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Mean Well HLG-40H-42B Power Supply 40W 42V - 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 Voltage42 Volt
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Rated Current0.96 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 the HLG-40H-42B power dimmable 42V LED strips in a fully outdoor setting?
Yes. The HLG-40H-42B provides 40W at 42V with a 1-10V/PWM dimming input, and its IP67 waterproof rating allows direct exposure to rain, snow, and temporary water submersion. This makes it well suited for outdoor decks, walkways, or garden lighting with dimming control.
Is the HLG-40H-42B appropriate for dimmable 42V LED landscape accent lights?
Yes. At 40W it can drive small 42V landscape fixtures, and the dimming input lets you adjust brightness for evening ambiance. The IP67 rating and -40°C to +80°C operating range handle ground-level moisture and wide temperature swings common in landscape applications.
Can I use the HLG-40H-42B for a 42V outdoor LED sign with brightness scheduling?
Yes, as long as the sign draws no more than 40W total. The 1-10V/PWM dimming input can be connected to a timer or controller for automatic day/night brightness changes. The IP67 rating means the driver can be mounted inside or outside the sign enclosure without weather concerns.
How many meters of 42V LED strip can the HLG-40H-42B support?
It depends on the strip's power per meter. The HLG-40H-42B supplies up to 40W at 42V. For instance, a strip rated at 10W/m could run up to 4 meters (40W / 10W per meter = 4m). Verify your strip's rated power per meter and ensure total draw stays at or below 40W.
How well does the HLG-40H-42B hold up in freezing winter conditions?
The HLG-40H-42B is rated for an operating temperature range of -40°C to +80°C, so it handles extreme cold without issue. Combined with its IP67 waterproof seal, it can withstand snow, ice, and freezing rain without requiring additional weatherproofing.
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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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