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Mean Well HLG-40H-54 Power Supply 40W 54V
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 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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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-54 to power 54V LED modules for outdoor signage?
Yes. The HLG-40H-54 delivers 54V at up to 0.75A (40W) with an IP67 waterproof rating, making it suitable for small outdoor sign applications using 54V LED modules. Its wide 90-305VAC input accommodates different mains supplies found in commercial installations.
Is the HLG-40H-54 suitable for driving a short run of 54V constant-current LED fixtures?
Yes. It operates in constant-current mode with a CC voltage range of 32-54V, so it can accommodate LED fixtures whose forward voltage falls within that range. The 40W maximum output limits it to smaller installations or single-fixture applications.
Can I use the HLG-40H-54 in a greenhouse or horticulture lighting setup?
Yes, provided your 54V LED grow lights draw 40W or less. The IP67 rating protects against the high humidity and water exposure common in greenhouses. However, note that the base model has no output adjustment or dimming, so you would need an external controller for brightness changes.
How many meters of 54V LED strip can the HLG-40H-54 support?
Divide 40W by your strip's rated power per meter. For example, a 54V strip consuming 5W/m could run up to 8 meters (40W / 5W per meter = 8m). Check your strip's rated power per meter and keep total draw at or below 40W.
Can the HLG-40H-54 handle freezing outdoor temperatures?
Yes. It is rated for an operating temperature range of -40°C to +80°C, so it can function reliably in sub-zero winter conditions. Combined with its IP67 waterproof rating and aluminium casing, it is built for exposed outdoor environments.
What are the differences between the HLG-40H-54, 54A, 54AB, and 54B variants?
All four share 40W / 54V / 0.75A core specs. The base HLG-40H-54 has no output adjustment or dimming and is IP67 waterproof. The -54A adds a built-in potentiometer for output adjustment (IP65). The -54AB adds both potentiometer adjustment and 1-10V/PWM dimming (IP65). The -54B adds dimming input only and retains IP67.
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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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