{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1656-6KK16","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1656-6KK16","canonicalUrl":"https://aoctrl.com/siemens/5SU1656-6KK16","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1656-6KK16","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1656-6KK16 RCBO, 2-pole, 16 A rated, 300 mA residual current, Type A, 6 kA breaking capacity per EN 60898.","salesMarkdown":"The Siemens 5SU1656-6KK16 is a 2-pole residual current circuit breaker with overcurrent protection (RCBO) from the SENTRON family, combining a 16 A rated current (at 30 °C) with a 300 mA residual current trip, Type A, in a single 36 mm wide module (2 modular width units). The 16 A rating is the thermal current at 30 °C ambient; at 40 °C it derates to 15.2 A, at 50 °C to 14.4 A, and at 70 °C to 12.32 A — so if the panel runs warm, size the load against the derated figure, not the 30 °C headline. The 300 mA residual current sensitivity (Type A) catches pulsating DC fault currents as well as sinusoidal AC, which covers most modern electronic loads — VFDs, LED drivers, switched-mode supplies — without nuisance tripping on the DC component. Halogen-free and silicon-free construction means it meets the material restrictions common in rail, marine, and high-reliability industrial specs — no halogenated flame retardants that could produce corrosive smoke under fault. ## Temperature derating in practice The RCBO carries a full derating curve from 30 °C to 70 °C in 5 °C steps. At 55 °C it is rated 13.92 A, at 60 °C 13.6 A, at 65 °C 12.96 A. If the panel ambient exceeds 40 °C, use the 40 °C column (15.2 A) as the design limit — the device will trip thermally below its 30 °C rating.","metaTitle":"Siemens 5SU1656-6KK16 SENTRON RCBO, 2-pole, 16 A, 300 mA, Ty","metaDescription":"Siemens 5SU1656-6KK16 SENTRON RCBO, 2-pole, 16 A rated, 300 mA residual current, Type A, 6 kA breaking capacity per EN 60898. 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","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":"16 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":"270 g","according to EN 61346-2":"F","at 30 °C / rated value":"16 A","at 40 °C / rated value":"15.2 A","at 45 °C / rated value":"14.88 A","at 50 °C / rated value":"14.4 A","at 55 °C / rated value":"13.92 A","at 60 °C / rated value":"13.6 A","at 65 °C / rated value":"12.96 A","at 70 °C / rated value":"12.32 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","Product Feature / Touch Protection":"Yes","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","Product Component / Neutral Conductor Switching":"Yes","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$113.01","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/efda9ae56cc8f41efb414f493b0f5ded.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=370583&mlfb=5SU1656-6KK16","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1656-6KK16/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of the 5SU1656-6KK16?","answer":"Overall depth is 77 mm; installation depth (from DIN rail surface to the back of the housing) is 70 mm."},{"question":"What is the width of the 5SU1656-6KK16?","answer":"Width is 36 mm, which corresponds to 2 modular width units on standard DIN-rail distribution boards."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1656-6KK16","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/5SU1656-6KK16 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}}