Mean Well HLG-100H-42AB 100W 42V Power Supply - Constant Voltage + Constant Current LED Driver

The HLG-100H is a 100W 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: 2.28A
✓ 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 use the HLG-100H-42AB with a 0-10V dimmer for 42V LED retail display lighting?

Yes. The HLG-100H-42AB supports dimming via 1-10V, PWM, and resistance signals, making it compatible with standard 0-10V dimming systems. This allows smooth brightness control on 42V LED retail displays while handling up to 100W total load.

Is the HLG-100H-42AB a good choice for dimmable 42V LED architectural accent lighting?

It is well suited for architectural accent applications where you need both fine output tuning and scene-based dimming. The built-in potentiometer sets the baseline output, while the dimming input enables dynamic brightness control. Total load must stay at or below 100W at 42V.

Can I power a dimmable 42V LED light box or backlit sign with the HLG-100H-42AB?

Yes, provided the light box draws 100W or less. The HLG-100H-42AB delivers 42V at up to 2.28A with adjustable output and dimming capability. The dimming input lets you reduce brightness for ambient settings or to save energy during off-peak hours.

How many meters of 42V LED strip can the HLG-100H-42AB drive while dimming?

The maximum strip length is determined by the driver's 100W capacity, not the dimming level. Divide 100W by your strip's rated wattage per meter. A strip rated at 10W/m would allow up to 10 meters (100W / 10W per meter = 10m). Always check your strip's rated power per meter.

Can I install the HLG-100H-42AB in an outdoor sign enclosure?

The HLG-100H-42AB is rated IP65, which protects against dust and low-pressure water jets. It is suitable for enclosed or semi-enclosed outdoor sign cabinets. For fully exposed installations where submersion or heavy water ingress is possible, the IP67-rated HLG-100H-42B with dimming may be a better fit.

What makes the HLG-100H-42AB different from the 42A and 42B models?

The -42AB combines both features: adjustable output (potentiometer) and dimming input (1-10V/PWM/resistance), with an IP65 water-resistant rating. The -42A has adjustable output only (no dimming) at IP65. The -42B has dimming only (no potentiometer adjustment) at IP67 waterproof. All share the same 100W, 42V, 2.28A core specs.

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Model	Power	Voltage	Current	IP Rating
Mean Well HLG-100H-24A Power Supply 100W 24V - Adjustable 4A	100W	24V	4A	IP65	View
Mean Well HLG-100H-48B Power Supply 100W 48V - Dimmable 2A	100W	48V	2A	IP67	View
Mean Well HLG-100H-48 Power Supply 100W 48V 2A	100W	48V	2A	IP67	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: 2.28A

✓ Ingress protection: IP65

✓ Operating temperature: -40~+80°C

✓ Safety certifications: CB, CCC, CE, EAC, PSE, RCM, TÜV, UL

✓ 7 year warranty

Mean Well HLG-100H-42AB Power Supply 100W 42V - Adjustable and Dimmable 2.28A

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Mean Well HLG-100H-42AB Power Supply 100W 42V - Adjustable and Dimmable 2.28A

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