Encased in corrosion-resistant aluminum body, Models PMT-36V350W1AR and PMT-48V350W1AR deliver output voltage of 36 V and 48 V, respectively. Both 350 W power supplies feature selectable AC input voltage switch and built-in fan with automatic speed control for thermal management. Providing MTBF of greater than 700,000 hr as per Telcordia SR-332, power supplies include short circuit, overvoltage, overload, and over temperature protections.