Great Well / Mean Well 5V 55A 275W Industrial Switching Power Supply – High-Current LED Sign PSU

Overview

The Great Well 5V 55A Power Supply is a powerhouse built for demanding environments. Whether you are running a commercial LED billboard, a complex matrix of WS2812B/WS2815 LED strips, or industrial control logic, this unit provides the steady, clean DC current required to prevent flicker and voltage drop. Housed in a rugged, ventilated metal casing, it is designed for panel mounting inside cabinets or outdoor signs. It features an active PFC (Power Factor Correction) circuit to ensure energy efficiency and stable power delivery even when the grid fluctuates.

Key Features

• Massive 275W Output: Delivers a continuous 55 Amperes at 5V, giving you plenty of headroom for high-density LED projects.

• Universal AC Input: Accepts a wide range of input voltages (88V to 264V AC), making it compatible with varying power conditions across different regions.

• Industrial Safety Suite: Fully protected against short circuits, overloads, and over-voltage conditions, with an automatic recovery feature.

• Low Ripple & Noise: Engineered to output clean power, which is critical for preventing data corruption in digital LED strips and maintaining color consistency.

• Rugged Build: Constructed with a high-quality metal mesh chassis for optimal passive cooling and structural durability.

Technical Specifications 

Ideal Applications 

• Large Scale LED Signage: The primary choice for outdoor and indoor advertising screens.

• Massive LED Strip Arrays: Perfect for powering hundreds of addressable LEDs without needing multiple smaller power supplies.

• Industrial Automation: Supplies reliable power to PLCs, sensors, and heavy-duty relays.