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Mean Well HLG-120H-42 Power Supply 120W 42V
The HLG-120H is a 120W Mean Well power converter (input range: 90~305VAC, operating temperature: -40~+80℃).
Key Features
- ✓ Input voltage range: 90~305VAC
- ✓ DC output voltage adjustable ±10%
- ✓ 3.75KVAC reinforced I/O isolation
- ✓ Cooling by free air convection
- ✓ Wide operating temperature: -40~+80℃
- ✓ Protections: Short circuit / Over voltage / Over temperature
- ✓ Active PFC — meets international energy efficiency regulations
- ✓ Safety approvals: Note.8 SAFETY &
- ✓ 3 years warranty
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BrandMean Well
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SeriesHLG Series
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Power Rating120 Watt
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Output Voltage42 Volt
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Rated Current2.9 Ampere
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Input Voltage90V~305V
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No of Output1
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Dimming ControlNone
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Standards MetCB,CCC,CE,EAC,PSE,RCM,TUV,UL
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Operation ModeConstant Current,Constant Voltage
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Operating Temperature-40°C~80°C
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Warranty7 Year
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Length8.66 in
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Width2.68 in
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Height1.53 in
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Weight2.47 lb
::specification::
Frequently Asked Questions
Can I use the HLG-120H-42 to power 42V LED panel lights in a commercial ceiling?
Yes. The HLG-120H-42 delivers 42V at up to 2.9A (120W), which is well matched to 42V LED panel lights and troffers commonly used in office and commercial ceilings. The 90-305VAC input supports worldwide mains voltages, and the 7-year warranty adds long-term reliability for commercial installations.
Is the HLG-120H-42 suitable for powering 42V LED high-bay fixtures in a warehouse?
Yes. At 120W and 42V constant-current output, the HLG-120H-42 can drive medium-wattage 42V high-bay luminaires. The IP67 waterproof rating and aluminium casing allow installation in dusty or damp warehouse environments, and the -40°C to +80°C range covers unheated facilities.
Can the HLG-120H-42 drive outdoor 42V LED flood lights or area lights?
Yes. The IP67 waterproof rating protects the driver from rain, snow, and dust, making it suitable for outdoor flood light and area light applications. The 120W output at 42V provides enough power for medium-intensity 42V LED flood fixtures, and the wide operating temperature range handles seasonal extremes.
How many meters of 42V LED strip can the HLG-120H-42 support?
Divide 120W by your strip's rated power per meter. For instance, a 42V strip drawing 15W/m could be run up to 8 meters (120W / 15W per meter). Always check your strip's specifications and keep the total load at or below 120W.
Can the HLG-120H-42 operate in an unheated outdoor enclosure during winter?
Yes. The HLG-120H-42 has an operating temperature range of -40°C to +80°C, so it handles sub-zero winter conditions without issue. The IP67 waterproof rating also protects against moisture from condensation, ice melt, or precipitation inside an outdoor enclosure.
What are the differences between the HLG-120H-42, 42A, 42AB, and 42B variants?
All four share the same 120W / 42V / 2.9A core specs and CC voltage range of 21-42V. The base HLG-120H-42 has fixed output and IP67 waterproof rating. The -42A adds output voltage/current adjustment via built-in potentiometer (IP65). The -42AB adds both adjustment and 1-10V/PWM dimming input (IP65). The -42B offers dimming input only and retains IP67 waterproof rating.
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Other HLG-120H Models
1 other model| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well HLG-120H-15A Power Supply 120W 15V - Adjustable | 120W | 15V | 8A | IP65 | $54.29 | View |
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