Industrial CT221-122 Current Transformer

CT221-122 Current Transformer from Amran provides a precise 1200:5 A current ratio, converting up to 1200 A of primary current to a 5 A secondary for accurate sensing in 60 Hz power systems. It is designed for low-to-medium voltage applications and is specified for a 0.6 kV working voltage with a 10 kV Basic Impulse Level (BIL), enabling reliable impulse withstand in industrial environments. The CT221 series, including the CT221-122, is intended for metering panels, relay/control panels, generators, switchgear, circuit breakers, and motor starters, feeding standard 5 A secondaries into meters and protection relays. This makes it suitable for energy monitoring, load profiling, and protection schemes where large primary currents must be measured without burdening the sensing circuitry. By leveraging a high primary current rating and a fixed 5 A secondary, the CT221-122 supports accurate revenue-grade metering and robust protection in electrical distribution networks.