Mean Well HLG-40H-12B 40W 12V DC LED Power Supply with 3-in-1 Dimming IP67

The Mean Well HLG-40H-12B is a high-performance 40W LED power supply featuring a constant voltage + constant current output of 12V DC and 3.34A. Designed for demanding indoor and outdoor applications, this IP67-rated driver offers 3-in-1 dimming (0-10V, PWM, resistance) and active PFC for high efficiency up to 90%. With a wide input range of 90~305VAC and comprehensive protections, it ensures reliable operation in extreme environments from -40°C to +80°C case temperature.

Advantages

This power supply delivers exceptional reliability with an MTBF over 180,000 hours, active power factor correction (PF>0.95), and full protection against short circuit, overload, over voltage, and over temperature. Its compact, fully encapsulated design makes it suitable for both indoor and outdoor use, while the 3-in-1 dimming function provides flexible control options for various lighting systems.

Suitable for

• LED lighting systems requiring constant voltage or constant current
• Industrial and commercial lighting installations
• Outdoor signage, street lighting, and landscape lighting
• Dimming applications with 0-10V, PWM, or resistance control

Key specifications

• Output Power: 40W
• Output Voltage: 12V DC
• Output Current: 3.34A
• Input Voltage: 90~305VAC / 127~431VDC
• Efficiency: 90%
• Dimming: 3-in-1 (0-10VDC, PWM, resistance)
• IP Rating: IP67
• Operating Temperature: -40~+80°C (case)
• Ripple & Noise: 150mVp-p
• Certifications: UL, CUL, TUV, CE, CB, RCM, EAC

Recommendations

For optimal performance, ensure proper heat dissipation and avoid exceeding the rated output. This driver is ideal for professional lighting projects requiring robust, dimmable power supplies.