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Mean Well HLG-120H-42A Power Supply 120W 42V - Adjustable 2.9A

Name: Mean Well HLG-120H-42A Power Supply 120W 42V - Adjustable 2.9A
Brand: Mean Well
SKU: HLG-120H-42A
Price: 53.27 USD
Availability: InStock
Rating: 5.0 (1 reviews)

5.0 (1 review)

premium quality7 years warrantyaluminium casinghigh efficiency

SKU HLG-120H-42A

$53.27 USD

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The HLG-120H is a 120W Mean Well AC-DC LED driver (input: 90~305VAC, output: 42V, operating temperature: -40~+80°C).

Key Features

✓ Input voltage: 90~305VAC
✓ Output voltage: 42V
✓ Rated output current: 2.9A
✓ Ingress protection: IP65
✓ Operating temperature: -40~+80°C
✓ Safety certifications: CB, CCC, CE, EAC, PSE, RCM, TÜV, UL
✓ 7 year warranty

Brand

Mean Well
Series

HLG Series
Power Rating

120 Watt
Output Voltage

42 Volt
Rated Current

2.9 Ampere
Input Voltage

90V~305V
No of Output

1
Dimming Control

Built-in Potentiometer
Standards Met

CB,CCC,CE,EAC,PSE,RCM,TUV,UL
Operation Mode

Constant Current,Constant Voltage
Operating Temperature

-40°C~80°C
Warranty

7 Year
Length

8.66 in
Width

2.68 in
Height

1.53 in
Weight

2.47 lb

Frequently Asked Questions

Can I use the HLG-120H-42A to fine-tune the voltage for a 42V LED panel array?

Yes. The HLG-120H-42A includes a built-in potentiometer that lets you adjust the output voltage and current within the 21-42V CC range. This is useful when you need to match the driver precisely to a specific 42V LED panel or module string for optimal brightness and efficiency.

Is the HLG-120H-42A suitable for indoor commercial 42V LED troffer installations?

Yes. At 120W and 42V with adjustable output, the HLG-120H-42A can drive 42V LED troffers and panel lights in office or retail ceilings. The IP65 water-resistant rating handles above-ceiling environments where dust and occasional condensation are present.

Can the HLG-120H-42A power 42V LED modules in a large backlit sign or display?

Yes. With 120W at 42V, the HLG-120H-42A provides enough power for a substantial array of 42V LED sign modules. The adjustable output allows you to dial in the exact operating point, and the 90-305VAC input accommodates most commercial mains supplies worldwide.

How many meters of 42V LED strip can the HLG-120H-42A drive?

Divide 120W by your strip's power consumption per meter. For example, a 42V strip rated at 12W/m allows up to 10 meters (120W / 12W per meter = 10m). Always check your strip's rated power per meter and keep total load at or below 120W.

Is the HLG-120H-42A appropriate for a covered parking structure or carport?

Yes. The IP65 rating protects against dust and low-pressure water jets from any direction, which is sufficient for sheltered outdoor or semi-enclosed environments like parking garages, carports, and covered walkways. For fully exposed outdoor locations with heavy rain, an IP67-rated variant such as the HLG-120H-42 or HLG-120H-42B is recommended.

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Model	Power	Voltage	Current	IP Rating	Price
Mean Well HLG-120H-15A Power Supply 120W 15V - Adjustable 8A	120W	15V	8A	IP65	$54.29	View
Mean Well HLG-120H-12B Power Supply 120W 12V - Dimmable 10A	120W	12V	10A	IP67	$55.65	View

Customer reviews

5.0 Reviews verified for authenticity

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Reviewed by 1 customer across the HLG series

Excellent product!
By J. Vega|2026-07-20✓ Verified Buyer
Model: HLG-185H-30Quantity: 1
Exactly what I needed to revive my dead Maytronics Dolphin power supply!

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