Mean Well HLG-240H-42AB 240W Power Supply 42V - Adjustable & Dimmable

The HLG-240H is a 240W Mean Well AC-DC LED driver (input: 90~305VAC, output: 42V, operating temperature: -40~+90°C).

Key Features

✓ Input voltage: 90~305VAC
✓ Output voltage: 42V
✓ Rated output current: 5.72A
✓ Ingress protection: IP65
✓ Operating temperature: -40~+90°C
✓ Safety certifications: CB, CCC, CE, EAC, PSE, RCM, TÜV, UL
✓ 7 year warranty

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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Model	Power	Voltage	Current	IP Rating
Mean Well S-HLG-240H-24 Power Supply 240W 24V with AU/NZ plug 10A	240W	24V	10A	IP67	View
Mean Well HLG-240H-48A Power Supply 240W 48V - Adjustable 5A	240W	48V	5A	IP65	View
Mean Well HLG-240H-48 Power Supply 240W 48V 5A	240W	48V	5A	IP67	View
Mean Well HLG-240H-24A Power Supply 240W 24V - Adjustable 10A	240W	24V	10A	IP65	View
Mean Well S-HLG-240H-12 Power Supply 192W 12V with AU/NZ plug 16A	192W	12V	16A	IP67	View
Mean Well HLG-240H-24B Power Supply 240W 24V- Dimmable 10A	240W	24V	10A	IP67	View
Mean Well HLG-240H-12A Power Supply 192W 12V - Adjustable 16A	192W	12V	16A	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: 5.72A

✓ Ingress protection: IP65

✓ Operating temperature: -40~+90°C

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

✓ 7 year warranty

Mean Well HLG-240H-42AB Power Supply 240W 42V - Adjustable and Dimmable 5.72A

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Mean Well HLG-240H-42AB Power Supply 240W 42V - Adjustable and Dimmable 5.72A

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