{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1356-6KK25","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1356-6KK25","canonicalUrl":"https://aoctrl.com/siemens/5SU1356-6KK25","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1356-6KK25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1356-6KK25 RCBO, 1P+N, 25 A rated at 30 °C, B tripping characteristic, 6 kA breaking capacity per EN 60898, 15 kA per IEC 60947-2, 2 MW units, IP20.","salesMarkdown":"The Siemens 5SU1356-6KK25 is a SENTRON RCBO (residual current operated circuit breaker with integral overcurrent protection) in a 1P+N configuration — one protected pole plus a switched neutral. Rated 25 A at 30 °C with a B tripping characteristic, it trips instantaneously between 3 and 5 times rated current (75–125 A), which makes it the right choice for residential or light commercial final circuits where inrush is low — lighting, socket outlets, small appliances. Temperature derating is built in: at 40 °C it carries 23.5 A, at 50 °C it's 21.75 A, and at 70 °C it's 18.25 A. The 2 MW unit width (36 mm) per DIN 43880 means it occupies two standard 18 mm slots on the rail; at 77 mm depth plus 70 mm installation depth, it clears most domestic and light-industrial enclosures without a deep-can modification. Supply can land top or bottom — no orientation restriction, which simplifies wiring in tight enclosures. IP20 with connected conductors (the distribution board must be installed for the protection to be effective).","metaTitle":"Siemens 5SU1356-6KK25 SENTRON RCBO, 25 A, B Curve, 6 kA","metaDescription":"Siemens 5SU1356-6KK25 SENTRON RCBO, 1P+N, 25 A, B characteristic, 6 kA per EN 60898, 15 kA per IEC 60947-2. 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":"278 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":"B","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":"$41.91 – $65.33","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/2542cf2906d1f4bd316e5c201f264e17.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=456164&mlfb=5SU1356-6KK25","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1356-6KK25/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SU1356-6KK25 and how do I get a price?","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 your required quantity."},{"question":"When sourcing 5SU1356-6KK25, what's the closest functional second-source — 5SL6220-7?","answer":"The 5SL6220-7 is a Siemens SENTRON MCB (no residual current protection), while the 5SU1356-6KK25 is an RCBO with integral RCD. They share the same 2 MW DIN footprint and B-curve characteristic, but the 5SL6220-7 does not provide earth-leakage protection. If your circuit requires combined overcurrent and residual current protection, the 5SU1356-6KK25 is the correct part; a panel wired for an MCB alone would need additional RCD hardware or a different device."},{"question":"What is 5SU1356-6KK25's listed depth (77 mm) on this component line?","answer":"Depth is 77 mm, with an installation depth of 70 mm. That clears most standard shallow enclosures, but verify internal clearance if your can depth is under 80 mm."},{"question":"Will 5SU1356-6KK25 drop into a panel that was specified around 5SL6220-7 without rewiring?","answer":"Mechanically yes — both are 2 MW units (36 mm wide) on the same DIN rail footprint, and both accept top or bottom supply. Electrically, the 5SU1356-6KK25 adds a residual current sensing circuit that the 5SL6220-7 lacks, so you must have a neutral conductor connected and the load neutral must pass through the device. If the existing circuit was wired as a single-pole MCB with no neutral through the device, rewiring is required."},{"question":"What compliance documentation does this brand provide for 5SU1356-6KK25 (RoHS, REACH, UL, IEC)?","answer":"The part is rated per EN 60898 (6 kA) and IEC 60947-2 (15 kA), carries overvoltage category III and pollution degree 2, and is halogen-free and silicon-free. Siemens standard declarations of conformity and material compliance (RoHS/REACH) are available on request through the supply channel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1356-6KK25","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/5SU1356-6KK25 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}}