The CC1443 is a screw-on cover accessory designed for Marathon/Kulka power block systems in the 143 series. It is available in single-pole, two-pole, and three-pole configurations to accommodate modular power block designs where individual covers can be applied per pole. The screw-on mounting style provides secure, permanent attachment to power block terminals and components. This cover is commonly used in industrial power distribution, control panel assembly, and equipment protection applications where terminal safety and environmental sealing are required.