The most advanced of the STX series, the Surge-Trap® Type 1 STXT Series comes standard with EMI/RFI Filtering and surge capacities up to 200kA. The STXT features TPMOV® technology inside making it the safest product available. With line or load side installation flexibility, this unit is a great fit from the service entrance all the way down to each distribution and/or branch panel. 480Y/277V, L-G, L-L, L-N, N-G, 3-Phase Wye, LED and Remote Audible Alarm 100 kA per phase