The ABB KT5U1 is an undervoltage release accessory designed for seamless integration with T4-T5 circuit breakers. This field-installable unit operates effectively within a voltage range of 480-500VAC, ensuring reliable protection and performance. The KT5U1 model, identified by its item number and UPC 662019146782, is a crucial component for maintaining the safety and efficiency of electrical systems. Weighing just 6.4 oz, it is both lightweight and durable, making installation and handling straightforward. Ideal for various industrial applications, the ABB KT5U1 enhances system stability by preventing under-voltage conditions.