The Instrument Transformers 150:5A Current Transformer 21-151 is a high-quality current sense transformer designed for AC to AC current conversion. With a single phase and a primary impedance of 20 Ω, this transformer is ideal for precise measurement and control of electrical currents. Manufactured in the United States, this transformer ensures reliability and accuracy in a variety of industrial and commercial applications, making it a valuable addition to any electrical equipment and supplies inventory.