Mean Well HLG-40H-54 Power Supply | 40W 54V LED Driver

Description

Features

Universal AC input (up to 305VAC) / Full range

High efficiency up to 90.5%

Built-in active PFC function, PF> 0.9 for 60% of load or higher

Protections: Short circuit / Over current / Over voltage / Over temperature

IP67 / IP65 design for indoor or outdoor installations

Class 2 power unit

Output current adjustable through output cable or internal potentiometer

Cooling by free air convection

Suitable for dry, damp and wet location

Suitable for LED lighting and street lighting applications

Meet 4kV surge immunity level (IEC61000-4-5)

Multiple models for choice: A-Type: IP65 rated. Output voltage and constant current level can be adjusted through internal potentiometer B-Type: IP67 rated and built-in 3 in 1 dimming function (1~10VDC, PWM signal, or resistance) Blank-Type: IP67 rated. Cable for I/O connection D-Type(option): IP67 rated. Timer dimming function, contact MEAN WELL for details.

7 years warranty

General Specification

AC input voltage range	90~305VAC ; 127~431VDC
AC inrush current (max.)	Cold start, 50A at 230VAC
DC adjustment range	±10% rated output voltage (A-Type only)
Current adjustment range	60%~100% rated output current adjustable by internal potentiometer (A-Type only)
Over current protection	95%~108% constant current limiting, auto-recovery
Over voltage protection	109%~145% rated output voltage, shut off, re-power on to recover
Setup, rise, hold up time	1000ms, 80ms, 16ms at full load and 230VAC
Withstand voltage	I/P-O/P: 3.75kVAC, I/P-FG: 2kVAC, O/P-FG:0.5kVAC
Working temperature	-40~+70ºC (refer to output derating curve)
Safety standards	UL8750, TUV EN61347-1, EN61347-2-13, PSE J61347-1, J61347-2-13 approved; Design refer to UL60950-1, EN60950-1, EN60335-1
EMC standards	EN55015, EN61000-3-2 class C, EN61000-3-3, EN61000-4-2,3,4,5,6,8,11, EN61547
Connection Input	UL rated, SJTW 18AWGx3C (30cm)
Connection Output	A/D/Blank-Type: SVT 18AWGx2C (30cm); B-Type: SVT 18AWGx2C (30cm)+UL2517 18AWGx2C (30cm)
Dimension (LxWxH) (mm)	171x 61.5x 36.8

Specifications

Brand

Mean Well
Series

HLG Series
Power Rating

40 Watt
Output Voltage

54 Volt
Rated Current

0.75 Ampere
Input Voltage

90V~305V
No of Output

1
Dimming Control

None
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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Frequently Asked Questions

Can I use the HLG-40H-54 to power 54V LED modules for outdoor signage?

Yes. The HLG-40H-54 delivers 54V at up to 0.75A (40W) with an IP67 waterproof rating, making it suitable for small outdoor sign applications using 54V LED modules. Its wide 90-305VAC input accommodates different mains supplies found in commercial installations.

Is the HLG-40H-54 suitable for driving a short run of 54V constant-current LED fixtures?

Yes. It operates in constant-current mode with a CC voltage range of 32-54V, so it can accommodate LED fixtures whose forward voltage falls within that range. The 40W maximum output limits it to smaller installations or single-fixture applications.

Can I use the HLG-40H-54 in a greenhouse or horticulture lighting setup?

Yes, provided your 54V LED grow lights draw 40W or less. The IP67 rating protects against the high humidity and water exposure common in greenhouses. However, note that the base model has no output adjustment or dimming, so you would need an external controller for brightness changes.

How many meters of 54V LED strip can the HLG-40H-54 support?

Divide 40W by your strip's rated power per meter. For example, a 54V strip consuming 5W/m could run up to 8 meters (40W / 5W per meter = 8m). Check your strip's rated power per meter and keep total draw at or below 40W.

Can the HLG-40H-54 handle freezing outdoor temperatures?

Yes. It is rated for an operating temperature range of -40°C to +80°C, so it can function reliably in sub-zero winter conditions. Combined with its IP67 waterproof rating and aluminium casing, it is built for exposed outdoor environments.

What are the differences between the HLG-40H-54, 54A, 54AB, and 54B variants?

All four share 40W / 54V / 0.75A core specs. The base HLG-40H-54 has no output adjustment or dimming and is IP67 waterproof. The -54A adds a built-in potentiometer for output adjustment (IP65). The -54AB adds both potentiometer adjustment and 1-10V/PWM dimming (IP65). The -54B adds dimming input only and retains IP67.

Model	Power	Voltage	Current	IP Rating	Price
Mean Well HLG-40H-12B Power Supply 40W 12V - Dimmable	40W	12V	3.33A	IP67	$36.29	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	$35.28	View
Mean Well HLG-40H-12 Power Supply 40W 12V	40W	12V	3.33A	IP67	$34.18	View
Mean Well HLG-40H-15B Power Supply 40W 15V - Dimmable	40.5W	15V	2.67A	IP67	$35.33	View

Mean Well HLG-40H-54 Power Supply 40W 54V