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Mean Well HLG-40H-54A Power Supply 40W 54V - 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 Voltage54 Volt
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Rated Current0.75 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-54A to fine-tune output for sensitive 54V LED fixtures?
Yes. The A suffix means it has a built-in potentiometer to adjust output voltage and current. With a CC voltage range of 32-54V, you can trim the output to match the exact forward voltage of your 54V LED fixture, which is useful for optimizing brightness and efficiency.
Is the HLG-40H-54A suitable for a small indoor 54V LED track lighting system?
Yes. At 40W and 54V, it can drive a compact track lighting setup using 54V LED modules. The adjustable output lets you calibrate brightness precisely. Its IP65 rating makes it suitable for indoor or semi-protected installations.
Can the HLG-40H-54A power 54V LED modules in a display case or retail fixture?
Yes, as long as the total LED load stays within 40W. The built-in potentiometer lets you reduce output to achieve the desired display brightness without needing an external dimmer. The constant-current operation across 32-54V adapts well to varying LED forward voltages.
How many meters of 54V LED strip can the HLG-40H-54A power?
Divide 40W by your strip's power consumption per meter. A 54V strip rated at 8W/m would allow up to 5 meters (40W / 8W per meter = 5m). Always check your strip's rated power per meter and keep total load at or below 40W for safe operation.
Is the HLG-40H-54A appropriate for a damp bathroom or laundry room installation?
Yes. Its IP65 rating protects against dust and low-pressure water jets, which is sufficient for damp indoor spaces like bathrooms, laundry rooms, or utility areas. For locations with direct rain exposure or potential standing water, the IP67-rated HLG-40H-54 or HLG-40H-54B would be better suited.
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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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