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

premium quality7 years warrantyaluminium casinghigh efficiency
SKU HLG-120H-54AB
$61.18 USD
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HLG-120H-54AB
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Overview

HLG-120H-54AB is the 54V output model of this series: rated current 2.3A, rated power 124.2W, typical efficiency 93.5%. Type AB: Io and Vo adjustable through built-in potentiometer & 3 in 1 dimming function (1~10Vdc, 10V PWM signal and resistance) (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; 3 in 1 dimming
  • Typical lifetime > 62000 hours
  • 7 years warranty

Specifications

HLG-120H-54ABSpecifications 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 for A/AB-Type only (via built-in potentiometer)
VOLTAGE ADJ. RANGE
49 ~ 58V
CURRENT ADJ. RANGE
Adjustable for A/AB-Type only (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
Io and Vo adjustable through built-in potentiometer; IP65
B
3 in 1 dimming function (1~10VDC, 10V PWM signal and resistance); IP67
AB (this model)
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-54AB BLOCK DIAGRAM
BLOCK DIAGRAM
HLG-120H-54AB DIMMING OPERATION
DIMMING OPERATION
HLG-120H-54AB Illustration (page 5)
Illustration (page 5)
HLG-120H-54AB STATIC CHARACTERISTICS
STATIC CHARACTERISTICS
HLG-120H-54AB TOTAL HARMONIC DISTORTION
TOTAL HARMONIC DISTORTION
HLG-120H-54AB ‧tc : Max. Case Temperature
‧tc : Max. Case Temperature
HLG-120H-54AB ※AB-Type
※AB-Type
HLG-120H-54AB Dimensions (mm)
Dimensions (mm)
HLG-120H-54AB 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-54AB with a 1-10V dimmer for 54V LED fixture brightness control?

Yes. The HLG-120H-54AB accepts 1-10V and PWM dimming signals, allowing smooth brightness adjustment of 54V LED fixtures via a wall dimmer or automation controller. The built-in potentiometer also lets you set the maximum output level.

Is the HLG-120H-54AB a good fit for daylight-harvesting LED systems in commercial spaces?

Yes. Its 1-10V/PWM dimming input can be driven by daylight sensors or building automation systems to reduce 54V LED output when natural light is sufficient. At 124.2W with adjustable output, it provides both automated and manual control over lighting levels.

Can the HLG-120H-54AB power dimmable 54V architectural accent lighting?

Yes. With 124.2W at 54V, built-in dimming via 1-10V/PWM, and adjustable output, it is well suited for accent and feature lighting where scene-setting and smooth brightness transitions are important. The adjustable potentiometer helps fine-tune peak output.

Can I pair with the HLG-120H-54AB to a smart-home system for scheduled LED dimming?

Yes, if the smart-home controller or lighting hub outputs a 1-10VDC, 10V PWM, or resistance dimming signal. You can automate brightness schedules for 54V LED fixtures while the built-in potentiometer sets the maximum intensity ceiling.

How many meters of 54V LED strip can the HLG-120H-54AB drive?

The HLG-120H-54AB delivers up to 124.2W. Divide 124.2 by your strip's wattage per meter. A strip rated at 12W/m could run up to about 10 meters (124.2W / 12W per meter = 10.3m). Always check your strip's rated power per meter before finalizing the run length.

Is the HLG-120H-54AB rated for semi-outdoor locations like covered patios?

Yes. Its IP65 rating protects against dust and low-pressure water jets, making it suitable for covered patios, porches, or building overhangs. For fully exposed outdoor installations, the IP67-rated HLG-120H-54B with dimming would be a better fit.

Payment & Security

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Other HLG-120H Models

2 other models
ModelPowerVoltageCurrentIP Rating
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-54AB Power Supply 120W 54V - Adjustable and Dimmable 2.3A
Mean Well

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

$61.18 USD

HLG-120H-54AB is the 54V output model of this series: rated current 2.3A, rated power 124.2W, typical efficiency 93.5%. Type AB: Io and Vo adjustable through built-in potentiometer & 3 in 1 dimming function (1~10Vdc, 10V PWM signal and resistance) (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; 3 in 1 dimming
  • 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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