Surgelogic Type IMA systems are internal surgical protection devices with a focus on service entrance and critical branch panel surge suppresion. Being the industry's first field installable internally mounted SPDs in NQ panelboards, this unit is able to provide a surge current rating of 120,000 Amps. With a surge current rating of 120,000 Amps and enhanced EMI/RFI filtering, this unit is retrofitted to be installed in a wide variety NQ Panelboards. This unit uses the WYE system to allow two different voltages using three phase.