Loaded with a generous combination of high quality components, near indestructible all-metal case and unique noise filtration system, the Tripp Lite ISOBAR6ULTRAHG 6 Outlet Surge Suppressor offers the highest level of protection attainable in a multi-outlet strip. This 120V Isobar Surge Suppressor feature robust surge suppression circuits with sine-wave tracking to offer extreme levels of protection against the heaviest normal mode surge conditions. This Tripp Lite Surge Suppressor's unique protection system combines large torroidal chokes, ferrite rod-core inductors, HF/VHF capacitors and metal oxide varistors into an exclusive isolated filter bank that removes EMI/RFI interference. The 120V Isobar Surge Suppressor offers 6 high quality hospital-grade outlets arranged in one filter bank to prevent system crashes, reboots and performance problems. Surge suppression of this Tripp Lite ISOBAR6ULTRAHG 6 Outlet Surge Suppressor is rated at 600 joules.