Buffered switch-mode power supply for built-in PSB 13.8V/20A PSB-12V20A

Reliable power supply for security systems and more

The PSB 13.8V/20A buffer power supply is a solid solution for providing uninterrupted power to devices requiring a stable 12V DC voltage. It is ideal for alarm systems, access control, video surveillance, and applications requiring high power supply reliability. The device is characterized by high efficiency and advanced protection functions for both connected devices and the battery.

Design and functionality

The power supply is designed for mounting inside enclosures or on a DIN rail (DIN4 bracket required, available separately). High efficiency (86%) translates to lower energy losses and lower operating costs. The built-in power factor correction (PFC) circuit improves the quality of current drawn from the mains. Switchable battery charging current (2A/4A/8A) allows you to adjust the parameters to the specifics of the battery used and system requirements. Optical LED signaling informs about the presence of AC and DC voltage and about the battery charging process.

Safety and protection

The PSB 13.8V/20A power supply is equipped with a number of protections to prevent damage and ensure safe operation:

• SCP (Short Circuit Protection) – short circuit protection
• OLP (Overload Protection) – overload protection
• OVP (Over Voltage Protection) – overvoltage protection
• UVP (Under Voltage Protection) – protection against too low battery voltage
• OHP (Over Heat Protection) – thermal protection

Additionally, the power supply has battery protection against deep discharge and overvoltage protection of the AC input. The set includes cables for connecting batteries with a cross-section of 6mm².

Key features:

• Wide AC input voltage range: 200-240V
• Maximum output current: 20A (total current of receivers + battery charging)
• Adjustable output voltage: 13.5-14.5V DC
• Possibility of mounting on a DIN rail (DIN4 bracket available separately)
• High efficiency: 86%
• Built-in PFC circuit
• Optical LED signaling
• Complete protection: SCP, OLP, OVP, UVP, OHP
• Switchable battery charging current: 2A/4A/8A
• Battery connection cables included.

The PSB-12V20A power supply is a reliable power source for demanding applications, ensuring the safety and continuity of alarm systems and other devices.