{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1656-6KK20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1656-6KK20","canonicalUrl":"https://aoctrl.com/siemens/5SU1656-6KK20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1656-6KK20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCBO, 1P+N, B-curve, 20 A, 6 kA (EN 60898), 300 mA Type A, 2 MW, IP20.","salesMarkdown":"The Siemens SENTRON 5SU1656-6KK20 is a 1P+N RCBO in a 2-module-wide (36 mm) housing. It combines a B-curve MCB with a Type A residual current device rated at 300 mA. The 20 A rating at 30 °C derates to 18.8 A at 40 °C, 17.4 A at 45 °C, and down to 14.6 A at 70 °C. The 2 MW width (36 mm) means it occupies two standard 18 mm slots — plan the rail fill accordingly, especially when grouping several RCBOs next to a main switch.","metaTitle":"Siemens SENTRON 5SU1656-6KK20 RCBO, B-Curve, 20 A, 6 kA, 300","metaDescription":"Siemens SENTRON 5SU1656-6KK20 RCBO, 1P+N, B-curve, 20 A rated, 6 kA breaking capacity per EN 60898, 300 mA Type A residual current. Active production — sourced 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","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Operating Frequency":"50 Hz","Product Designation":"RCBO","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":"Instantaneous","Residual Current Type":"A","Energy Limitation Class":"3","Weight / With Packaging":"277 g","according to EN 61346-2":"F","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","according to IEC 81346-2":"F","Number Of Modular Width Units":"2","Tripping Characteristic Class":"B","For Testing Equipment / Minimum":"100 V","Position / Of Power Supply Cord":"Either top or bottom","Number Of Poles / With Protection":"1","according to EN 60898 / rated value":"6 kA","Tripping Fault Current / Rated Value":"300 mA","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","Influence Of The Surrounding Temperature":"Max. 95% humidity","Surge Current Resistance / At (8/20) μS":"1 kA","Type Of Voltage / Of The Operating Voltage":"AC","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$102.54","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/76ec0770f32600a1a7064e3984d990be.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=20152&mlfb=5SU1656-6KK20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1656-6KK20/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1656-6KK20","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/5SU1656-6KK20 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}}