Power supply 155W 27.6V 5.5A, 27.1V 0.5A AD-155B

Buffered power supply for security and automation systems

This industrial buffered power supply from the AD series is a reliable solution for ensuring uninterrupted power supply in monitoring, access control, alarm and industrial automation systems. Its design allows it to work with a battery, creating a UPS (Uninterruptible Power Supply) system that protects against the effects of power outages. This ensures that devices remain in standby mode or continue to operate even during a mains failure.

The power supply offers two outputs – one main (27.6V DC, 5.5A) and a second for battery charging (27.1V DC, 0.5A), making it a versatile element of the installation. Built-in protections protect both the power supply itself and the connected devices against short circuits, overloads and overvoltages. Additionally, the deep discharge protection function for the battery extends its lifespan.

Functionality and application

The AD-155B power supply is ideal for applications requiring high reliability and stable power supply. It can be used in:

• Video surveillance systems – ensuring continuous recording even during power failures.
• Access control systems – maintaining the operation of electromagnetic locks and card readers.
• Alarm systems – guaranteeing the operation of sensors and signaling devices in the event of a mains power failure.
• Industrial automation – powering PLC controllers, sensors and other automation devices.
• Emergency lighting – maintaining the operation of lighting in crisis situations.

The design of the power supply allows for mounting on a DIN rail (using appropriate brackets), which facilitates integration with existing electrical infrastructure. LED signaling informs about the operating status of the device and the battery charge level, which facilitates diagnostics and maintenance.

Safety and operating parameters

The power supply has been designed with safety and durability in mind. It has protections against short circuits, overloads and overvoltage on both the DC output and the AC input. It also protects the battery against discharge and reverse polarity connection. Operation in a wide range of input voltage (88-264V AC or 124-370V DC) ensures compatibility with various electrical networks around the world. The operating temperature from -10°C to +60°C allows operation in difficult environmental conditions. Efficiency at 84% minimizes energy losses and reduces operating costs.