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Mean Well

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

$65.23 USD
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Overview

HLG-185H-48A 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-48ASpecifications 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-48A BLOCK DIAGRAM
BLOCK DIAGRAM
HLG-185H-48A DIMMING OPERATION
DIMMING OPERATION
HLG-185H-48A Illustration (page 5)
Illustration (page 5)
HLG-185H-48A STATIC CHARACTERISTICS
STATIC CHARACTERISTICS
HLG-185H-48A TOTAL HARMONIC DISTORTION
TOTAL HARMONIC DISTORTION
HLG-185H-48A LIFE TIME
LIFE TIME
HLG-185H-48A MECHANICAL SPECIFICATION
MECHANICAL SPECIFICATION
HLG-185H-48A ※B-Type
※B-Type
HLG-185H-48A Dimensions (mm)
Dimensions (mm)
HLG-185H-48A ※AB-Type
※AB-Type
HLG-185H-48A Dimensions (mm)
Dimensions (mm)
HLG-185H-48A 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-48A to power 48V LED strips in a covered outdoor area?

Yes. The HLG-185H-48A delivers 48V at up to 3.9A (187.2W), and the series' metal housing with IP65/IP67 ingress protection is designed for indoor and outdoor applications, so it suits covered patios, canopies, or soffits.

Is the adjustable output on the HLG-185H-48A useful for fine-tuning LED brightness?

Yes. The built-in potentiometers let you trim the output voltage (43-53V) and current (1.95-3.9A) without an external dimmer, so you can match your specific LED load or reduce brightness slightly for the desired effect.

Can the HLG-185H-48A power 48V LED modules for commercial signage?

Yes. At 187.2W and 48V, it can drive 48V channel letters, light boxes, or cabinet sign modules. The adjustable output is useful for precisely matching driver voltage to the module string voltage, and the wide 90-305VAC input handles most commercial mains supplies.

Can the HLG-185H-48A drive 48V architectural or cove lighting?

Yes. The 187.2W output at 48V suits medium-power architectural fixtures such as linear cove lights, wall washers, and accent strips. The built-in adjustment lets you set the output voltage within 43-53V and the current within 1.95-3.9A to suit the fixtures.

How many meters of 48V LED strip can the HLG-185H-48A handle?

Divide 187.2W by your strip's power consumption per meter. For instance, a 48V strip rated at 10W/m would allow about 18.7 meters (187.2W / 10W per meter). Always check your strip's rated power per meter and keep the total load at or below 187.2W.

Is the HLG-185H-48A suitable for a damp warehouse or parking garage?

Yes. The series' metal housing with IP65/IP67 ingress protection is designed for indoor and outdoor use, which suits damp indoor environments like warehouses or parking garages. Working humidity is rated 20-95% RH non-condensing.

Payment & Security

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

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

$65.23 USD

HLG-185H-48A 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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