Positron 3-card Shelf (751127)
The 3-card Shelf is used indoors to accommodate three service cards. The shelf is molded from specially treated polyurethane, making it a lightweight, flame-retardant product of high dielectric strength. Its polyurethane body limits the possibility of many kinds of infiltration while providing reliable isolation from external ground potentials. Power for the 3-card Shelf is provided via an external power supply.

CLEI number: NPMICDAARA

Features:
• The shelf maintains high voltage isolation between the Central Office (CO) and the Station side terminals by an isolation gap
• Additional power inputs such as -24 Vdc, -48 Vdc or -129 Vdc can be fed to the shelf via designated pairs in the station cable
• The Station connector is located at the upper right-hand side of the shelf while the CO connector is located at the bottom right-hand side of the shelf. Both the Station and CO cables connect to the shelf via the backplane PCB
• The unit is lightweight and easy to install; weight with the motherboard is 12.32 lbs (6.19 kg)
• The shelf has been successfully tested for the UL standard (94V0) for flame retardance
• The enclosure resists the infiltration of dust, mist and water from sprinklers