Switching buffer power supply HPSB 27.6V/2A/2x7Ah HPSB-24V2A-B

Buffered impulse power supply – reliable power supply for security and access control systems

The HPSB-24V2A-B buffered power supply is a device designed to provide uninterrupted power to alarm systems, access control, monitoring and other devices requiring a stable 27.6V DC voltage. The power supply design allows for cooperation with two 7Ah batteries, which guarantees long-term operation even in the event of a mains power failure. The device is characterized by high efficiency (up to 90%) and a number of protections, protecting both connected devices and the power supply itself.

Construction and functionality

The HPSB-24V2A-B power supply is enclosed in a durable, metal housing (DC01 sheet metal, 0.7mm) painted white (RAL9003), adapted for surface mounting. Inside there is space for two batteries with a capacity of 7Ah each. This allows for extending the system operating time in the event of a power failure. The battery charging current is regulated using a jumper (0.2A/0.5A), which allows it to be adapted to the specifics of the batteries used. Optical LED signaling informs about the operating status of the device – the presence of mains voltage and battery charging.

Safety and protection

The power supply is equipped with comprehensive protections that minimize the risk of 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 deep battery discharge
• TAMPER – anti-sabotage protection (output signaling the opening of the housing)

Additionally, a polymer or fuse is used in the battery circuit for additional protection.

Key product features:

• Output voltage: 27.6 V DC
• Output current: 2.2 A
• Maximum power: 61 W
• Battery capacity: 2 x 7 Ah
• Efficiency: up to 90%
• Protections: SCP, OLP, OVP, UVP, tamper
• Mounting: surface mounting
• Housing: metal, IP20
• Signaling: LED

The use of high-quality components and a solid construction guarantee reliability and long life of the device. The HPSB-24V2A-B power supply is an ideal solution for professionals and users who value safety and power supply stability. The manufacturer's warranty is 2 years from the date of production.