{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9356-1CR20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9356-1CR20","canonicalUrl":"https://aoctrl.com/siemens/5SU9356-1CR20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9356-1CR20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCBO, 1P+N, 20 A, Type C, 30 mA, 6 kA, 2 MW, IP20.","salesMarkdown":"The Siemens 5SU9356-1CR20 is a SENTRON RCD-operated circuit breaker (RCBO) combining overcurrent and residual current protection in a single 2-module-width package. The 20 A rating is at 30 °C ambient; at 40 °C it derates to 18.8 A, at 45 °C to 18.2 A, at 50 °C to 17.4 A, and at 55 °C to 16.2 A. If your distribution board runs warm — say, tightly packed with other breakers — size the circuit load against the derated figure, not the nominal 20 A. ## DIN-rail footprint and integration Depth is 77 mm, height 90 mm, installation depth 70 mm. Mounting position any, supply feed from top or bottom. IP20 with conductors connected — meaning it's protected against finger contact only when wired inside a closed distribution board. Pollution degree 2, overvoltage category III, suitable for fixed installations downstream of the main panel.","metaTitle":"Siemens 5SU9356-1CR20 SENTRON RCBO, 20A Type C, 30mA, 6kA","metaDescription":"Siemens 5SU9356-1CR20 SENTRON RCBO, 20A rated, Type C trip curve, 30mA residual current, 6kA breaking capacity. Active production, sourced to order.","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","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Operating Frequency":"50/60 Hz","Product Designation":"RCD-operated circuit breaker","at AC / rated value":"20 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","Energy Limitation Class":"3","Weight / With Packaging":"280 g","according to EN 61346-2":"F","at 30 °C / rated value":"20 A","at 40 °C / rated value":"18.8 A","at 45 °C / rated value":"18.2 A","at 50 °C / rated value":"17.4 A","at 55 °C / rated value":"16.2 A","according to IEC 81346-2":"F","Number Of Modular Width Units":"2","Tripping Characteristic Class":"C","For Testing Equipment / Minimum":"125 V","Position / Of Power Supply Cord":"Either top or bottom","Number Of Poles / With Protection":"1","according to EN 60898 / rated value":"6 kA","Tripping Fault Current / Rated Value":"30 mA","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","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","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"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=629341&mlfb=5SU9356-1CR20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9356-1CR20/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source to 5SU9356-1CR20?","answer":"The 5SY5250-7 is a different class — it's an MCB without RCD protection. The 5SU9356-1CR20 is an RCBO combining overcurrent and residual current protection; there is no direct second-source that drops into the same panel without rewiring. For a functional equivalent, look for another 1P+N RCBO with 20 A Type C and 30 mA AC-type trip, 6 kA breaking capacity, 2 MW width."},{"question":"Will 5SU9356-1CR20 drop into a panel specified around 5SY5250-7?","answer":"No — the 5SY5250-7 is an MCB only; the 5SU9356-1CR20 is an RCBO with a neutral connection and larger depth. The panel would need rewiring to accommodate the RCD function and neutral terminal."},{"question":"What compliance documentation does Siemens provide for 5SU9356-1CR20?","answer":"The part carries EN 60898 certification for the MCB function and IEC/EN 61008 for the RCD function. It is halogen-free and silicon-free. Specific RoHS, REACH, and UL documentation should be requested at quote time."},{"question":"Where can I buy 5SU9356-1CR20?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9356-1CR20","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/5SU9356-1CR20 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}}