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Mean Well HLG-40H-20A Power Supply 40W 20V - 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 Voltage20 Volt
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Rated Current2 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-20A for indoor 20V LED cabinet lighting with adjustable brightness?
Yes. The HLG-40H-20A delivers 20V at up to 2A (40W) and includes a built-in potentiometer for adjusting output voltage and current. This makes it practical for cabinet or under-counter lighting where you want to dial in the exact brightness without an external dimmer.
Is the HLG-40H-20A a good fit for 20V LED cove lighting in a commercial space?
It is well suited for compact cove lighting installations using 20V LED strips that draw up to 40W total. The adjustable output lets you fine-tune the current within the 12-20V constant-current range to optimize brightness for the specific LED load. For larger runs, consider higher-wattage HLG-H models in the series.
Can I power a 20V LED display case with the HLG-40H-20A?
Yes, provided the display lighting draws 40W or less. The HLG-40H-20A outputs 20V at up to 2A, and the adjustable output lets you set the precise operating point for your display LEDs. Its compact 171 x 61.5 x 36.8 mm form factor fits inside most display enclosures.
How many meters of 20V LED strip can the HLG-40H-20A drive?
The HLG-40H-20A supplies up to 40W at 20V. Divide 40W by your strip's wattage per meter to get the maximum length. For instance, a strip rated at 8W per meter would allow up to 5 meters (40W / 8W per meter = 5m). Always check your strip's rated power per meter and stay within the 40W limit.
Can the HLG-40H-20A be used in a covered outdoor patio?
The HLG-40H-20A carries an IP65 water-resistant rating, which protects against dust and low-pressure water jets. A covered patio or sheltered outdoor area is generally fine, but it should not be placed where it could be submerged or exposed to heavy direct water spray. For fully exposed outdoor use, the IP67-rated HLG-40H-20 or HLG-40H-20B is a better choice.
What does the 'A' suffix mean on the HLG-40H-20A compared to the base HLG-40H-20?
The 'A' suffix indicates the model includes a built-in potentiometer for adjusting output voltage and current. The base HLG-40H-20 has fixed output. The A variant carries an IP65 water-resistant rating instead of the base model's IP67 waterproof rating. Both deliver the same 40W, 20V, 2A output at their default settings.
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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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