{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU9356-1KK40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU9356-1KK40","canonicalUrl":"https://aoctrl.com/siemens/5SU9356-1KK40","factsUrl":"https://aoctrl.com/api/mcp/products/5SU9356-1KK40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU9356-1KK40, RCBO (RCD-operated circuit breaker), 1P+N, 40 A at 30 °C, Type C, 6 kA / 10 kA, 2 MW, IP20.","salesMarkdown":"The Siemens 5SU9356-1KK40 is a 2-pole (1P+N) SENTRON RCBO — an RCD-operated circuit breaker that combines overcurrent and residual current protection in a single 36 mm wide module. Rated IP20 once the distribution board is closed and conductors are connected; not for wet-area panel faces without a cover. ## Thermal derating and environment Full rating is 40 A at 30 °C. Above that, derate linearly: 37.6 A at 40 °C, 36.4 A at 45 °C, 34.8 A at 50 °C, 32.4 A at 55 °C. Humidity tolerance up to 95%.","metaTitle":"Siemens 5SU9356-1KK40 SENTRON RCBO, 40A Type C, 6/10kA, 2-po","metaDescription":"Siemens SENTRON 5SU9356-1KK40 RCBO, 40A rated, 6kA (EN 60898) / 10kA (IEC 60947-2), Type C, 2-pole, 36mm wide. Current production. Available 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":"40 A","at 40 °C rated value":"37.6 A","at 45 °C rated value":"36.4 A","at 50 °C rated value":"34.8 A","at 55 °C rated value":"32.4 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=629362&mlfb=5SU9356-1KK40","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU9356-1KK40/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SU9356-1KK40 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commercial response."},{"question":"What are the key ratings of 5SU9356-1KK40?","answer":"Rated 40 A at 30 °C, Type C tripping curve, 1P+N (2-pole), breaking capacity of 6 kA per EN 60898 and 10 kA per IEC 60947-2."},{"question":"What is the physical size of 5SU9356-1KK40?","answer":"Width 36 mm (2 modular units), depth 77 mm, height 90 mm, installation depth 70 mm."},{"question":"What compliance documentation does Siemens provide for 5SU9356-1KK40?","answer":"The part is halogen-free and silicon-free. Standard Siemens declarations (CE, UKCA) apply to the SENTRON RCBO range; specific RoHS/REACH documentation is available on request with the RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU9356-1KK40","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/5SU9356-1KK40 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}}