Surgelogic Type EMA Series surge protective devices deliver specification grade performance for service entrance or critical branch panel applications. These multi-phase surge suppression systems provide transient suppression, noise filtration, enhanced EMI/RFI filtering with sine wave tracking in a durable modular package. They provide better performance with a diagnostic interface with push to test switches, red and green status LEDs, module status LEDs per mode, dry contacts, audible alarm with disable switch, and a surge counter. This surge protection device is 3 phase, 4-wire + ground, 480Y/277 V, 480 kA surge current per phase, and short circuit current rating of 200 kA. It has 10 year product warranty and 16 modes of protection.