{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1356-7KK20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1356-7KK20","canonicalUrl":"https://aoctrl.com/siemens/5SU1356-7KK20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1356-7KK20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1356-7KK20 RCBO, 1P+N, 20 A at 30 °C, Type C tripping characteristic, 6 kA (EN 60898) / 15 kA (IEC 60947-2), 2 MW, IP20, current lifecycle.","salesMarkdown":"It protects a single-phase final subcircuit against earth leakage and overload/short-circuit in one device, saving a DIN-rail position compared to separate RCCB and MCB. Rated 20 A at 30 °C ambient with a Type C tripping characteristic (magnetic release at 5–10× In), it handles moderate inrush from motorized loads like small pumps or compressors. ## Derating and installation constraints The 20 A rating derates with rising ambient temperature: 18.8 A at 40 °C, 17.4 A at 50 °C, 15.4 A at 65 °C, and 14.6 A at 70 °C. In a warm enclosure, size the upstream protection and load accordingly — the 70 °C figure is the practical limit for a crowded panel. The energy limitation class is 3, meaning it limits let-through energy under fault conditions.","metaTitle":"Siemens 5SU1356-7KK20 SENTRON RCBO, 20 A, 6 kA, Type C, 1P+N","metaDescription":"Siemens 5SU1356-7KK20 SENTRON RCBO, 20 A rated at 30 °C, 6 kA per EN 60898, 15 kA per IEC 60947-2, Type C trip curve, 1P+N, 2 MW. Active production. 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","Design Of Pole":"1P+N","Number Of Poles":"2","lifecycle_stage":"current","Mounting Position":"any","at AC rated value":"230/240 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","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":"289 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","Energy Limitation Class":"3","For Testing Equipment Minimum":"195 V","Number Of Modular Width Units":"2","Position Of Power Supply Cord":"Either top or bottom","Tripping Characteristic Class":"C","Number Of Poles With Protection":"1","according to EN 60898 rated value":"6 kA","insulation voltage (Ui) rated value":"264 V","Supply Voltage Frequency Rated Value":"50 Hz","Surge Voltage Resistance Rated Value":"4 000 V","according to IEC 60947-2 rated value":"15 kA","Surge Current Resistance At (8/20) μS":"1 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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3dc4f772af97c91db6d98bd992b56d89.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=91209&mlfb=5SU1356-7KK20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1356-7KK20/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SU1356-7KK20 and get a price?","answer":"This RCBO is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 5SU1356-7KK20?","answer":"It is rated 6 kA according to EN 60898 and 15 kA according to IEC 60947-2 — the higher figure applies in industrial panels where fault current may exceed domestic levels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1356-7KK20","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/5SU1356-7KK20 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}}