Relay bases/sockets are used when you want relays to be easily mounted and replaced within a circuit . They make this process much simpler than if the relay was connected directly to the power source Specifications: Brand Name: CHINT Model Number: CZY14A Usage: General Purpose Size: Miniature Rated voltage: 220V Rated Current: 5A Contact switching voltage: 220V Number of holes: 14 Package Includes: 1 x Chint CZY14A Relay base