The 2839185 is a two-channel, pluggable surge protection device designed to safeguard telecommunications and signaling networks from overvoltages. It operates with a nominal voltage of 120V AC and a maximum continuous voltage of 150V AC. Key protective characteristics include a nominal discharge current (In) of 2.5 kA and a total discharge current (Itotal) of 5 kA, with a fast line-earth response time of less than 25 ns. The two-piece design allows for impedance-neutral disconnection, simplifying maintenance and testing without disrupting the installation's base element. This device is ideal for applications requiring consistent signal circuit protection compliant with IEC 61643-21.