Over 15 years experience of providing support of MEAN WELL Power Supplies
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Mean Well HLG-40H-30B Power Supply 40W 30V - 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 Voltage30 Volt
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Rated Current1.34 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-30B for dimmable 30V LED pathway or garden lighting?
Yes. The HLG-40H-30B delivers 30V at up to 1.34A (40W) with a 1-10V/PWM dimming input, letting you adjust brightness for pathway bollards or garden accent lights. Its IP67 waterproof rating means it can be installed outdoors in fully exposed locations without additional protection.
Is the HLG-40H-30B suitable for powering 30V LED strips on a building facade?
Yes, as long as the total strip load does not exceed 40W. The IP67 waterproof rating and aluminium casing withstand direct rain, snow, and UV exposure. The dimming input allows you to reduce brightness during late-night hours for energy savings or light-pollution compliance.
Can the HLG-40H-30B power 30V LED modules in a refrigerated display?
Yes. The operating temperature range of -40°C to +80°C covers freezer and cooler environments, and IP67 protects against condensation and washdown moisture. At 40W output it can drive small 30V LED module arrays commonly used in refrigerated merchandising displays.
How many meters of 30V LED strip can the HLG-40H-30B drive?
That depends on the strip's wattage per meter. The HLG-40H-30B supplies up to 40W at 30V. A strip rated at 8W/m could run 5 meters (40W / 8W per meter = 5m). A strip at 14W/m would allow about 2.8 meters. Always verify your strip's rated power per meter and keep total load within 40W.
How well does the HLG-40H-30B handle extreme temperature environments?
The HLG-40H-30B is rated for operation from -40°C to +80°C, covering everything from deep-freeze installations to hot rooftop equipment enclosures. Combined with IP67 waterproofing and an aluminium heat-dissipating casing, it is built for harsh environments where temperature swings and moisture are common.
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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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