{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1374-7DK81","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1374-7DK81","canonicalUrl":"https://aoctrl.com/siemens/5SU1374-7DK81","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1374-7DK81","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1 series RCBO, 4-pole, 100 A, Type B+ fault current, 10 kA breaking capacity, 11 MW, IP20.","salesMarkdown":"The Siemens 5SU1374-7DK81 is a 4-pole RCBO from the SENTRON 5SU1 series, combining overcurrent protection and residual current detection in a single 11-module-wide unit. The Type B+ fault current detection handles AC, pulsating DC, smooth DC, and high-frequency residual currents — covering modern electronics, VFDs, and UPS systems that generate complex leakage profiles. ## Thermal derating and conductor sizing The 100 A rating holds only at 30 °C. At 40 °C it derates to 92.5 A, at 50 °C to 85 A, and at 60 °C to 77 A. In a warm panel near other heat sources, the effective continuous current is lower than the nameplate — plan the load accordingly.","metaTitle":"Siemens 5SU1374-7DK81 SENTRON RCBO, 4P, 100 A, Type B+, 10 k","metaDescription":"Siemens SENTRON 5SU1374-7DK81 RCBO, 4-pole, 100 A rated at 30 °C, Type B+ fault current, 10 kA breaking capacity per EN 60898. Active production, available to order. RFQ for pricin","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Solid":"6 ... 50 mm²","Width":"198 mm","Height":"90 mm","Stranded":"6 ... 50 mm²","at 30 Cel":"100 A","at 40 Cel":"92.5 A","at 45 Cel":"89 A","at 50 Cel":"85 A","at 55 Cel":"81 A","at 60 Cel":"77 A","Halogen-Free":"Yes","Silicon-Free":"Yes","During Storage":"-40 ... +75 °C","Number of poles":"4","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","Energy limiting class":"3","Number of width units":"11","Type of fault current":"B+","Number of poles / Note":"4P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SU1","Current / at AC / rated value":"100 A","Tripping characteristic class":"C","acc. to EN 60898 / rated value":"10 kA","For Testing Equipment / Minimum":"195 V","Position / of power supply cord":"Either top or bottom","Number of poles / with protection":"4","acc. to IEC 60947-2 / rated value":"10 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":"3 kA","Tightening torque / with screw-type terminals":"3 ... 3.5 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/ef5fa74f4baaa750e4e5b38f3c7640f9.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=236716&mlfb=5SU1374-7DK81","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1374-7DK81/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SU1374-7DK81 and get a price?","answer":"This RCBO is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"What is the depth of 5SU1374-7DK81?","answer":"The depth is 77 mm, with an installation depth of 70 mm. It occupies 11 width units (198 mm) on the DIN rail."},{"question":"What conductor sizes does 5SU1374-7DK81 accept?","answer":"It accepts solid and stranded conductors from 6 to 50 mm², covering distribution cable sizes up to the full 100 A rating."},{"question":"What compliance documentation is available for 5SU1374-7DK81?","answer":"The RCBO is halogen-free and silicon-free, classified as overvoltage category III and energy limiting class 3. It carries touch protection and is designed per EN 60898 and IEC 60947-2 for breaking capacity. Standard Siemens documentation includes RoHS and REACH declarations."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1374-7DK81","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/5SU1374-7DK81 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}}