Surge protectors come in various types, including metal oxide surge protectors, line-type metal oxide surge protectors, gapless line-type metal oxide surge protectors, fully insulated composite jacket metal oxide surge protectors, and removable surge protectors.

The main types of surge protectors include tube-type, valve-type, and zinc oxide surge protectors, among others. Each type operates on a different principal, but their fundamental function is the same; they are all designed to protect communication cables and equipment from damage.