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Mean Well HLG-40H-42A Power Supply 40W 42V - Adjustable
The HLG-40H is a 40W Mean Well power converter (input range: 90~305VAC).
Key Features
- ✓ Input voltage range: 90~305VAC
- ✓ DC output voltage adjustable ±10%
- ✓ 3.75KVAC reinforced I/O isolation
- ✓ Cooling by free air convection
- ✓ Protections: Short circuit / Over voltage / Over temperature
- ✓ Active PFC — meets international energy efficiency regulations
- ✓ Safety approvals: Note.8 SAFETY & EMC
- ✓ 3 years warranty
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BrandMean Well
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SeriesHLG Series
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Power Rating40 Watt
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Output Voltage42 Volt
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Rated Current0.96 Ampere
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Input Voltage90V~305V
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No of Output1
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Dimming ControlBuilt-in Potentiometer
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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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Length6.73 in
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Width2.42 in
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Height1.45 in
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Weight1.61 lb
::specification::
Frequently Asked Questions
Can I use the HLG-40H-42A for adjustable 42V LED strip lighting?
Yes. The HLG-40H-42A outputs 42V at up to 0.96A (40W) and includes a built-in potentiometer for trimming the output voltage and current. This is useful when you need to lower brightness slightly or match the driver output precisely to a specific 42V LED strip load.
Is the HLG-40H-42A suitable for fine-tuning 42V LED fixture brightness in a retail space?
Yes. The adjustable output lets you dial in the exact voltage and current for your 42V LED fixtures without needing an external dimmer. At 40W capacity, it handles small fixture runs typical of display-case or shelf lighting in retail environments.
Can the HLG-40H-42A power 42V LED modules for compact signage?
Yes, as long as total module power stays within 40W. The adjustable output is helpful for matching voltage precisely to your module string. The wide 90-305VAC input handles varying commercial mains voltages, and the constant-current mode with a 25-42V CC range provides stable drive.
How many meters of 42V LED strip can the HLG-40H-42A power?
It depends on the strip's power draw per meter. The HLG-40H-42A provides up to 40W at 42V. For example, a strip drawing 10W/m could run up to 4 meters (40W / 10W per meter = 4m). Check your strip's rated power per meter and keep the total under 40W.
Is the HLG-40H-42A suitable for a covered outdoor patio or awning installation?
Yes. Its IP65 water-resistant rating protects against dust and low-pressure water jets, which covers sheltered outdoor environments like patios, awnings, and ventilated enclosures. For fully exposed rain installations, the IP67-rated HLG-40H-42 or HLG-40H-42B would be more appropriate.
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Other HLG-40H Models
6 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well HLG-40H-12B Power Supply 40W 12V - Dimmable | 40W | 12V | 3.33A | IP67 | $38.39 | View |
| Mean Well HLG-40H-24B Power Supply 40W 24V - Dimmable | 40W | 24V | 1.67A | IP67 | $33.90 | View |
| Mean Well HLG-40H-24A Power Supply 40W 24V - Adjustable | 40W | 24V | 1.67A | IP65 | $37.32 | View |
| Mean Well HLG-40H-12 Power Supply 40W 12V | 40W | 12V | 3.33A | IP67 | $34.41 | View |
| Mean Well HLG-40H-15B Power Supply 40W 15V - Dimmable | 40.5W | 15V | 2.67A | IP67 | $35.33 | View |
| Mean Well HLG-40H-15A Power Supply 40W 15V - Adjustable | 40W | 15V | 2.67A | IP65 | $37.32 | View |
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