{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1353-7KL40","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1353-7KL40","canonicalUrl":"https://aoctrl.com/siemens/5SU1353-7KL40","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1353-7KL40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1 RCBO, 1P+N, 40 A rated current, tripping characteristic C, 4.5 kA breaking capacity, type A fault current, halogen-free.","salesMarkdown":"The Siemens 5SU1353-7KL40 is a SENTRON 5SU1 RCBO (residual current circuit breaker with overcurrent protection) combining a 40 A rated current, type C tripping characteristic, and a 4.5 kA breaking capacity per EN 60898 into a single 1P+N unit. It detects type A fault currents — pulsating DC superimposed on AC — which covers most modern electronic loads like switched-mode power supplies and variable-speed drives. Above that, the device derates: 37.6 A at 40 °C, 36.4 A at 45 °C, 34.8 A at 50 °C, 32.4 A at 55 °C, 32.4 A at 60 °C, 30.8 A at 65 °C, and 29.2 A at 70 °C. If the panel ambient runs at 50 °C, the effective limit is 34.8 A — not 40 A. The type C magnetic trip (5–10× In) handles moderate inrush from motor starters and transformers without nuisance tripping, while the 4.5 kA SCCR at 230/400 V AC is adequate for most final subcircuits in a building distribution board. Overvoltage category III (distribution-level) and energy limiting class 3 mean it limits let-through energy enough to protect downstream wiring and loads under short-circuit conditions. The test button requires a minimum of 195 V to operate correctly — verify line voltage before commissioning. Accepts solid or stranded conductors from 0.75 mm² up to 35 mm² — enough for a 40 A circuit on 6–10 mm² copper. Supply can enter from either top or bottom, which simplifies busbar routing in a crowded enclosure. IP20 rated once the distribution board cover is installed and conductors are connected.","metaTitle":"Siemens 5SU1353-7KL40 SENTRON RCBO, 40 A, Type C, 4.5 kA","metaDescription":"Siemens 5SU1353-7KL40 SENTRON RCBO, 1P+N, 40 A rated, type C trip, 4.5 kA breaking capacity, type A fault current. Halogen-free. 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","Solid":"0.75 ... 35 mm²","Width":"36 mm","Height":"90 mm","Maximum":"15.6 W","Stranded":"0.75 ... 35 mm²","at 30 Cel":"40 A","at 40 Cel":"37.6 A","at 45 Cel":"36.4 A","at 50 Cel":"34.8 A","at 55 Cel":"32.4 A","at 60 Cel":"32.4 A","at 65 Cel":"30.8 A","at 70 Cel":"29.2 A","Halogen-Free":"Yes","Silicon-Free":"Yes","During Storage":"-40 ... +75 °C","Number of poles":"2","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +55 °C","Product designation":"RCBO","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage category":"III","Design of the product":"Instantaneous","Energy limiting class":"3","Number of width units":"2","Type of fault current":"A","Number of poles / Note":"1P+N","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SU1","Current / at AC / rated value":"40 A","Tripping characteristic class":"C","acc. to EN 60898 / rated value":"4.5 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":"4.5 kA","Product feature / Touch protection":"Yes","Supply voltage frequency / rated value":"50 Hz","Tripping residual current / rated value":"30 mA","Influence of the surrounding temperature":"Max. 95% humidity","Surge current resistance / at (8/20) μs":"1 kA","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","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/f74268448af1a487a785ffaddf78e1bc.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=257211&mlfb=5SU1353-7KL40","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1353-7KL40/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 5SU1353-7KL40 and get a price?","answer":"This RCBO is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing."},{"question":"What is the depth of the 5SU1353-7KL40?","answer":"Overall depth is 77 mm; installation depth (behind the panel surface) is 70 mm."},{"question":"What conductor sizes does the 5SU1353-7KL40 accept?","answer":"Terminals accept solid or stranded copper from 0.75 mm² up to 35 mm²."},{"question":"What compliance documentation does Siemens provide for the 5SU1353-7KL40?","answer":"The device is halogen-free and silicon-free. It carries a 4.5 kA breaking capacity rating per EN 60898 and is designed for overvoltage category III. Standard Siemens declarations of conformity (CE, UKCA) and material compliance (RoHS, REACH) are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1353-7KL40","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/5SU1353-7KL40 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}}