MEAN WELL LRS-50-3.3 33W 3.3V 10A Enclosed Switching Power Supply

In industrial control cabinets and automation systems, the MEAN WELL LRS-50-3.3 delivers stable 3.3V DC power for sensors, microcontrollers, and low-voltage logic circuits. This compact metal-enclosed power supply fits neatly into tight DIN-rail or chassis spaces, providing reliable performance in harsh environments.

Key specifications

• Output: 3.3V DC, 10A, 33W maximum
• Input: 85–264V AC or 120–370V DC (universal)
• Efficiency: up to 80%
• Protections: overload, overvoltage, short circuit (hiccup mode, auto-recovery)
• Cooling: free air convection, no fan required
• Operating temperature: -30°C to +70°C
• Certifications: UL60950-1, TUV EN60950-1, CB, CE
• Mounting: chassis mount with screw terminals

Why choose it

The LRS-50-3.3 is built for longevity and safety. Its metal housing and full-protection design ensure uninterrupted operation even under fluctuating input or load conditions. With a wide input range and high reliability, it reduces downtime and maintenance costs in industrial applications.

Ideal use cases

• Powering 3.3V logic boards in PLC systems
• Supplying stable DC to sensors and actuators
• Embedded systems and test fixtures
• LED lighting control circuits

Good to know

This power supply is part of the MEAN WELL LRS series, known for its compact size and high efficiency. It operates silently without a fan, making it suitable for noise-sensitive environments. The screw terminal connections allow secure wiring for permanent installations.