The Furnas 49AAFC Auxiliary Interlock Series C is a high-quality unit designed for electrical equipment and supplies in a business and industrial setting. This interlock, part of the Series A, is a key accessory for contactors, providing reliable functionality and safety. The unit quantity is one, making it a versatile and essential component for various industrial applications. With the reputable brand of Furnas, you can trust in the performance and durability of this auxiliary interlock.