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Mean Well HLG-185H-54AB Power Supply 185W 54V - Adjustable and Dimmable 3.45A

5.0 (4 reviews)
premium quality7 years warrantyaluminium casinghigh efficiency
SKU HLG-185H-54AB
$59.47 USD
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HLG-185H-54AB
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Overview

HLG-185H-54AB is the 54V output model of this series: rated current 3.45A, rated power 186.3W, typical efficiency 94%. Type AB: Io and Vo adjustable through built-in potentiometer & 3 in 1 dimming function (1~10Vdc, 10V PWM signal and resistance) (IP65).

HLG-185H series is a 185W AC/DC LED driver featuring the dual mode constant voltage and constant current output. HLG-185H operates from 90~305VAC and offers models with different rated voltage ranging between 12V and 54V. Thanks to the high efficiency up to 94%, with the fanless design, the entire series is able to operate for -40℃ ~ +90℃ 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-185H 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
  • 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-185H-54ABSpecifications from the official datasheet (2026-07-24 edition)

OUTPUT

DC VOLTAGE
54V
CONSTANT CURRENT REGIONNote.4
27 ~ 54V
RATED CURRENT
3.45A
RATED POWER
186.3W
RIPPLE & NOISE (max.)Note.2
200mVp-p
VOLTAGE ADJ. RANGE
Adjustable for AB-Type only (via built-in potentiometer) 49 ~ 58V
CURRENT ADJ. RANGE
Adjustable for AB-Type only (via built-in potentiometer) 1.72 ~ 3.45A
VOLTAGE TOLERANCENote.3
±1.0%
LINE REGULATION
±0.5%
LOAD REGULATION
±0.5%
SETUP, RISE TIMENote.6
1000ms,200ms/115VAC 500ms,200ms/230VAC
HOLD UP TIME (Typ.)
16ms / 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≧0.92/277VAC @ 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.)
94%
AC CURRENT (Typ.) 12V
1.8A / 115VAC 0.8A / 230VAC 0.7A / 277VAC
AC CURRENT (Typ.) 15V ~ 54V
2.1A / 115VAC 0.9A / 230VAC 0.8A / 277VAC
INRUSH CURRENT (Typ.)
COLD START 65A(twidth=445μs measured at 50% Ipeak) at 230VAC; Per NEMA 410
MAX. No. of PSUs on 16A CIRCUIT BREAKER
4 units (circuit breaker of type B) / 7 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 ~ +90℃ (Please refer to "OUTPUT LOAD vs TEMPERATURE" section)
MAX. CASE TEMP.
Tcase= +90℃
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
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 (except for D-type) ; IP65 or IP67; J61347-1, J61347-2-13(except for D-type) , EAC TP TC 004, KC61347-1,KC61347-2-13 (except for D-type) 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
Compliance to BS EN/EN55015, BS EN/EN55032 (CISPR32) Class B, BS EN/EN61000-3-2 Class C (@ load≧50%) ; BS EN/EN61000-3-3,GB/T 17743 , GB17625.1(except for D-type) ,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
2184.8K hrs min. Telcordia SR-332 (Bellcore) ; 197.3K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
228*68*38.8mm (L*W*H)
PACKING
1.15Kg; 12pcs/14.8Kg/0.8CUFT

Certifications & ratings

Type
HL

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-185H-54AB BLOCK DIAGRAM
BLOCK DIAGRAM
HLG-185H-54AB DIMMING OPERATION
DIMMING OPERATION
HLG-185H-54AB Illustration (page 5)
Illustration (page 5)
HLG-185H-54AB STATIC CHARACTERISTICS
STATIC CHARACTERISTICS
HLG-185H-54AB TOTAL HARMONIC DISTORTION
TOTAL HARMONIC DISTORTION
HLG-185H-54AB LIFE TIME
LIFE TIME
HLG-185H-54AB Dimensions (mm)
Dimensions (mm)
HLG-185H-54AB ※AB-Type
※AB-Type
HLG-185H-54AB Dimensions (mm)
Dimensions (mm)
HLG-185H-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-185H-54AB with a building automation system to dim 54V LED lighting?

Yes. The HLG-185H-54AB accepts 1-10VDC, 10V PWM or resistance dimming signals, so it works with building management and lighting-control systems that output one of these signals. It delivers up to 186.3W at 54V and also includes a built-in potentiometer for manual output trimming.

