Citel DLC Data Line DIN Rail Surge Protection Devices (SPDs) are UL497B listed devices designed to be installed inside of an enclosure and in very close proximity to the sensitive equipment that is being protected. The DLC devices offer a 12VDC to 170VDC voltage range, -50°C to +85°C ambient temperature range, common/differential protection modes, and are wired in series or parallel with the load. These DIN-rail mounted SPDs also feature hybrid SAD-GDT technology, a 1-channel (2W+Shield+G) network configuration, and screw terminal connections (22AWG to 16AWG) with an IP20, NEMA 2 rated construction.