Buffered switch-mode power supply Grade 2, ABS housing IP44, HPSG2H 13.8V/5A/17Ah HPSG2H-12V5A-C

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

This buffered power supply from Pulsar, model HPSG2H-12V5A-C, is a solid solution for ensuring continuous power to devices requiring a stable 12V DC voltage. It is ideally suited for alarm systems (SSWiN), access control (KD) and anywhere uninterrupted operation is critical. The design compliant with EN50131 Grade 2 standard guarantees a high level of safety and reliability.

Construction and functionality

The power supply is characterized by an ABS housing with an IP44 protection rating, which provides resistance to weather conditions and allows installation both indoors and outdoors. The durable housing protects against interference and mechanical damage. The device has a 13.8V DC output with a maximum current of 5A and a power of 69W. The built-in battery charging circuit allows the system to continue operating in the event of a mains power failure. The ability to set the battery charging current to 1A or 2A allows you to adapt the parameters to the specifics of the battery used.

Key features and benefits

• Buffer and battery operation: Automatic switching to battery power in the event of a mains power failure ensures the continuity of operation of connected devices.
• High efficiency: Efficiency at 87% translates to minimal energy losses and reduced heating of the device, which affects its lifespan and stability.
• Protections: Built-in SCP (short-circuit), OLP (overload), OVP (overvoltage), UVP (undervoltage) and tamper (anti-sabotage) protections protect both the power supply itself and the devices connected to it from damage.
• Optical signaling: An LED indicates the operating status of the power supply – the presence of mains voltage and the status of the battery.
• Technical outputs: It has EPS (AC mains failure) and APS (battery failure) relay-type technical outputs, allowing remote monitoring of the power supply status.
• Versatility: The possibility of mounting both on the surface and inside a hermetic enclosure increases installation flexibility.
• Compliance with standards: Meets the requirements of EN 50131 Grade 2 and EN 60839-11:2013 Grade 2 standards, which confirms its high quality and reliability in security systems.

Technical parameters

• Supply voltage: 200 – 240 V AC
• Output voltage: 13.8 V DC (buffer operating range: 11-13.8V DC; battery operating range: 10-13.8V DC)
• Output current: 5 A
• Maximum power: 69 W
• Battery charging current: 1 A / 2 A (set by jumper)
• Capacity of cooperating battery: 17 Ah / 12 V
• Dimensions: 238 x 308 x 130 mm (+/-2 mm)
• Protection class: IP44
• Operating temperature: -10°C ~ +40°C

The HPSG2H-12V5A-C power supply is an investment in the stable and safe operation of security systems – both for professional installers and end users who value reliability.