BOSCH PRS-48CH12 12-channel 48V power supply

48V 12-Channel Power Supply BOSCH PRS-48CH12

The BOSCH PRS-48CH12 power supply is a device designed to provide power and charge backup batteries for public address and emergency sound systems. This device ensures that the system operates continuously even during power outages, delivering a stable 48V DC output across 12 channels, thus ensuring reliable energy for systems that require high continuity and reliability in critical situations.

Key Features:

High Power and Performance

It supplies 48V DC with a maximum charging current of 12A, meeting the energy needs of large systems such as fire alarms, security cameras, and other devices that require stable power.

Multi-layer Protection

• Overload, Overvoltage, and Short Circuit Protection: The device is equipped with safety mechanisms to protect both the power supply and the devices powered by it.
• Automatic Shutdown on Fault Detection: In case of overload or short circuit, the power supply will automatically shut down to protect the equipment from damage.

Backup Battery Charging Function

In addition to providing direct power, the device is integrated with a backup battery charging capability, with a backup current of up to 150A, ensuring the system continues to operate even during power failures, preventing interruptions in critical systems such as security and fire alarms.

Flexible Outputs

It features 6 main outputs of 24V DC at 40A and 3 auxiliary outputs of 24V DC at 5A.

Safety Certification

The device is fully supervised and certified according to the EN 54-4 international standard for fire alarm systems, ensuring high safety and reliability.

Specifications

Electrical Specifications:

• Input Voltage: 195 to 264 VAC, 50 to 60Hz
• Input Current (PLN-24CH12): 4A
• Power Consumption: 760W maximum
• Voltage Min. (Auto Shutdown): 43.2 VDC
• Voltage Max.: 56.9 VDC
• Max Charge Current: 12 A
• Max System Current (Ib): 150 A

Battery-Related:

• Battery Voltage: 24 or 48 VDC
• System Current: 40 A
• Charge Current: 5 A

Contact Ratings:

• Rating: 24 V/1 A, 120VAC/500 mA (voltage-free)
• Contacts: Normally energized (failsafe)

Physical Characteristics:

• Dimensions (H x W x D): 88 x 483 x 340 mm (19" rack, 2U height)
• Input Connections: Screw terminal (connect to battery)
• Output Connections: 10 x pluggable screw connector (connect to system)
• Weight: Approx. 6 kg
• Mounting: 19” rack
• Color: Charcoal with silver

Environmental:

• Relative Humidity: <95% (operating and storage)
• Operating Temperature: -5 ºC to +45 ºC (23 ºF to +113 ºF)
• Storage & Transport Temperature: -25 ºC to +85 ºC (-13 ºF to +185 ºF)