{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9356-1KK50","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9356-1KK50","canonicalUrl":"https://aoctrl.com/siemens/5SU9356-1KK50","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9356-1KK50","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCBO, 1P+N, 50 A, C-curve, 6 kA per EN 60898 / 10 kA per IEC 60947-2, instantaneous type, 2 MW, IP20.","salesMarkdown":"The Siemens 5SU9356-1KK50 is a SENTRON RCBO — an RCD-operated circuit breaker that combines overcurrent protection and residual-current detection in a single 2-module-width (36 mm) package. It's a 1P+N design, meaning it switches and protects the live conductor only, with a switched neutral that follows the pole. This RCBO carries two breaking-capacity ratings: 6 kA according to EN 60898 and 10 kA according to IEC 60947-2. The EN 60898 figure is the standard for household and similar installations — it's the rating that applies when the device is used as a domestic-grade MCB/RCD combo. The IEC 60947-2 rating is the industrial equivalent, tested to a higher standard for fault-clearing in industrial panels. If your panel spec calls out 10 kA SCCR at the branch, the 60947-2 number is the one that satisfies it. The 6 kA rating is fine for residential or light commercial where the prospective fault current is lower. ## Temperature derating — don't ignore it At 40 °C it's 47.5 A; at 45 °C it's 46.5 A; at 50 °C it's 45 A; at 55 °C it's 43.5 A. A 50 A breaker in a 50 °C enclosure is really a 45 A device. Factor that into your load calculation or you'll get nuisance trips on a hot day. Snaps onto standard DIN rail. Supply can come from either top or bottom — no forced orientation. Mounting position is any, so you can lay it sideways in a shallow enclosure if needed. IP20 with the distribution board installed and conductors connected — that's touch-finger protection only, not for wet or dusty locations.","metaTitle":"Siemens 5SU9356-1KK50 SENTRON RCBO, 50A C-Curve, 6kA/10kA","metaDescription":"Siemens 5SU9356-1KK50 SENTRON RCBO, 1P+N, 50A rated, C-curve, 6kA (EN 60898) / 10kA (IEC 60947-2) breaking capacity. Current production. Quoted 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":"50/60 Hz","Product Designation":"RCD-operated circuit breaker","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Instantaneous","Weight With Packaging":"280 g","at 30 °C rated value":"50 A","at 40 °C rated value":"47.5 A","at 45 °C rated value":"46.5 A","at 50 °C rated value":"45 A","at 55 °C rated value":"43.5 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":"10 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","for rated value of the current at AC in hot operating state per pole":"0.75 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/79f6610cfebb3bc98ed563eb1e55c601.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629363&mlfb=5SU9356-1KK50","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9356-1KK50/alternatives.json"},"ai":{"faq":[{"question":"Will 5SU9356-1KK50 drop into a panel built for 5SL6220-7?","answer":"Both are 2-MW (36 mm wide) DIN-rail RCBOs, but the 5SU9356-1KK50 is a 1P+N RCD-operated breaker with a 50 A C-curve, while the 5SL6220-7 is a different series. Check the wiring diagram — the neutral switching and terminal layout may differ. No direct drop-in guarantee without verifying the panel's specific wiring and busbar arrangement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9356-1KK50","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/5SU9356-1KK50 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}}