curve remain as listed. The 5SU1354-3KK20 snaps onto a 35 mm DIN rail per EN 60715, occupying 2 modular width units (36 mm). It carries the SENTRON brand designation and is classified per IEC 81346-2 and DIN EN 61346-2 as function F (protection device).","metaTitle":"Siemens 5SU1354-3KK20 SENTRON RCBO, 20 A, B-Curve, Type F, 2","metaDescription":"Siemens SENTRON 5SU1354-3KK20 RCBO, 20 A rated, B-curve, Type F residual current, 2-pole, 10 kA (EN 60898) / 20 kA (IEC 60947-2). Current lifecycle stage. 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","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","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","Weight / With Packaging":"283 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":"B","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","insulation voltage (Ui) / rated value":"264 V","Supply Voltage Frequency / Rated Value":"50 Hz","Surge Voltage Resistance / Rated Value":"4 000 V","Influence Of The Surrounding Temperature":"Max. 95% humidity","Surge Current Resistance / At (8/20) μS":"3 kA","Type Of Voltage / Of The Operating Voltage":"AC","Product Component / 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/b0ec5ad3d451bc0f2c3a681137970f61.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1767&mlfb=5SU1354-3KK20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1354-3KK20/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 5SU1354-3KK20?","answer":"The closest peer in the SENTRON RCBO family is 5SU9304-1KK32, which shares the 2-pole, 20 A, B-curve, Type F configuration. The key difference is the breaking capacity: 5SU9304-1KK32 is rated 6 kA per EN 60898 and 10 kA per IEC 60947-2, versus 10 kA / 20 kA on the 5SU1354-3KK20. If the panel's fault level at the point of installation exceeds 6 kA, the 5SU1354-3KK20 is the correct fit. The physical footprint (36 mm width, 2 MW) is identical, so it drops into the same DIN-rail position without rewiring."},{"question":"Where can I buy 5SU1354-3KK20 and how is it quoted?","answer":"The 5SU1354-3KK20 is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — no stock count or price is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1354-3KK20","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/5SU1354-3KK20 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}}