Over 15 years experience of providing support of MEAN WELL Power Supplies
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Mean Well HLG-40H-20B Power Supply 40W 20V - Dimmable
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 Control10V PWM,1-10V,Resistance
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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-20B for dimmable outdoor 20V LED pathway lighting?
Yes. The HLG-40H-20B outputs 20V at up to 2A (40W) with dimming capability and carries an IP67 waterproof rating. This makes it well suited for outdoor pathway or garden lighting where you want brightness control and full weather protection, including exposure to rain and temporary flooding.
Is the HLG-40H-20B a good fit for dimmable 20V LED signage in an exposed outdoor location?
It is a solid choice for small outdoor signs using 20V LEDs that need dimming capability. The IP67 waterproof housing handles rain, dust, and brief submersion, while the dimming input lets you reduce sign brightness at night to comply with local lighting ordinances or save energy. Total load must stay under 40W.
Can I use the HLG-40H-20B to drive dimmable 20V LED fixtures in a wet-rated location?
Yes. The IP67 rating certifies that the HLG-40H-20B is dust-tight and can withstand temporary immersion up to 1 meter for 30 minutes. It is appropriate for wet-rated locations such as car washes, fountain areas, or rain-exposed facades, provided total LED load does not exceed 40W.
How many meters of 20V LED strip can the HLG-40H-20B drive?
The HLG-40H-20B supplies up to 40W at 20V. Divide 40W by your strip's rated power per meter to determine maximum length. A strip rated at 5W per meter, for instance, could run up to 8 meters (40W / 5W per meter = 8m). Always check your strip's rated power per meter and stay within the 40W limit.
Can the HLG-40H-20B survive freezing temperatures in a northern climate?
Yes. The HLG-40H-20B is rated for an operating temperature range of -40°C to +80°C, so it handles extreme cold and heat. Combined with its IP67 waterproof rating, it is well suited for year-round outdoor use in northern climates where temperatures drop well below freezing.
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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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