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Mean Well HLG-240H-42AB Power Supply 240W 42V - Adjustable and Dimmable
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Mean Well HLG-240H-42AB Power Supply 240W 42V - Adjustable and Dimm...
The HLG-240H is a 240W 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
- ✓ 3 years warranty
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BrandMean Well
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SeriesHLG Series
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Power Rating240 Watt
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Output Voltage42 Volt
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Rated Current5.72 Ampere
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Input Voltage90V~305V
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No of Output1
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Dimming Control10V PWM,1-10V,Built-in Potentiometer,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~90°C
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Warranty7 Year
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Length9.61 in
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Width2.68 in
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Height1.53 in
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Weight2.87 lb
::specification::
Frequently Asked Questions
Can I use the HLG-240H-42AB to power and dim 42V LED panels in a commercial space?
Yes. The AB suffix provides both output voltage/current adjustment and dimming input (1-10V/PWM). At 240W and 42V, it can drive 42V LED panel arrays while accepting dimming commands from a commercial lighting controller or building management system.
Is the HLG-240H-42AB a good choice for dimmable 42V horticultural LED lighting?
Yes. The 240W output at 42V suits many quantum board and COB grow light setups. The built-in potentiometer lets you set the baseline drive level, and the 1-10V/PWM dimming input allows automated light cycle control via a grow room controller. The CC voltage range of 21-42V supports smooth dimming.
Can I use the HLG-240H-42AB for 42V architectural accent lighting with scene control?
Yes. The dimming input accepts standard 1-10V or PWM signals from scene controllers, making it suitable for lobby accents, display lighting, or retail environments. The adjustable output via potentiometer lets you set a maximum brightness level, and the dimming input controls the range below that point.
Does the HLG-240H-42AB work in a sheltered outdoor setting like a covered walkway?
Yes. The IP65 water-resistant rating protects against dust ingress and low-pressure water jets. It is suitable for covered walkways, pergolas, and carports. For fully rain-exposed or submersion-risk locations, the IP67-rated HLG-240H-42B offers stronger water protection.
How many meters of 42V LED strip can the HLG-240H-42AB support?
Divide 240W by your strip's rated power per meter. A strip rated at 18W/m would allow about 13.3 meters (240W / 18W per meter = 13.33m). Always verify your strip's rated power per meter and keep the total load at or below 240W for reliable operation.
What are the differences between the HLG-240H-42, 42A, 42AB, and 42B variants?
All four share the same 240W / 42V / 5.72A core specs. The base HLG-240H-42 has fixed output and IP67 waterproof rating. The -42A adds output adjustment via potentiometer (IP65). The -42AB adds both adjustment and 1-10V/PWM dimming input (IP65). The -42B provides dimming input only and retains the IP67 waterproof rating.
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Other HLG-240H Models
7 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well HLG-240H-24 Power Supply 240W 24V | 240W | 24V | 10A | IP67 | $72.97 | View |
| Mean Well HLG-240H-12A Power Supply 192W 12V - Adjustable | 192W | 12V | 16A | IP65 | $59.00 | View |
| Mean Well HLG-240H-12 Power Supply 192W 12V | 192W | 12V | 16A | IP67 | $62.51 | View |
| Mean Well HLG-240H-48A Power Supply 240W 48V - Adjustable | 240W | 48V | 5A | IP65 | $72.97 | View |
| Mean Well HLG-240H-42B Power Supply 240W 42V- Dimmable | 240W | 42V | 5.72A | IP67 | $64.45 | View |
| Mean Well HLG-240H-42A Power Supply 240W 42V - Adjustable | 240W | 42V | 5.72A | IP65 | $72.97 | View |
| Mean Well HLG-240H-24A Power Supply 240W 24V - Adjustable | 240W | 24V | 10A | IP65 | $72.62 | View |
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