{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1374-7AK82","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1374-7AK82","canonicalUrl":"https://aoctrl.com/siemens/5SU1374-7AK82","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1374-7AK82","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SU1374-7AK82, RCBO, 4-pole, 125 A, 30 mA residual current, type B, short-time-delayed K, C-characteristic, 10 kA breaking capacity per EN 60898, 400 V AC.","salesMarkdown":"The 30 mA sensitivity covers personnel protection against direct contact (IEC 60364-4-41), while the C-curve handles moderate inrush from motor and lighting loads without nuisance tripping. This is the 'Super resistant K' design variant, built for environments where nuisance tripping from transient surges or lightning-induced currents is a concern — the short-time-delayed K characteristic allows brief high-frequency leakage (like from VFDs or switching supplies) to pass without dropping the load, while still clearing a genuine ground fault at 30 mA. ## Panel fit and physical integration The unit occupies 11 modular width units on a standard DIN rail (198 mm wide, 77 mm deep, 90 mm tall) with an installation depth of 70 mm behind the panel face. The IP20 rating applies once the distribution board is installed and conductors are connected; the board itself provides the environmental seal. Surge voltage resistance is 4000 V, and the unit handles a 3 kA surge current (8/20 μs waveform), which is the standard impulse for lightning-induced transients on low-voltage mains. Energy limitation class 3 means the RCBO limits let-through energy during a fault, reducing stress on downstream equipment and wiring. The test circuit requires a minimum of 195 V to verify the residual-current function — important to know if you're commissioning on a reduced-voltage supply.","metaTitle":"Siemens 5SU1374-7AK82 SENTRON RCBO, 4P, 125 A, 30 mA, C-Char","metaDescription":"Siemens SENTRON 5SU1374-7AK82 RCBO, 4-pole, 125 A, 30 mA, type B, short-time-delayed K, C-characteristic, 10 kA per EN 60898. Active production, sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Width":"198 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"4P","Number Of Poles":"4","lifecycle_stage":"current","Mounting Position":"any","at AC rated value":"400 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Operating Frequency":"50/60 Hz","Product Designation":"RCBO","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Super resistant K","Weight With Packaging":"2 071 g","Energy Limitation Class":"3","For Testing Equipment Minimum":"195 V","Number Of Modular Width Units":"11","Position Of Power Supply Cord":"Either top or bottom","Tripping Characteristic Class":"C","Number Of Poles With Protection":"4","according to EN 60898 rated value":"10 kA","insulation voltage (Ui) rated value":"440 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":"3 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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bb5b47a1e7094d7059831bbff8efbf3a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=264080&mlfb=5SU1374-7AK82","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1374-7AK82/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 5SU1374-7AK82 and how is it quoted for volume purchases?","answer":"The 5SU1374-7AK82 is sourced through independent distribution channels and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — submit an RFQ for volume pricing and lead time."},{"question":"What is 5SU1374-7AK82's listed depth?","answer":"The 5SU1374-7AK82 has a depth of 77 mm, with an installation depth of 70 mm behind the panel face."},{"question":"What compliance documentation does the SENTRON brand provide for 5SU1374-7AK82?","answer":"The 5SU1374-7AK82 carries ratings per EN 60898 and IEC 60947-2 (both 10 kA breaking capacity), is halogen-free and silicon-free, and is designed for overvoltage category III with pollution degree 2. Standard Siemens SENTRON documentation includes CE declaration of conformity and RoHS compliance information."},{"question":"Where can I buy 5SU1374-7AK82?","answer":"The 5SU1374-7AK82 is available to order through independent distribution channels. Submit an RFQ to confirm current pricing and availability — the part is sourced and quoted on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1374-7AK82","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/5SU1374-7AK82 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}}