Is the HLG-185H-54AB a good choice for dimmable 54V architectural lighting?

Yes. The combination of 186.3W at 54V, 1-10V/PWM dimming, and adjustable output makes it well suited for cove lighting, wall washers, or accent fixtures where brightness scenes change throughout the day. The 27-54V CC range accommodates varying fixture forward voltages.

Can the HLG-185H-54AB power dimmable 54V LED strip in a hospitality or retail setting?

Yes. The 186.3W output can drive extended 54V LED strip runs for accent walls, display cases, or ambient lighting. The dimming input enables scene control, and the adjustable output helps fine-tune brightness precisely to the installation needs.

Can I integrate the HLG-185H-54AB with occupancy or daylight sensors for energy savings?

Yes. Its 1-10V/PWM dimming input connects directly to sensor-driven controllers that output a standard dimming signal. This allows automatic brightness reduction when areas are unoccupied or when sufficient daylight is available, reducing energy consumption while still providing 186.3W rated output when needed.

How many meters of 54V LED strip can the HLG-185H-54AB power?

Divide 186.3W by the strip's rated power per meter. A 54V strip rated at 14W/m could run about 13.3 meters (186.3W / 14W per meter). Check your strip's rated power per meter and keep total load at or below 186.3W.

Is the HLG-185H-54AB rated for semi-exposed or covered outdoor use?

Yes. The HLG-185H series has a metal housing with IP65/IP67 ingress protection that the datasheet says suits indoor and outdoor applications, making it appropriate under canopies, soffits, or in ventilated outdoor cabinets. Waterproof connectors are available for the output cable.

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Other HLG-185H Models

2 other models
ModelPower Voltage Current IP RatingPrice
Mean Well HLG-185H-24A Power Supply 185W 24V - Adjustable 7.8A 187.2W 24V 7.8A IP65$44.14 View
Mean Well HLG-185H-24 Power Supply 185W 24V 7.8A 187.2W 24V 7.8A IP67$58.71 View

Customer reviews

5.0 Reviews verified for authenticity
5 ★ (4)
4 ★ (0)
3 ★ (0)
2 ★ (0)
1 ★ (0)

Reviewed by 4 customers across the HLG series

  1. By Penny C.|2026-10-03✓ Verified Buyer
    Model: HLG-480H-24AQuantity: 2
  2. It is a beast!

    By T-Rids |2026-09-14✓ Verified Buyer
    Model: HLG-480H-24BQuantity: 1
  3. Very good product

    By Maxim|2026-08-25✓ Verified Buyer
    Model: HLG-320H-24B ×1, HLG-320H-24B ×1Quantity: 1
  4. 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!

Mean Well

Mean Well HLG-185H-54AB Power Supply 185W 54V - Adjustable and Dimmable 3.45A

$59.47 USD

HLG-185H-54AB is the 54V output model of this series: rated current 3.45A, rated power 186.3W, typical efficiency 94%. Type AB: Io and Vo adjustable through built-in potentiometer & 3 in 1 dimming function (1~10Vdc, 10V PWM signal and resistance) (IP65).

HLG-185H series is a 185W AC/DC LED driver featuring the dual mode constant voltage and constant current output. HLG-185H operates from 90~305VAC and offers models with different rated voltage ranging between 12V and 54V. Thanks to the high efficiency up to 94%, with the fanless design, the entire series is able to operate for -40℃ ~ +90℃ 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-185H 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
  • 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

  • 185W 54V
  • 185W 54V Adjustable
  • 185W 54V Dimmable
  • 185W 54V Adjustable and Dimmable
  • 240W 54V
  • 240W 54V Adjustable
  • 240W 54V Dimmable
  • 240W 54V Adjustable and Dimmable
  • 320W 54V
  • 320W 54V Adjustable
  • 320W 54V Dimmable
  • 320W 54V Adjustable and Dimmable
  • 480W 54V
  • 480W 54V Adjustable
  • 480W 54V Dimmable
  • 480W 54V Adjustable and Dimmable
  • 600W 54V
  • 600W 54V Adjustable
  • 600W 54V Dimmable
  • 600W 54V Adjustable and Dimmable
View product