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Mean Well HLG-185H-48AB Power Supply 185W 48V - Adjustable and Dimmable 3.9A

premium quality7 years warrantyaluminium casinghigh efficiency
SKU HLG-185H-48AB
$66.08 USD
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HLG-185H-48AB
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Overview

HLG-185H-48AB is the 48V output model of this series: rated current 3.9A, rated power 187.2W, typical efficiency 94%.

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 IP67/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
  • IP67 / 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-48ABSpecifications from the official datasheet (2026-07-24 edition)

OUTPUT

DC VOLTAGE
48V
CONSTANT CURRENT REGIONNote.4
24 ~ 48V
RATED CURRENT
3.9A
RATED POWER
187.2W
RIPPLE & NOISE (max.)Note.2
200mVp-p
VOLTAGE ADJ. RANGE
Adjustable for A/AB-Type only (via built-in potentiometer) 43 ~ 53V
CURRENT ADJ. RANGE
Adjustable for A/AB-Type only (via built-in potentiometer) 1.95 ~ 3.9A
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
54 ~ 63V 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
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-48AB BLOCK DIAGRAM
BLOCK DIAGRAM
HLG-185H-48AB DIMMING OPERATION
DIMMING OPERATION
HLG-185H-48AB Illustration (page 5)
Illustration (page 5)
HLG-185H-48AB STATIC CHARACTERISTICS
STATIC CHARACTERISTICS
HLG-185H-48AB TOTAL HARMONIC DISTORTION
TOTAL HARMONIC DISTORTION
HLG-185H-48AB LIFE TIME
LIFE TIME
HLG-185H-48AB MECHANICAL SPECIFICATION
MECHANICAL SPECIFICATION
HLG-185H-48AB ※B-Type
※B-Type
HLG-185H-48AB Dimensions (mm)
Dimensions (mm)
HLG-185H-48AB ※AB-Type
※AB-Type
HLG-185H-48AB Dimensions (mm)
Dimensions (mm)
HLG-185H-48AB 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-48AB with a building automation system to dim 48V LED lighting?

Yes. The HLG-185H-48AB 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 187.2W at 48V and also has a built-in potentiometer for manual output trimming.

Is the HLG-185H-48AB a good choice for dimmable 48V LED signage?

Yes. At 187.2W / 48V, it can power 48V sign modules while the dimming input lets you reduce brightness for night mode or energy savings. The adjustable output also helps match the driver precisely to the LED string voltage, and the wide 90-305VAC input covers most commercial mains.

Can the HLG-185H-48AB drive dimmable 48V architectural cove or accent lighting?

Yes. The combination of 187.2W at 48V output, 1-10V/PWM dimming input, and output adjustment makes it well suited for architectural lighting where brightness scenes need to change throughout the day. The CC range of 24-48V accommodates varying fixture forward voltages.

Can I use the HLG-185H-48AB to power 48V LED strip lighting in a retail environment?

Yes. The 187.2W at 48V output can drive extended runs of 48V LED strip for display cases, shelf lighting, or accent walls. The dimming capability lets you create different lighting scenes, and the adjustable output helps fine-tune brightness without additional hardware.

How many meters of 48V LED strip can the HLG-185H-48AB power?

Divide 187.2W by your strip's rated power per meter. For example, a 48V strip drawing 12W/m could run about 15.6 meters (187.2W / 12W per meter). Check your strip's rated power per meter and keep total load at or below 187.2W.

Is the HLG-185H-48AB suitable for semi-exposed outdoor installations?

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

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Mean Well HLG-185H-48AB Power Supply 185W 48V - Adjustable and Dimmable 3.9A
Mean Well

Mean Well HLG-185H-48AB Power Supply 185W 48V - Adjustable and Dimmable 3.9A

$66.08 USD

HLG-185H-48AB is the 48V output model of this series: rated current 3.9A, rated power 187.2W, typical efficiency 94%.

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 IP67/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
  • IP67 / 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 48V
  • 185W 48V Adjustable
  • 185W 48V Adjustable and Dimmable
  • 185W 48V Dimmable
  • 240W 48V
  • 240W 48V Adjustable
  • 240W 48V Adjustable and Dimmable
  • 240W 48V Dimmable
  • 320W 48V
  • 320W 48V Adjustable
  • 320W 48V Adjustable and Dimmable
  • 320W 48V Dimmable
  • 480W 48V
  • 480W 48V Adjustable
  • 480W 48V Adjustable and Dimmable
  • 480W 48V Dimmable
  • 600W 48V
  • 600W 48V Adjustable
  • 600W 48V Adjustable and Dimmable
  • 600W 48V Dimmable
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