{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1656-1KK25","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1656-1KK25","canonicalUrl":"https://aoctrl.com/siemens/5SU1656-1KK25","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1656-1KK25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCBO, 25 A, 6 kA (EN 60898) / 15 kA (IEC 60947-2), Type AC, 2-pole, 2 MW, IP20, current production.","salesMarkdown":"The 5SU1656-1KK25: Rated breaking capacity is 6 kA per EN 60898 and 15 kA per IEC 60947-2. The higher IEC figure matters when the RCBO sits in an industrial panel with upstream fault current potential above 6 kA — the 15 kA rating gives headroom for selective coordination without cascading upstream. ## Temperature derating — what the 25 A rating actually delivers At 40 °C it derates to 23.5 A, at 50 °C to 21.75 A, and at 70 °C to 18.25 A. For a panel running warm — say 45 °C internal — the usable continuous current is 22.75 A, not the nameplate 25 A. Factor this into the load calculation. ## Mounting and installation notes IP20 applies once the distribution board is installed with conductors connected. Touch protection is built in.","metaTitle":"Siemens 5SU1656-1KK25 SENTRON RCBO, 25 A, 6 kA, Type AC, 2-p","metaDescription":"Siemens SENTRON 5SU1656-1KK25 RCBO, 25 A rated, 6 kA breaking capacity (EN 60898), Type AC residual current, 2-pole, 2 MW. Current production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"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","acc. to IEC 81346-2":"F","at AC / rated value":"25 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":"AC","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","Weight / With Packaging":"276 g","at 30 °C / rated value":"25 A","at 40 °C / rated value":"23.5 A","at 45 °C / rated value":"22.75 A","at 50 °C / rated value":"21.75 A","at 55 °C / rated value":"20.25 A","at 60 °C / rated value":"20.25 A","at 65 °C / rated value":"19.25 A","at 70 °C / rated value":"18.25 A","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","acc. to EN 60898 / rated value":"6 kA","For Testing Equipment / Minimum":"100 V","Position / Of Power Supply Cord":"Either top or bottom","Number Of Poles / With Protection":"1","acc. to IEC 60947-2 / rated value":"15 kA","Product Feature / Touch Protection":"Yes","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","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":"$34.29","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d95262d9cb8b58e43b72b9b186fc9994.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=186154&mlfb=5SU1656-1KK25","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1656-1KK25/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SU1656-1KK25?","answer":"6 kA per EN 60898 and 15 kA per IEC 60947-2, giving flexibility for both residential and industrial panel coordination."},{"question":"What is the temperature derating for this RCBO?","answer":"At 40 °C the rated current drops to 23.5 A, at 50 °C to 21.75 A, and at 70 °C to 18.25 A. Always check the ambient temperature inside the enclosure."},{"question":"Where can I buy 5SU1656-1KK25 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock or price figures are published here."},{"question":"What compliance documentation is available for 5SU1656-1KK25?","answer":"The part is halogen-free and silicon-free, rated for overvoltage category III, pollution degree 2, and carries approvals per EN 60898 and IEC 60947-2. RoHS and REACH documentation is typically provided by the manufacturer upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1656-1KK25","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/5SU1656-1KK25 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}}