12V 20A 250W Switching Power Supply with Cooling Fan

This 250W power supply turns mains AC into a steady 12V DC output at up to 20A. That’s enough to run several devices at once from one unit. A built-in fan keeps it cool during long, heavy use, so it suits workshops, shops and installations that stay on all day.

It is at least 85% efficient and has low ripple, so it delivers clean, stable power to sensitive electronics. Built-in protection guards both the power supply and your equipment if something goes wrong.

Key Features

• 12V DC output, 20A max, 250W. It can run multiple high-current loads.
• Built-in cooling fan. It stays cool under heavy, continuous use.
• 110V/220V selector switch. It works on Ghana’s 230V mains and on 110V supplies.
• High efficiency (≥ 85%). Less wasted energy and less heat.
• Low ripple and noise (< 120mVp-p). Clean power for electronics.
• Full protection. Overload, overvoltage and short-circuit protection.
• Aluminium alloy case. It’s durable and helps spread heat.
• Screw terminals. Mains and output wires are easy to connect securely.

Specifications

Wiring Guide

Important safety notes:

• ⚠️ Set the input switch to 220V before connecting to Ghana mains. If it’s left on 110V, the unit will be damaged.
• Always disconnect mains power before you wire or touch the terminals.
• Connect the earth (GND) terminal for safety.
• Use wire thick enough for the current. 2.5mm² or thicker is recommended on the output for loads close to 20A.
• Keep the fan and vents clear so air can flow.
• For long-term reliability, aim to keep the continuous load around 80% of the rating (about 16A).

Applications

• LED strips, signage and lighting
• CCTV cameras and security systems
• 3D printers and CNC machines
• Motor drivers and robotics projects
• Car audio and 12V equipment testing
• Bench power for electronics workshops

Package Includes

• 1 × 12V 20A 250W Power Supply with Fan
• 1 × User connection guide