Power supply 155W 54V 2.7A, 53.5V 0.5A AD-155C

Buffered power supply for security and automation systems.

This MEAN WELL AD-155C buffered power supply is a reliable solution for monitoring, access control, alarm systems and other applications requiring continuous power. Designed to work with batteries, it ensures uninterrupted operation of devices even in the event of a mains power failure. Its compact dimensions and high efficiency make it an ideal choice for both professional installers and end users.

Functionality and application

The AD-155C power supply offers an output voltage of 54V DC with a current of 2.7A and an additional output for battery charging (0.5A). Thanks to this, it provides a comprehensive solution ensuring both power supply and power backup in the event of a mains failure. The ability to adjust the output voltage in the range of +/-10% allows it to be adapted to the specific requirements of various devices. A wide input voltage range (88-264V AC / 124-370V DC) guarantees compatibility with various electrical installations.

Safety and protection

The power supply is equipped with a number of protections that protect both the powered devices and the power supply itself from damage. These include:

• Overload protection (OLP): Protects against damage caused by excessive load.
• Short circuit protection (SCP): Automatically cuts off the power supply in the event of a short circuit in the circuit.
• Overvoltage protection (OVP): Protects devices from excessive voltage.
• Undervoltage protection (UVP): Prevents damage to the battery by disconnecting it at too low a voltage.
• Battery discharge protection: Protects the battery from excessive discharge, extending its lifespan.

Additionally, the power supply has a built-in battery disconnect circuit (RGR) that prevents deep discharge.

Construction and mounting

The compact housing with dimensions of 199x110x50mm makes it easy to mount the power supply in a limited space. The possibility of mounting on a DIN rail (using dedicated brackets) increases installation flexibility. The power supply is convection cooled, which ensures quiet operation and reliability. Made of high-quality components, it guarantees a long service life and stable operation for many years. It has screw terminals to facilitate connection of wires.