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Mean Well

Mean Well HLG-120H-54A Power Supply 120W 54V - Adjustable 2.3A

premium quality7 years warrantyaluminium casinghigh efficiency
SKU HLG-120H-54A
$60.32 USD
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Select model — 24 in this family

HLG-120H-54A
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Overview

HLG-120H-54A is the 54V output model of this series: rated current 2.3A, rated power 124.2W, typical efficiency 93.5%. Type A: Io and Vo adjustable through built-in potentiometer (IP65).

HLG-120H series is a 120W AC/DC LED driver featuring the dual mode constant voltage and constant current output. HLG-120H operates from 90～305VAC and offers models with different rated voltage ranging between 12V and 54V. Thanks to the high efficiency up to 93.5%, with the fanless design, the entire series is able to operate for -40℃ ~ +80℃ case temperature under free air convection. The design of metal housing and IP65 ingress protection level allows this series to fit both indoor and outdoor applications. HLG-120H is equipped with various function options, such as dimming methodologies, so as to provide the optimal design flexibility for LED lighting system.

Features

  • Constant Voltage + Constant Current mode output
  • Metal housing with class I design
  • Built-in active PFC function
  • IP65 rating for indoor or outdoor installations
  • Function options: output adjustable via potentiometer
  • Typical lifetime > 62000 hours
  • 7 years warranty

Specifications

HLG-120H-54ASpecifications from the official datasheet (2026-07-24 edition)Download datasheet PDF

OUTPUT

DC VOLTAGE
54V
CONSTANT CURRENT REGIONNote.4
27 ~ 54V
RATED CURRENT
2.3A
RATED POWER
124.2W
RIPPLE & NOISE (max.)Note.2
200mVp-p
VOLTAGE ADJ. RANGE
Adjustable (via built-in potentiometer)
VOLTAGE ADJ. RANGE
49 ~ 58V
CURRENT ADJ. RANGE
Adjustable (via built-in potentiometer)
CURRENT ADJ. RANGE
1.1 ~ 2.3A
VOLTAGE TOLERANCENote.3
±1.0%
LINE REGULATION
±0.5%
LOAD REGULATION
±0.5%
SETUP, RISE TIMENote.6
1200ms,50ms/115VAC 500ms,50ms/230VAC
HOLD UP TIME (Typ.)
12ms / 115VAC, 230VAC

INPUT

VOLTAGE RANGENote.5
90 ~ 305VAC 127 ~ 431VDC (Please refer to "STATIC CHARACTERISTIC" section)
FREQUENCY RANGE
47 ~ 63Hz
POWER FACTOR (Typ.)
PF≧0.98/115VAC, PF≧0.95/230VAC, PF≧0.93/277VAC @ full load (Please refer to "POWER FACTOR (PF) CHARACTERISTIC" section)
TOTAL HARMONIC DISTORTION
THD< 20% (@ load≧50% / 115VAC,230VAC; @ load≧75% / 277VAC) (Please refer to " TOTAL HARMONIC DISTORTION (THD) " section)
EFFICIENCY (Typ.)
93.5%
AC CURRENT (Typ.)
1.4A / 115VAC 0.6A / 230VAC 0.55A / 277VAC
INRUSH CURRENT (Typ.)
COLD START 60A(twidth=375μs measured at 50% Ipeak) at 230VAC; Per NEMA 410
MAX. No. of PSUs on 16A CIRCUIT BREAKER
5 units (circuit breaker of type B) / 9 units (circuit breaker of type C) at 230VAC
LEAKAGE CURRENT
<0.75mA / 277VAC

PROTECTION

OVER CURRENT
95 ~ 108% Constant current limiting, recovers automatically after fault condition is removed
SHORT CIRCUIT
Constant current limiting, recovers automatically after fault condition is removed
OVER VOLTAGE
59 ~ 65V Shut down o/p voltage with auto-recovery or re-power on to recovery
OVER TEMPERATURENote.9
Shut down o/p voltage, recovers automatically after temperature goes down

