Switching buffered power supply for built-in PSB 54V/3A PSB-48V3A

Backup power supply for security and automation systems. The Pulsar PSB-48V/3A buffered power supply is a reliable power source for devices requiring a stable 48V DC voltage. It is ideal for monitoring, alarm, access control systems, as well as building automation. Its modular design allows for easy installation and integration with existing infrastructure. It is important to remember that connecting four 12V batteries in series is necessary for the power supply to function correctly.

Versatility and functionality

Designed for continuous operation, the PSB-48V3A power supply provides uninterrupted power even in the event of a mains power failure. It automatically switches to battery power, guaranteeing the continuity of operation of connected devices. The battery charging current can be adjusted using a jumper (0.5A or 1A), allowing it to be adapted to the specifics of the batteries used and extending their lifespan. An LED optical indicator informs about the presence of mains voltage.

Safety and protection

The power supply is equipped with a number of protections that protect both connected devices and the power supply itself from damage. These include: short-circuit protection (SCP), overload protection (OLP), overvoltage protection (OVP), and over-discharge protection (UVP). In addition, reverse polarity protection minimizes the risk of incorrect installation. Efficiency at 90% translates to lower energy losses and stable operation. The set includes cables for connecting batteries with angled lugs, which facilitates installation.

Key features:

• Output power: 162W at 54V DC and 3A current (total output current with charging).
• Voltage regulation: Possibility of regulating the output voltage in the range of 53-56VDC.
• Application: Ideal for CCTV, SSWiN, access control systems, video doorphones and other devices requiring a stable 48V DC power supply.
• Protections: SCP, OLP, OVP, UVP – comprehensive protection for devices and the power supply itself.
• Mounting: Possibility of mounting for built-in or DIN rail (DIN3 bracket required).
• Signaling: LED indicating the presence of mains voltage.
• Dimensions: 199 x 110 x 50 mm – compact size makes installation easier even in limited space.