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

Name: Mean Well HLG-120H-54 Power Supply 120W 54V 2.3A
Brand: Mean Well
SKU: HLG-120H-54
Price: 54.29 USD
Availability: InStock
Rating: 5.0 (4 reviews)

Overview

HLG-120H-54 is the 54V output model of this series: rated current 2.3A, rated power 124.2W, typical efficiency 93.5%. Type Blank: Io and Vo fixed (IP67).

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 IP67 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
IP67 rating for indoor or outdoor installations
Typical lifetime > 62000 hours
7 years warranty

Specifications

HLG-120H-54Specifications from the official datasheet (2026-07-24 edition)

OUTPUT

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

INPUT

VOLTAGE RANGE^Note.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 TEMPERATURE^Note.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 STANDARDS^Note.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, IP67, 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 EMISSION^Note.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 (this model): 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: 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 notes14

1. All parameters NOT specially mentioned are measured at 230VAC input, rated current and 25℃ of ambient temperature.
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. Tolerance : includes set up tolerance, line regulation and load regulation.
4. Please refer to "DRIVING METHODS OF LED MODULE".
5. De-rating may be needed under low input voltages. Please refer to “STATIC CHARACTERISTIC” sections for details.
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. 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. 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. For OTP which triggered at light load/no load condition, proceed AC repower on to recovery.
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. Please refer to the warranty statement on MEAN WELL's website at http://www.meanwell.com
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. 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
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-54 BLOCK DIAGRAM — BLOCK DIAGRAM

HLG-120H-54 Illustration (page 5) — Illustration (page 5)

HLG-120H-54 STATIC CHARACTERISTICS — STATIC CHARACTERISTICS

HLG-120H-54 TOTAL HARMONIC DISTORTION — TOTAL HARMONIC DISTORTION

HLG-120H-54 MECHANICAL SPECIFICATION ※Blank/D-Type — MECHANICAL SPECIFICATION ※Blank/D-Type

HLG-120H-54 ‧tc : Max. Case Temperature — ‧tc : Max. Case Temperature

HLG-120H-54 Dimensions (mm) — Dimensions (mm)

HLG-120H-54 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

Datasheet1

HLG-120H-54 datasheetHLG-120H-SPEC.PDF · 2026-07-24 edition PDF Download

Certificates5

UL Certificate (HLG-120H)(EN) PDF Download

TUV Certificate (HLG-120H)(EN) PDF Download

EMC Certificate (HLG-120H)(EN) PDF Download

PSE Certificate (HLG-120H)(EN) PDF Download

ENEC Certificate(HLG-120H)(EN) PDF Download

Catalogues1

Mean Well LED Driver Catalog PDF Download

FAQ

Can I use the HLG-120H-54 to power 54V LED fixtures outdoors?

Yes. The HLG-120H-54 outputs 54V at up to 2.3A (124.2W) and is IP67 waterproof, making it suitable for outdoor LED fixtures, street-light retrofits, or facade lighting that operates at 54V. Its metal housing is designed for both indoor and outdoor applications.

Is the HLG-120H-54 a good driver for high-voltage LED panel arrays?

Yes. The 54V output is well matched to LED panels and COB modules that use higher forward voltages. With 124.2W capacity and a CC voltage range of 27-54V, it can drive series-connected LED arrays as long as the total load does not exceed 124.2W.

Can I run 54V LED grow lights from the HLG-120H-54?

Yes, provided the grow light requires 54V input and draws 124.2W or less. The constant-current operation mode and CC range of 27-54V ensure stable output even if the LED forward voltage shifts with temperature changes during long grow cycles.

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

Divide the 124.2W rated power by your strip's power consumption per meter. For example, a 54V strip rated at 10W/m could run up to about 12 meters (124.2W / 10W per meter = 12.4m). Always check your strip's rated power per meter and keep total load at or below 124.2W.

Can the HLG-120H-54 be installed in a fully exposed outdoor location?

Yes. Its IP67 waterproof rating protects against dust and temporary submersion. Combined with a -40°C to +80°C case temperature (Tcase) rating, it can be permanently mounted outdoors on walls, poles, or inside open junction boxes without additional weatherproofing.

What are the differences between the HLG-120H-54, 54A, 54AB, and 54B models?

All four share the same 124.2W / 54V / 2.3A core specs. The base HLG-120H-54 has no output adjustment and is IP67 waterproof. The -54A adds output voltage/current adjustment via built-in potentiometer and is IP65. The -54AB adds both adjustment and 1-10V/PWM dimming input (IP65). The -54B adds dimming input only and retains IP67.

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Model	Power	Voltage	Current	IP Rating	Price
Mean Well HLG-120H-15A Power Supply 120W 15V - Adjustable 8A	120W	15V	8A	IP65	$54.29	View
Mean Well HLG-120H-12B Power Supply 120W 12V - Dimmable 10A	120W	12V	10A	IP67	$55.65	View

Customer reviews

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Reviewed by 4 customers across the HLG series

By Penny C.|2026-10-03✓ Verified Buyer
Model: HLG-480H-24AQuantity: 2
It is a beast!
By T-Rids |2026-09-14✓ Verified Buyer
Model: HLG-480H-24BQuantity: 1
Very good product
By Maxim|2026-08-25✓ Verified Buyer
Model: HLG-320H-24B ×1, HLG-320H-24B ×1Quantity: 1
Excellent product!
By J. Vega|2026-07-20✓ Verified Buyer
Model: HLG-185H-30Quantity: 1
Exactly what I needed to revive my dead Maytronics Dolphin power supply!

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