Surgelogic™ SurgeLoc is the industry.s first field installable internally mounted SPD in NQ panelboards. With a wide range of protection modes, enchanced EFI/RFI filtering, and a unique design these field retrofits can be fully installed in NQ panelboard in approximately 2 minutes. They provide better performance with a diagnostic interface with audible alarm, dry contacts surge counter, and phase testing. Space saving features allows you to use standard size panels, requiring only up 6 inches of increased panel size based on the number of breaker slots needed. These surge protection devices all have a short circuit current rating of 200 kA, 10 year product warranty, and 6 modes of protection. This particular model is 1 phase, 3-wire + ground, 20 kA nominal current, 120/240 V, and with a surge current rating 200 kA. The device is engineered to UL 1449 4th Edition, type 1 SPD, and complies with UL 96A for Lightning Protection Systems.