Dual Voltage Power Supply W Back-Up

Manufacturer Part Number: ADD-155B

The ADD-155B is an enclosed switching power supply designed to provide regulated DC power for communications equipment, control systems, and other electronic devices. It features three outputs: a primary 27.6V DC output for powering connected equipment, a 5V DC auxiliary output, and a 27.1V DC battery-charging output. Its integrated battery backup function supports continuity of power for compatible loads when the AC supply is interrupted.

The ADD-155B accepts a wide AC input range and can also operate from a compatible DC input source. It uses natural convection cooling, so it does not require a built-in cooling fan. Integrated protection features include short-circuit, overload, overvoltage, low-battery, and battery-polarity protection. With its chassis-mount enclosure and compact dimensions, it is suitable for installations requiring regulated 27.6V DC power with auxiliary 5V output and battery backup capability.

Key Features

• Triple-output design
• UPS functionality
• Wide input range
• Fanless cooling
• Adjustable primary output