The STACO ENERGY part 3PN221B is a versatile Variable Transformer designed for single-phase applications. With a maximum current rating of 2.5Ao and a voltage range of 0-132Vo, this transformer can handle a wide range of voltage control needs. With its compact and portable design, this transformer comes with a plug and cord, making it easy to use and move around. It is encased in a sturdy casing, making it suitable for bench applications.With a power rating of 0.33kVA, this transformer provides reliable and efficient voltage control. Whether you need to adjust voltage for testing, laboratory experiments, or other applications, the STACO ENERGY part 3PN221B is an ideal choice, offering precise control and reliable performance.