Eaton's SPD series surge protectors are the latest and most advanced UL 1449 3rd Edition certified surge protection devices. Application of SPD Series units throughout a facility will ensure that equipment is protected with the safest and most reliable surge protective devices available. SPD Series units are available in all common voltages and configurations and also in a variety of surge current capacity ratings from 50 through 400 kA. Three feature package options are also available to choose from. The breadth of the SPD Series' features, options and configurations ensures that the correct unit is available for all electrical applications.