Power supply 55W 27.6V 2A, 26.5V 0.16A AD-55B

The AD-55B power supply is a reliable device that provides uninterrupted power for alarm systems, access control, industrial automation and other devices requiring a stable voltage. Its design allows it to work with maintenance-free batteries, ensuring continuous operation even in the event of a mains power failure. This is an ideal solution for both professional installers and end-users looking for a safe and effective way to protect their systems.

Functionality and Application

The AD-55B buffered power supply converts 230V mains voltage to 27.6V DC voltage, while simultaneously charging the connected battery. In the event of a power failure, the device automatically switches to battery power, guaranteeing uninterrupted operation of connected devices. The perforated metal housing provides effective cooling, and the solid construction guarantees long-lasting and trouble-free operation. This makes it an ideal choice for applications requiring high reliability and power stability.

Safety and Protection

The power supply is equipped with a number of protections that protect both the device and the systems connected to it. These include protection against overload, overvoltage and short circuit. In addition, the built-in battery disconnect circuit (RGR) prevents excessive discharge, extending its lifespan. The low battery indicator informs about the need to replace or recharge it. The power supply meets EN-60950 (Class I) safety standards, confirming its high level of safety.

Mounting and Installation

Mounting the power supply is simple and intuitive. It can be mounted both with screws to the supporting structure of the powered device, and on a 35mm DIN rail using special mounting elements. It is important to ensure free air flow around the device for effective cooling. The screw terminals are clearly marked, making it easy to correctly connect the power and battery cables – remember to maintain the correct polarity! The installer can also adjust the output voltage within a certain range using a potentiometer.