Power Supply Unit PLANET PWR-120-48 120W Blue Grey

The PLANET PWR-120-48 is a compact DIN-rail power supply that delivers 48V DC at up to 120W. It accepts a universal AC input of 100–240V (50/60Hz) or DC input, features passive free-air convection cooling and a fixed switching frequency of 55 kHz. The unit is designed for industrial Ethernet and control equipment, fits on TS-35 DIN rails (7.5 or 15), and carries UL 508 and TUV EN60950-1 safety certifications. Its small form factor (40 mm × 125 mm × 113 mm) makes it suitable where space is limited.

Advantages

The PWR-120-48 provides stable 48V DC output with multiple built-in protections including short-circuit, overload, over-voltage and over-temperature protection. Passive cooling enables quiet operation and wide operating temperature range (−20 to 70 °C), while a power-on LED and 100% full-load burn-in test ensure reliable performance. AC input range selection by a switch and universal input compatibility simplify installation across different sites.

Suitable for

• Industrial Ethernet switches and routers
• Control and automation equipment
• DIN-rail mounted instruments and modules

Key specifications

• Output: 48V DC, 120W
• AC input: 100–240V AC, 50/60Hz (selectable range by switch)
• Cooling: free-air convection (passive)
• Protections: short circuit, overload, over-voltage, over-temperature
• Mounting: DIN rail TS-35/7.5 or 15
• Safety: UL 508 and TUV EN60950-1 certified
• Dimensions: 40 mm (W) × 125 mm (D) × 113 mm (H)
• Fixed switching frequency: 55 kHz
• Indicator: power-on LED

How to use

Mount the PWR-120-48 on a TS-35 DIN rail and connect the AC supply within the specified 100–240V range (observe input range switch if present). Connect the 48V DC output to the target device observing correct polarity and rated current limits. Ensure adequate ventilation around the unit for passive cooling and verify the power-on LED after energizing. Follow local wiring codes and isolate power before maintenance.

Recommendations

Install the unit in a dry, dust-reduced location with at least a few centimetres of clearance for airflow. Avoid placing the power supply near heat sources; regularly inspect terminals and wiring for secure connections. Use within the specified temperature range and rely on the built-in protections for typical industrial environments.