These are high quality enclosed universal AC input switching power supplies. They have over current and short circuit protection. The voltage is adjustable +/-10%.
See the data sheet in attachments section for detailed specifications.
Warning: In order to use these power supplies you must connect the primary AC voltage. This must be done by a qualified electrical technician. These voltages remain exposed on the terminals until they are covered by an enclosure.
Note: The power supplies will run at 110V or 220V, but you must adjust a selector switch. Failure to use the power supply at the right voltage can permanently damage it.
Note: The power supplies have ‘over current’ protection. If the connected circuit tries to draw too much current, the power supply will shut down. The green LED will not light up or glow very dimly in this mode. You can reset this fault by removing AC power for at least 10 seconds. Some items like DC motors briefly pull a lot of current at turn on and can cause this problem. It helps to not turn on these circuits by switching the AC power. Switch it on the DC side or turn it on slowly through a speed controller.