The Eaton 9917D43H21 Current Transformer is a compact AC sensing device rated for 50–400 Hz operation and up to 600 V system voltage. Designed to step down higher currents for meters, protective relays, and data acquisition equipment, it provides electrical isolation and enables accurate monitoring of load in panels, industrial equipment, and distribution networks. Part number 9917D43H21 (BIN521) identifies this Eaton current transformer.