ENVIRONMENT

WORKING TEMP.
Tcase= -40 ~ +80℃ (Please refer to "OUTPUT LOAD vs TEMPERATURE" section)
MAX. CASE TEMP.
Tcase= +80℃
WORKING HUMIDITY
20 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY
-40 ~ +80℃, 10 ~ 95% RH
TEMP. COEFFICIENT
±0.03%/℃ (0 ~ 60℃)
VIBRATION
10 ~ 500Hz, 5G 12min./1cycle, period for 72min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDSNote.8
UL8750 (type”HL”) , CSA C22.2 No. 250.0-08, BS EN/EN 61347-1, BS EN/EN 61347-2-13, AS/NZS 61347-1, AS/NZS 61347-2-13 independent; GB/T19510.1,GB/T19510.213, IP65, J61347-1, J61347-2-13 ,BIS IS15885( for 12B,24B,36A,54A only), EAC TP TC 004 , KC61347-1,KC61347-2-13 approved
WITHSTAND VOLTAGE
I/P-O/P:3.75KVAC I/P-FG:2KVAC O/P-FG:1.5KVAC
ISOLATION RESISTANCE
I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSIONNote.8
Compliance to BS EN/EN55015, BS EN/EN55032 Class B, BS EN/EN61000-3-2 Class C (@ load≧50%) ; BS EN/EN61000-3-3, GB/T 17743 , GB17625.1, EAC TP TC 020, KSC 9815(except for D-type)
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN61547, BS EN/EN55024, light industry level (surge immunity Line-Earth 4KV, Line-Line 2KV),EAC TP TC 020, KSC 9547(except for D-type)

OTHERS

MTBF
2185.8K hrs min. Telcordia SR-332 (Bellcore); 167.1Khrs min. MIL-HDBK-217F (25℃)
DIMENSION
220*68*38.8mm (L*W*H)
PACKING
1.12Kg; 12pcs/14.4Kg/0.8CUFT

MODEL ENCODING

Blank
Io and Vo fixed; IP67
A (this model)
Io and Vo adjustable through built-in potentiometer; IP65
B
3 in 1 dimming function (1~10VDC, 10V PWM signal and resistance); IP67
AB
Io and Vo adjustable through built-in potentiometer & 3 in 1 dimming function (1~10Vdc, 10V PWM signal and resistance); IP65
D
Timer dimming function, contact MEAN WELL for details(safety pending); IP67
Test conditions and notes15
  1. 1. All parameters NOT specially mentioned are measured at 230VAC input, rated current and 25℃ of ambient temperature.
  2. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor.
  3. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. Please refer to "DRIVING METHODS OF LED MODULE".
  5. 5. De-rating may be needed under low input voltages. Please refer to “STATIC CHARACTERISTIC” sections for details.
  6. 6. Length of set up time is measured at first cold start. Turning ON/OFF the driver may lead to increase of the set up time.
  7. 7. The driver is considered as a component that will be operated in combination with final equipment. Since EMC performance will be affected by the complete installation, the final equipment manufacturers must re-qualify EMC Directive on the complete installation again. (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf)
  8. 8. To fulfill requirements of the latest ErP regulation for lighting fixtures, this LED driver can only be used behind a switch without permanently connected to the mains.
  9. 9. For OTP which triggered at light load/no load condition, proceed AC repower on to recovery.
  10. 10. This series meets the typical life expectancy of >62,000 hours of operation when Tcase, particularly tc point (or TMP, per DLC), is about 75℃ or less.
  11. 11. Please refer to the warranty statement on MEAN WELL's website at http://www.meanwell.com
  12. 12. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).
  13. 13. For any application note and IP water proof function installation caution, please refer our user manual before using. https://www.meanwell.com/Upload/PDF/LED_EN.pdf
  14. 14. For A/AB type need to consider build in using to comply with Type HL application.
  15. 15. Products sourced from the Americas regions may only have the UL, CE and UKCA logos. Please contact your MEAN WELL sales for more information.

Technical drawings

HLG-120H-54A BLOCK DIAGRAM
BLOCK DIAGRAM
HLG-120H-54A Illustration (page 5)
Illustration (page 5)
HLG-120H-54A STATIC CHARACTERISTICS
STATIC CHARACTERISTICS
HLG-120H-54A TOTAL HARMONIC DISTORTION
TOTAL HARMONIC DISTORTION
HLG-120H-54A MECHANICAL SPECIFICATION ※A-Type
MECHANICAL SPECIFICATION ※A-Type
HLG-120H-54A ‧tc : Max. Case Temperature
‧tc : Max. Case Temperature
HLG-120H-54A Dimensions (mm)
Dimensions (mm)
HLG-120H-54A WATERPROOF CONNECTION
WATERPROOF CONNECTION

Typical applications

  • LED street lighting
  • LED high-bay lighting
  • Parking space lighting
  • LED fishing lamp
  • LED greenhouse lighting
  • Type “HL” for use in ClassⅠ, Division 2 hazardous (Classified) location.

