{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1353-1KL40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1353-1KL40","canonicalUrl":"https://aoctrl.com/siemens/5SU1353-1KL40","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1353-1KL40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCBO, 5SU1353-1KL40, 1P+N, 40 A at 30 °C, Type C, 4.5 kA (EN 60898) / 5 kA (IEC 60947-2), 2 MW, IP20, 77×36×90 mm.","salesMarkdown":"The Siemens 5SU1353-1KL40 is a SENTRON-series residual current circuit breaker with overcurrent protection (RCBO) in a 1P+N, 2-pole format, combining ground-fault and short-circuit/overload protection in one 36 mm wide (2 MW) module. Breaking capacity is 4.5 kA per EN 60898 and 5 kA per IEC 60947-2 — enough for most sub-distribution boards downstream of a main breaker; the higher IEC figure covers industrial panel duty where the prospective fault current is known to be under 5 kA. The 40 A rating holds only at 30 °C; at 40 °C it derates to 37.6 A, at 50 °C to 34.8 A, and at 70 °C to 29.2 A. Mounting position is any orientation (vertical, horizontal, flat), and supply can enter from top or bottom — useful when retrofitting into an existing board where the busbar layout is fixed. ## Physical fit and compliance Dimensions: 77 mm deep (70 mm installation depth behind the panel face), 36 mm wide (2 modular width units), 90 mm tall. Fits standard DIN-rail enclosures with 2-pole busbar takeoffs. Overvoltage category III, pollution degree 2, surge voltage resistance 4 kV — suitable for fixed-installation distribution boards. Halogen-free and silicon-free construction, energy limitation class 3.","metaTitle":"Siemens 5SU1353-1KL40 SENTRON RCBO, 40 A, Type C, 4.5 kA","metaDescription":"Siemens 5SU1353-1KL40 SENTRON RCBO, 1P+N, 40 A rated at 30 °C, Type C tripping characteristic, 4.5 kA per EN 60898. Active production. Sourced to order against RFQ.","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","title":"5SU1353-1KL40","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","description":"RCBO, 4.5 kA, 1P+N, Type AC, 30 mA, C-Char, In: 40 A, Un AC: 230 V, N left","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 Hz","Product Designation":"RCBO","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Instantaneous","Weight With Packaging":"296 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","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":"4.5 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":"5 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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7310e617cbff62bd599a5a28dca56028.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=367218&mlfb=5SU1353-1KL40"},"ai":{"faq":[{"question":"What is the rated current of 5SU1353-1KL40 and how does temperature affect it?","answer":"Rated 40 A at 30 °C ambient. It derates to 37.6 A at 40 °C, 34.8 A at 50 °C, and 29.2 A at 70 °C — size the upstream protection for the derated figure if the panel runs hot."},{"question":"Where can I buy 5SU1353-1KL40 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1353-1KL40","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/5SU1353-1KL40 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}