Eaton surge protective devices are the latest and most advanced UL 1449 3rd Edition certified surge protectors.
Units are available in all common voltages and configurations, and also in a variety of surge current capacity ratings from 50 through 400 kA.

• the surge current capacity you need: 80kA, 100kA, 120kA, 160kA, 200kA, 250kA, 300kA, 400kA (higher capacity means higher/better protection). The 200kA to 400kA ratings are typically used for service entrance panels; the 80kA to 160kA ratings are typically used for branch panels (assuming service panels are already protected)
• feature package: surge protection level is the same for the three packages
  • Basic: LED status of each phase and neutral to ground when applicable
  • Standard: same as "Basic" plus audible alarm, plus FormC relay contact and EMI/RFI filtering
  • Standard w/ Surge Counter: same as "Standard" plus surge counter
• system voltage: 120/208Y, 240 Delta, 277/480Y...
• No Integral Disconnect or Integral Disconnect