Mean Well HLG-120H-42AB Power Supply 120W 42V - Adjustable and Dimmable

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

Frequently Asked Questions

Can I pair with the HLG-120H-42AB to a building automation system for dimming 42V LED lights?

Yes. The HLG-120H-42AB accepts 1-10V or PWM dimming signals, making it compatible with building management systems and smart-lighting controllers that output standard dimming signals. At 120W and 42V with adjustable output, it fits well into centrally controlled commercial lighting installations.

Is the HLG-120H-42AB a good choice for dimmable 42V LED cove or accent lighting indoors?

Yes. The combination of adjustable output (via potentiometer) and 1-10V/PWM dimming input gives you precise brightness control for architectural cove lighting, accent lighting, or display cases running on 42V LEDs. The 120W capacity supports medium-length lighting runs at 42V.

Can the HLG-120H-42AB power a dimmable 42V LED retail display lighting setup?

Yes. With 120W at 42V, dimming capability, and adjustable output, the HLG-120H-42AB lets you fine-tune brightness for retail displays, showcases, or merchandising illumination. The 90-305VAC input handles worldwide mains, and the IP65 rating suits indoor and sheltered commercial environments.

How many meters of 42V LED strip can the HLG-120H-42AB handle?

The HLG-120H-42AB provides up to 120W at 42V. For a strip rated at 14.4W/m, you could run approximately 8.3 meters (120W / 14.4W per meter). Always check your strip's rated power per meter and keep total load at or below 120W.

Can the HLG-120H-42AB be used in a dusty workshop or manufacturing floor?

Yes. The IP65 rating provides complete protection against dust ingress and low-pressure water jets. This makes it suitable for workshops, light manufacturing environments, and clean rooms where airborne particles are present. For wet or fully exposed outdoor locations, choose an IP67-rated model instead.

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Model	Power	Voltage	Current	IP Rating
Mean Well HLG-120H-48A Power Supply 120W 48V - Adjustable 2.5A	120W	48V	2.5A	IP65	View

Customer reviews

4.9 Reviews verified for authenticity

5 ★ (19)

4 ★ (2)

3 ★ (0)

2 ★ (0)

1 ★ (0)

Reviewed by 21 customers across the HLG series

Best outdoor driver we use
By Hemi K.|2026-06-22✓ Verified Buyer
Model: HLG-240H-24Quantity: 6
HLG-240H-24 is IP67 and just keeps going. Powering a car-park flood install, 8 months no issues.
Premium, worth it
By Bright Spark|2026-06-01✓ Verified Buyer
Model: HLG-185H-24Quantity: 4
Built-in PFC, runs cool, DALI option on the B model. Our go-to.
Flawless
By Olivia D.|2026-05-09✓ Verified Buyer
Model: HLG-320H-48Quantity: 2
Drove a 48V architectural run for months, dead silent.

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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

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

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

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