{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1356-0KK40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1356-0KK40","canonicalUrl":"https://aoctrl.com/siemens/5SU1356-0KK40","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1356-0KK40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1356-0KK40 RCBO, 2-pole (1P+N), 40 A rated, Type B tripping characteristic, 6 kA (EN 60898) / 10 kA (IEC 60947-2), residual current type AC, instantaneous design.","salesMarkdown":"The Siemens SENTRON 5SU1356-0KK40 is a 2-pole (1P+N) residual current operated circuit breaker (RCBO) combining overcurrent protection and residual current detection in a single 36 mm wide (2 modular width units) device for 50 Hz systems. Rated 40 A at 30 °C with a Type B tripping characteristic, it interrupts overcurrents per EN 60898 up to 6 kA and per IEC 60947-2 up to 10 kA, with a residual current type AC (sinusoidal) — suited for general-purpose final circuits in residential and commercial distribution boards. ## Temperature derating — what the 40 A rating actually means in a warm panel At 40 °C the continuous current drops to 37.6 A, at 50 °C to 34.8 A, and at 70 °C to 29.2 A. If the distribution board sits in a warm environment or is tightly packed, size the load side accordingly — the nameplate 40 A is not the usable figure at elevated panel temperature. Width of 36 mm (2 MW), depth of 77 mm, and installation depth of 70 mm.","metaTitle":"Siemens SENTRON 5SU1356-0KK40 RCBO 2-pole 40 A Type B 6 kA","metaDescription":"Siemens SENTRON 5SU1356-0KK40 RCBO, 2-pole 1P+N, 40 A, Type B, 6 kA per EN 60898, 10 kA per IEC 60947-2. 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","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 Hz","Product Designation":"RCBO","acc. to IEC 81346-2":"F","at AC / rated value":"40 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","Number Of Poles / Note":"1P+N","acc. to DIN EN 61346-2":"F","Energy Limitation Class":"3","Weight / With Packaging":"289 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","at 60 °C / rated value":"32.4 A","at 65 °C / rated value":"30.8 A","at 70 °C / rated value":"29.2 A","Number Of Modular Width Units":"2","Tripping Characteristic Class":"B","acc. to EN 60898 / rated value":"6 kA","For Testing Equipment / Minimum":"195 V","Position / Of Power Supply Cord":"Either top or bottom","Number Of Poles / With Protection":"1","acc. to IEC 60947-2 / rated value":"10 kA","Product Feature / Touch Protection":"Yes","Tripping Fault Current / Rated Value":"30 mA","Supply Voltage Frequency / Rated Value":"50 Hz","Influence Of The Surrounding Temperature":"Max. 95% humidity","Surge Current Resistance / At (8/20) μS":"1 kA","Product Function / Neutral Conductor Switching":"Yes","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7001171f82e1db0554836c25e86a820a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=75047&mlfb=5SU1356-0KK40","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1356-0KK40/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SU1356-0KK40?","answer":"Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time; the part is sourced to order through independent distribution."},{"question":"What is 5SU1356-0KK40's listed depth (77 mm) on this component line?","answer":"Depth is 77 mm, with an installation depth of 70 mm. Width is 36 mm (2 modular width units), height is 90 mm."},{"question":"What compliance documentation does this brand provide for 5SU1356-0KK40 (RoHS, REACH, UL, IEC)?","answer":"The RCBO is designed per EN 60898 (6 kA) and IEC 60947-2 (10 kA), halogen-free and silicon-free. Specific RoHS/REACH declarations are manufacturer-provided; request them with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1356-0KK40","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/5SU1356-0KK40 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}}