INSTRUMENT E93779 LR89403 Current Transformer is a device used to measure AC current in electrical installations. It is rated for 600 V and 10 VA burden, with a 10 kV rating, and uses a 400:5 turns ratio. The RL-401 (BB4) configuration identifies the enclosure/model variant. With a 400:5 primary-to-secondary ratio, a 400 A input would yield a 5 A output on the secondary, making it compatible with standard metering and protection equipment.
