ABB Q018SA015A SURGE ARRESTER LOW VOLTAGE POLIM-S METAL OXIDE GAPLESS 18KV MCOV 15.3KV DUTY CYCLE VOLATGE 175KV BIL 1.2/50 USEC 15 TO 62HZ POLYMER HOUSING -50 TO +60C 18.36 HT X 6.61 DIA IN VERTICAL MOUNTING W/ 23.6IN CREEPAGE DISTANCE