Can I use the HLG-40H-12AB for dimmable 12V LED under-cabinet lighting in a kitchen?

Yes. The HLG-40H-12AB outputs 12V at up to 3.33A (40W) and supports 1-10V, PWM, and resistance dimming. This makes it ideal for under-cabinet strips where you want smooth brightness control from a wall dimmer or smart home controller.

Is the HLG-40H-12AB a good choice for dimmable 12V cove lighting in a home theater?

Yes. The built-in dimming input allows integration with common 1-10V or PWM dimmers for scene-setting in home theaters, media rooms, or architectural cove details. The adjustable output also lets you fine-tune the voltage to match your specific LED strip.

Can the HLG-40H-12AB power a 12V LED light box with dimming control?

Yes. At 40W and 12V, it can drive a compact 12V lightbox while providing dimming via 1-10V, PWM, or resistance signal. The adjustable potentiometer lets you set the base output to match the exact load of your lightbox modules.

How many meters of 12V LED strip can the HLG-40H-12AB power?

Divide 40W by the strip's rated wattage per meter. For instance, a 12V strip rated at 10W/m could run up to 4 meters (40W / 10W per meter = 4m). Always check your strip's rated power per meter and keep total load at or below 40W.

Can the HLG-40H-12AB be used in a semi-enclosed outdoor soffit?

Yes. Its IP65 water-resistant rating protects against dust ingress and low-pressure water jets, making it suitable for sheltered outdoor locations such as soffits, eaves, or covered walkways. For direct rain exposure, consider the IP67-rated HLG-40H-12B instead.

Mean Well HLG-40H-12AB Power Supply 40W 12V - Adjustable and Dimmable

Name: Mean Well HLG-40H-12AB Power Supply 40W 12V - Adjustable and Dimmable
Brand: Mean Well
SKU: HLG-40H-12AB
Price: 36.31 USD
Availability: InStock

The HLG-40H is a 40W 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
✓ Safety approvals: Note.8 SAFETY & EMC
✓ 3 years warranty

Brand

Mean Well
Series

HLG Series
Power Rating

40 Watt
Output Voltage

12 Volt
Rated Current

3.33 Ampere
Input Voltage

90V~305V
No of Output

1
Dimming Control

10V PWM,1-10V,Built-in Potentiometer,Resistance
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

6.73 in
Width

2.42 in
Height

1.45 in
Weight

1.61 lb

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Model	Power	Voltage	Current	IP Rating	Price
Mean Well HLG-40H-12B Power Supply 40W 12V - Dimmable	40W	12V	3.33A	IP67	$38.39	View
Mean Well HLG-40H-24B Power Supply 40W 24V - Dimmable	40W	24V	1.67A	IP67	$33.90	View
Mean Well HLG-40H-24A Power Supply 40W 24V - Adjustable	40W	24V	1.67A	IP65	$37.32	View
Mean Well HLG-40H-12 Power Supply 40W 12V	40W	12V	3.33A	IP67	$34.41	View
Mean Well HLG-40H-15B Power Supply 40W 15V - Dimmable	40.5W	15V	2.67A	IP67	$35.33	View
Mean Well HLG-40H-15A Power Supply 40W 15V - Adjustable	40W	15V	2.67A	IP65	$37.32	View

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