{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1356-1KK25","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1356-1KK25","canonicalUrl":"https://aoctrl.com/siemens/5SU1356-1KK25","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1356-1KK25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCBO, 5SU1356-1KK25, 1P+N, 25 A (30 °C), 6 kA (EN 60898), 15 kA (IEC 60947-2), Type C, 50 Hz, 2 MW, halogen-free.","salesMarkdown":"The Siemens 5SU1356-1KK25 is a SENTRON RCBO — a combined residual-current and miniature circuit breaker in a single 2-module-width (36 mm) housing, 1P+N pole design with one protected pole. It is rated 25 A at 30 °C with a Type C tripping characteristic (magnetic release at 5–10× In), so it handles motor inrush and moderate inductive loads without nuisance tripping. The breaking capacity is 6 kA per EN 60898 for domestic/commercial coordination, and 15 kA per IEC 60947-2 for industrial panel duty — the higher figure is the one to use when sizing for fault levels in a distribution board with upstream transformer. ## Thermal derating and ambient limits The 25 A rating holds only at 30 °C ambient. At 40 °C it derates to 23.5 A, at 50 °C to 21.75 A, and at 70 °C to 18.25 A. The derating curve is continuous — no step change — so you can interpolate for intermediate temperatures. Snap-on DIN rail mount, 2 MW (36 mm) wide, installation depth 70 mm. Supply can enter from top or bottom — no orientation restriction. The IP20 rating applies only when installed in a distribution board with conductors connected; the device itself is not sealed for washdown.","metaTitle":"Siemens 5SU1356-1KK25 SENTRON RCBO, 25 A, 6 kA, Type C, 1P+N","metaDescription":"Siemens SENTRON RCBO 5SU1356-1KK25: 25 A rated at 30 °C, 6 kA (EN 60898), 15 kA (IEC 60947-2), 1P+N, 2 MW, 50 Hz. In current production. Available 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","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":"284 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","Energy Limitation Class":"3","For Testing Equipment Minimum":"195 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":"$34.29","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=50210&mlfb=5SU1356-1KK25","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1356-1KK25/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1356-1KK25","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/5SU1356-1KK25 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}}