{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1656-0KK25","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1656-0KK25","canonicalUrl":"https://aoctrl.com/siemens/5SU1656-0KK25","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1656-0KK25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1656-0KK25 RCBO, 2-pole 1P+N, Type B, 25 A at 30 °C, 6 kA per EN 60898, 230/240 V AC, 50 Hz.","salesMarkdown":"The Siemens 5SU1656-0KK25 is a 2-pole (1P+N) RCBO from the SENTRON series, combining overcurrent protection and residual current detection in a single 2-module-width unit. In a warm panel — say 40 °C — the continuous current drops to 23.5 A; at 50 °C it's 21.75 A; at 60 °C it's 20.25 A; at 70 °C it's 18.25 A. If your panel runs hot (enclosed DIN-rail enclosures in summer can easily hit 50–60 °C), size the upstream protection and load accordingly. ## Panel integration Mounting position is any — no restriction on upright or sideways.","metaTitle":"Siemens 5SU1656-0KK25 SENTRON RCBO, 25 A, 6 kA, Type B, 2-po","metaDescription":"Siemens SENTRON 5SU1656-0KK25 RCBO, 25 A rated at 30 °C, 6 kA breaking capacity per EN 60898, Type B tripping characteristic, 2-pole 1P+N, 230/240 V AC, 50 Hz. Current lifecycle st","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":"230/240 V","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","Number Of Poles / Note":"1P+N","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","Weight / With Packaging":"277 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":"B","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","Supply Voltage Frequency / Rated Value":"50 Hz","Influence Of The Surrounding Temperature":"Max. 95% humidity","Surge Current Resistance / At (8/20) μS":"1 kA","operational current / at AC / rated value":"25 A","Product Function / Neutral Conductor Switching":"Yes","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/eee135449f21fb5301ba5523b4aa8e63.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=107795&mlfb=5SU1656-0KK25","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1656-0KK25/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 5SU1656-0KK25?","answer":"6 kA per EN 60898 and 15 kA per IEC 60947-2. The higher 15 kA rating applies when the device is used as an industrial circuit-breaker per IEC 60947-2, giving extra fault-current headroom in sub-distribution boards."},{"question":"What is the difference between 5SU1656-0KK25 and 5SL6550-7BB?","answer":"The 5SL6550-7BB is a different SENTRON variant — it's a 2-pole RCBO but with a C characteristic and a different residual current rating. The 5SU1656-0KK25 is Type B (instantaneous at 3–5× In) and Type AC residual; the 5SL6550-7BB is Type C (instantaneous at 5–10× In). They are not drop-in substitutes without checking the circuit's inrush and fault-current profile."},{"question":"Where can I buy 5SU1656-0KK25?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1656-0KK25","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/5SU1656-0KK25 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}}