Description Product Reviews 506 6 Pair protector block termination 66 in 66 out w Modules 6 Pair telephone line primary protector with 6 7AB0 5-pin modules. Used to protect central office lines coming into a building against surges and sneak current. Features & Benefits UL 497 Listed for primary protection Utilizes industry standard 5-pin protector modules 66 IDC termination input and output High-impact, fire retardant housing Units can be cascaded to provide for expansion Compact, lightweight design AQL Incoming Inspection Process ISO 9001:2000 registered facility Operating Temperature: -13 F to 149 F(-25 C to 65 C) We carry the complete line of Porta Systems protectors and modules if you do not see the item you are looking for please call. 0 Reviews Hide Reviews Product Reviews