The Eaton 143-302 Current Transformer from Eaton Instrument Transformers is a ratio current transformer that steps a 3,000 A primary down to a 5 A secondary (3000:5). It is rated for frequencies from 50 to 400 Hz, suitable for AC systems across typical regional grids. Designed to feed standard 5 A instrument inputs, it supports measurement and protection schemes by providing the appropriate secondary current for meters, relays, and other monitoring equipment in high-current circuits.
