{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1656-7KK20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1656-7KK20","canonicalUrl":"https://aoctrl.com/siemens/5SU1656-7KK20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1656-7KK20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCBO, 5SU1656-7KK20, 20 A at 30 °C, Type C, 6 kA per EN 60898, 1P+N, 2-module width, instantaneous design.","salesMarkdown":"Supply can enter from either top or bottom, and the RCBO is rated for 230/240 V AC at 50 Hz, with an insulation voltage (Ui) of 264 V and a surge voltage resistance of 4 000 V — suitable for overvoltage category III environments with pollution degree 2. ## Derating and ambient temperature Above that, the device derates linearly: 18.8 A at 40 °C, 18.2 A at 45 °C, 17.4 A at 50 °C, 16.2 A at 55 °C and 60 °C, 15.4 A at 65 °C, and 14.6 A at 70 °C. If the panel runs warm — common in crowded enclosures or near heat sources — size the upstream protection accordingly. ## Physical fit and compliance Energy limitation class 3 means the let-through energy is low, reducing stress on downstream wiring and components during a fault.","metaTitle":"Siemens 5SU1656-7KK20 SENTRON RCBO, 20 A, 6 kA, Type C, 2-po","metaDescription":"Siemens 5SU1656-7KK20 SENTRON RCBO, 20 A rated at 30 °C, 6 kA breaking capacity per EN 60898, Type C characteristic, 2-pole (1P+N), 36 mm wide. 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","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":"276 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":"100 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/05ae928197cb00b52c2b950d463d20e9.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=323127&mlfb=5SU1656-7KK20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1656-7KK20/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SU1656-7KK20?","answer":"Pricing and availability are confirmed at quote time against an RFQ through independent distribution. Submit a request for a current quote."},{"question":"What is 5SU1656-7KK20's listed depth?","answer":"The listed depth is 77 mm, with an installation depth of 70 mm."},{"question":"What is 5SU1656-7KK20's listed width?","answer":"The width is 36 mm, which corresponds to 2 modular width units on a DIN rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1656-7KK20","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/5SU1656-7KK20 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}}