Downloads

FAQ

Can I use the HLG-120H-54A to trim the output for 54V LED panels that need a precise drive voltage?

Yes. The built-in potentiometers let you adjust the output voltage within 49-58V and the output current within 1.1-2.3A, which is useful when your 54V LED panel or COB module performs best at a slightly different drive point. In constant-current mode the driver covers a 27-54V region.

Is the HLG-120H-54A suitable for indoor commercial LED lighting installations?

Yes. At 124.2W and 54V with IP65 water-resistant protection, it works well in indoor commercial settings like offices, retail spaces, or warehouses. The adjustable output helps you optimize brightness for different ceiling heights or fixture types.

Can the HLG-120H-54A power 54V LED modules for illuminated signage in a sheltered location?

Yes. The 124.2W at 54V output can drive LED sign modules, and the adjustable output lets you match the voltage precisely to the module string. IP65 protection is sufficient for sheltered or semi-outdoor locations such as building overhangs or covered entrances.

How many meters of 54V LED strip can the HLG-120H-54A support?

Divide the 124.2W rated power by your strip's wattage per meter. For example, a 54V strip rated at 15W/m would allow about 8 meters (124.2W / 15W per meter = 8.3m). Always check your strip's rated power per meter and keep total load at or below 124.2W.

Is the HLG-120H-54A suitable for damp or dusty environments like a workshop?

Yes. Its IP65 rating provides full dust protection and resistance to low-pressure water jets. This makes it appropriate for workshops, garages, laundry rooms, or food processing areas. For locations with direct heavy rainfall, the IP67-rated HLG-120H-54 would be a better choice.

Payment & Security

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Other HLG-120H Models

3 other models
ModelPowerVoltageCurrentIP Rating
Mean Well HLG-120H-C350A Power Supply 150.5W 350mA - Adjustable 150.5W 430V 0.35A IP65 View
Mean Well HLG-120H-C350B Power Supply 150.5W 350mA - Dimmable 150.5W 430V 0.35A IP65 View
Mean Well HLG-120H-C350AB Power Supply 150.5W 350mA - Adjustable and Dimmable 150.5W 430V 0.35A IP65 View
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Mean Well HLG-120H-54A Power Supply 120W 54V - Adjustable 2.3A
Mean Well

Mean Well HLG-120H-54A Power Supply 120W 54V - Adjustable 2.3A

$60.32 USD

HLG-120H-54A is the 54V output model of this series: rated current 2.3A, rated power 124.2W, typical efficiency 93.5%. Type A: Io and Vo adjustable through built-in potentiometer (IP65).

HLG-120H series is a 120W AC/DC LED driver featuring the dual mode constant voltage and constant current output. HLG-120H operates from 90～305VAC and offers models with different rated voltage ranging between 12V and 54V. Thanks to the high efficiency up to 93.5%, with the fanless design, the entire series is able to operate for -40℃ ~ +80℃ case temperature under free air convection. The design of metal housing and IP65 ingress protection level allows this series to fit both indoor and outdoor applications. HLG-120H is equipped with various function options, such as dimming methodologies, so as to provide the optimal design flexibility for LED lighting system.

Features

  • Constant Voltage + Constant Current mode output
  • Metal housing with class I design
  • Built-in active PFC function
  • IP65 rating for indoor or outdoor installations
  • Function options: output adjustable via potentiometer
  • Typical lifetime > 62000 hours
  • 7 years warranty

Typical applications

  • LED street lighting
  • LED high-bay lighting
  • Parking space lighting
  • LED fishing lamp
  • LED greenhouse lighting
  • Type “HL” for use in ClassⅠ, Division 2 hazardous (Classified) location.

Model

  • 40W 54V
  • 40W 54V Adjustable
  • 40W 54V Adjustable and Dimmable
  • 40W 54V Dimmable
  • 60W 54V
  • 60W 54V Adjustable
  • 60W 54V Adjustable and Dimmable
  • 60W 54V Dimmable
  • 80W 54V
  • 80W 54V Adjustable
  • 80W 54V Adjustable and Dimmable
  • 80W 54V Dimmable
  • 100W 54V
  • 100W 54V Adjustable
  • 100W 54V Adjustable and Dimmable
  • 100W 54V Dimmable
  • 120W 54V
  • 120W 54V Adjustable
  • 120W 54V Adjustable and Dimmable
  • 120W 54V Dimmable
  • 150W 54V
  • 150W 54V Adjustable
  • 150W 54V Adjustable and Dimmable
  • 150W 54V Dimmable
View product

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