{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1346-6FP20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1346-6FP20","canonicalUrl":"https://aoctrl.com/siemens/5SU1346-6FP20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1346-6FP20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1346-6FP20 RCBO, 4-pole, Type B, 20 A (30 °C), 6 kA, 400 V AC, 50 Hz, 4 MW units, IP20.","salesMarkdown":"It's a Type B (instantaneous) device — the magnetic trip operates without intentional delay, so it clears high-impedance faults fast, but selectivity with downstream MCBs needs careful coordination. Rated 20 A at 30 °C ambient on a 400 V AC 50 Hz system, it carries a 6 kA breaking capacity certified to both EN 60898 and IEC 60947-2. ## Temperature derating — the real current rating on your panel Inside a warm enclosure — say 50 °C — the continuous current drops to 18.9 A. At 60 °C it's 18.4 A, and at 70 °C it's 17.8 A. If your panel runs hot, size the upstream protection and load accordingly; the derating curve is linear enough to interpolate between the given points. Depth is 72 mm, installation depth 70 mm — check your enclosure depth if you're retrofitting into a shallow board. IP20 only when the distribution board is installed with conductors connected — not a standalone IP rating. The test button needs at least 195 V to operate.","metaTitle":"Siemens 5SU1346-6FP20 SENTRON RCBO, 4P, Type B, 20 A, 6 kA","metaDescription":"Siemens SENTRON 5SU1346-6FP20 RCBO, 4-pole, Type B tripping characteristic, 20 A rated at 30 °C, 6 kA breaking capacity per EN 60898. 4 MW units, IP20. Active production. Quoted to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"72 mm","Width":"72 mm","title":"5SU1346-6FP20","Height":"85 mm","Maximum":"70 °C","Minimum":"-40 °C","description":"RCBO, 6 kA, 4P Type A, 30 mA, B-Char, In: 20A Un: 400V Energy limiting class 1: check for normative use limitations","Halogen-Free":"No","Design Of Pole":"4P","Number Of Poles":"4","lifecycle_stage":"current","Mounting Position":"any","at AC rated value":"400 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Operating Frequency":"50 Hz","Product Designation":"RCBO","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Instantaneous","Weight With Packaging":"500 g","at 30 °C rated value":"20 A","at 40 °C rated value":"19.5 A","at 45 °C rated value":"19.2 A","at 50 °C rated value":"18.9 A","at 55 °C rated value":"18.7 A","at 60 °C rated value":"18.4 A","at 70 °C rated value":"17.8 A","Energy Limitation Class":"1","For Testing Equipment Minimum":"195 V","Number Of Modular Width Units":"4","Position Of Power Supply Cord":"Either top or bottom","Tripping Characteristic Class":"B","Number Of Poles With Protection":"4","according to EN 60898 rated value":"6 kA","insulation voltage (Ui) rated value":"500 V","Supply Voltage Frequency Rated Value":"50 Hz","Surge Voltage Resistance Rated Value":"4 000 V","according to IEC 60947-2 rated value":"6 kA","Surge Current Resistance At (8/20) μS":"0.25 kA","Influence Of The Surrounding Temperature":"Max. 95% humidity","Type Of Voltage Of The Operating Voltage":"AC","Mechanical Service Life (Operating Cycles) Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6e2e6ddacb60a42cb10c149ae3a30b8e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1438055&mlfb=5SU1346-6FP20"},"ai":{"faq":[{"question":"What is the closest functional second-source for 5SU1346-6FP20?","answer":"The Siemens 5SU9354-7KK16 is a 4-pole RCBO in the same SENTRON family, but it carries a Type C characteristic and a different current rating — verify your selectivity and load requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1346-6FP20","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/5SU1346-6FP20 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}}