• Rated Power: 121.8 W
• Output Voltage (DC): 42 V
• Rated Current: 2.9 A
• Input Voltage Range: 90 – 305 V AC / 127 – 431 V DC
• Efficiency (typ.): 93 %
• Ripple & Noise (max.): 200 mVp-p
• Constant Current Region: 21 – 42 V
• Operating Temp. (Case): −40 °C to +80 °C
• IP Rating: IP67 (fully dust-tight and waterproof)
• Dimming Technology: 3-in-1 dimming (1–10V DC, 10V PWM signal, or resistance)
• Manufacturer Warranty: 7 Years

Information about the MEAN WELL HLG-120H-42B

The MEAN WELL HLG-120H-42B is a high-performance 120W LED driver designed for smart lighting architectures requiring remote brightness control and high environmental durability. As a "B-Type" model, it features a dedicated dimming wire for integrated 3-in-1 dimming. This functionality allows users to regulate light intensity via a 1–10V DC signal, a 10V PWM signal, or external resistance.

Engineered for maximum reliability, the HLG-120H-42B features a fully potted metal enclosure with an IP67 rating. This level of sealing ensures the unit is completely protected against dust and water ingress, making it suitable for high-exposure outdoor installations and harsh industrial environments. It utilizes a dual-mode constant voltage and constant current output, providing 93% efficiency and built-in active Power Factor Correction (PFC).

The fanless thermal design utilizes natural air convection for cooling, enabling silent operation and a lifespan exceeding 62,000 hours. Backed by a 7-year manufacturer warranty and carrying the "Type HL" rating for hazardous locations, the HLG-120H-42B is a premier choice for dimmable street lighting, high-bay luminaires, and specialized industrial lighting systems.