CITEL's DIN rail plug-in surge protector, 1-pair, 6 V, shield wire protection. DLA surge protectors are designed to protect, against surge voltages due to lightning, terminals equipment connected to industrial buses, telecom lines, or datalines. These surge protectors must be installed on symmetrical DIN rail and are available for most of the transmission lines: line voltage from 6 – 170 V, bitrate up to 10 Mbps. These products are 1-pair surge protectors with removable module for easy maintenance.