MEAN WELL RS-50-12 50W 12V DC Enclosed Switching Power Supply

Industrial and automation projects often face unstable power delivery, voltage spikes, or insufficient current, leading to equipment malfunction or premature failure. The MEAN WELL RS-50-12 solves this by providing a reliable, regulated 12V DC output from a wide range of AC or DC inputs, ensuring your sensitive electronics operate smoothly even in demanding environments.

Who is it for

This power supply is ideal for system integrators, machine builders, and electronics enthusiasts who need a compact, chassis-mountable 50W power source for LED lighting, control circuits, sensors, or communication devices. It suits both industrial control panels and DIY projects requiring a stable low-voltage rail.

Main features

• Universal AC input range: 88–264 VAC (or 125–373 VDC) with 47–63 Hz frequency, making it usable worldwide without switches.
• High efficiency up to 82% and free air convection cooling – no fan means silent operation and reduced maintenance.
• Built-in protections: overload, over voltage, and short circuit, with automatic recovery.
• Adjustable output voltage: ±10% (10.8–13.2 V) via built-in potentiometer for fine-tuning.
• Low ripple and noise: 120 mVp-p, ensuring clean power for sensitive loads.
• Complies with UL 60950-1 and TUV EN 60950-1 safety standards, and EN 55022 Class B EMC.
• Compact enclosed chassis (silver) with screw terminals for secure wiring.

Specifications

• Output power: 50.4 W
• Output voltage: 12 V DC
• Output current: 4.2 A
• Input voltage: 88–264 VAC / 125–373 VDC
• Input frequency: 47–63 Hz
• Efficiency: 82%
• Cooling: Passive (free air convection)
• Operating temperature: -25 to 70 °C
• Withstand voltage: I/P-O/P 3kVAC, I/P-FG 1.5kVAC, O/P-FG 0.5kVAC
• MTBF: >700,000 hrs (MIL-HDBK-217F)
• Dimensions: 99 x 97 x 36 mm (L x W x H)
• Weight: 0.41 kg

Tips

For best performance, mount the unit on a flat metal surface to aid heat dissipation and ensure at least 20 mm clearance around ventilation holes. Use appropriate wire gauges for input and output connections, and adjust the output voltage only when the unit is powered off to avoid damage. This PSU is not suitable for outdoor use unless protected from moisture.