This VoltVault main contact kit is suitable for ABB AF750 DC controllers and is made of copper and silver materials. The kit includes nine units and comes in a bag for easy packaging. The contacts are designed for DC current type and are compatible with the AF750 series. The ZL750 model main contact kit is 45mm in length, 120mm in height, and 220mm in width. It is a high-quality electrical equipment accessory that is perfect for business and industrial use. The kit is manufactured in China and is sold as a unit quantity.