Schneider Electric 74R-251-002 Current Transformer

Schneider Electric's Square D 74R-251-002 current transformer is a general‑purpose, through‑bus window CT designed for metering and protection in 600 V‑class electrical systems. It provides a 250:5 primary‑to‑secondary ratio (allowing measurement of up to 250 A with a 5 A secondary) and features a 2.34‑inch window for direct enclosure around conductors, with an approximate weight of 2.6 lb. Built for 50–400 Hz operation and an insulation rating up to 10 kV, it supports compact installations in panels and switchgear while maintaining reliable performance in industrial and commercial power networks. This 74R‑series CT is intended to feed accurate current signals to meters, relays, and data‑acquisition systems, making it well suited for power monitoring, protection schemes, and energy management across a wide range of applications.