{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9356-1CN40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9356-1CN40","canonicalUrl":"https://aoctrl.com/siemens/5SU9356-1CN40","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9356-1CN40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU9356-1CN40, RCD-operated circuit breaker, 1P+N, 40 A (30 °C), C-curve, 6 kA per EN 60898, 2 MW, IP20.","salesMarkdown":"The Siemens 5SU9356-1CN40 is a SENTRON RCD-operated circuit breaker — an RCBO that combines overcurrent protection and residual current detection in a single 2-module-wide (36 mm) package. Rated 40 A at 30 °C with a C-curve trip characteristic, it breaks fault currents up to 6 kA per EN 60898 and IEC 60947-2. The 1P+N design protects one phase while switching the neutral, and the instantaneous residual-current element responds without intentional delay. The 40 A rating at 30 °C is the headline number, but the derating curve matters in a warm panel: at 40 °C it carries 37.2 A, at 45 °C 35.2 A, at 50 °C 34.4 A, and at 55 °C 33.2 A. If your enclosure runs above 30 °C, size the load against the derated figure, not the 40 A label. Two modular-width units (36 mm wide, 77 mm deep, 90 mm high) snap onto a DIN rail. Halogen-free and silicon-free construction is specified, which matters for panels in environments sensitive to corrosive off-gassing, such as pulp and paper mills or food processing lines.","metaTitle":"Siemens 5SU9356-1CN40 SENTRON RCBO, 40 A, C-curve, 6 kA, 1P+","metaDescription":"Siemens 5SU9356-1CN40 SENTRON RCD-operated circuit breaker, 40 A rated at 30 °C, C-curve, 6 kA breaking capacity per EN 60898, 1P+N, 2 MW wide, IP20. Quoted 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","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":"290 g","at 30 °C rated value":"40 A","at 40 °C rated value":"37.2 A","at 45 °C rated value":"35.2 A","at 50 °C rated value":"34.4 A","at 55 °C rated value":"33.2 A","Energy Limitation Class":"3","For Testing Equipment Minimum":"125 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":"6 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=800758&mlfb=5SU9356-1CN40","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9356-1CN40/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SU9356-1CN40?","answer":"Submit an RFQ through this listing. The part is sourced to order through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What is 5SU9356-1CN40's listed depth (77 mm) on this component line?","answer":"The listed depth is 77 mm, with an installation depth of 70 mm."},{"question":"What is 5SU9356-1CN40's listed width (36 mm) on this component line?","answer":"The width is 36 mm, which corresponds to 2 modular-width units."},{"question":"Will 5SU9356-1CN40 drop into a panel that was specified around 5SU9354-7KK16 without rewiring?","answer":"Both are 2-MW SENTRON RCBOs with the same physical footprint (36 mm wide, DIN-rail mount), so the swap is a direct mechanical fit. However, the 5SU9356-1CN40 is a 40 A C-curve instantaneous type, while the 5SU9354-7KK16 is a different rating/curve — verify the load current and trip characteristic before substituting."},{"question":"What compliance documentation does this brand provide for 5SU9356-1CN40 (RoHS, REACH, UL, IEC)?","answer":"The breaker is rated per EN 60898 and IEC 60947-2 for breaking capacity. Halogen-free and silicon-free construction is declared. For specific RoHS/REACH/UL declarations, request the manufacturer's compliance documentation at quote time — the evidence does not list those certifications directly on this variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9356-1CN40","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/5SU9356-1CN40 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}}