Mean Well HLG-480H-42AB Power Supply 480W 42V

Name: Mean Well HLG-480H-42AB Power Supply 480W 42V - Adjustable and Dimmable 11.4A
Brand: Mean Well
SKU: HLG-480H-42AB
Price: 151.52 USD
Availability: InStock
Rating: 5.0 (4 reviews)

Overview

HLG-480H-42AB is the 42V output model of this series: rated current 11.4A, rated power 478.8W, typical efficiency 95%. Type AB: Io and Vo adjustable through built-in potentiometer & 3 in 1 dimming function (0~10Vdc，10V PWM signal and resistance) (IP65).

HLG-480H series is a 480W AC/DC LED driver featuring the dual mode constant voltage and constant current output. HLG-480H operates from 90～305VAC and offers models with different rated voltage ranging between 24V and 54V. Thanks to the high efficiency up to 95.5%, 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-480H 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 design for indoor or outdoor installations
Function options: output adjustable via potentiometer; 3 in 1 dimming (dim-to-off, isolated design) ; junction box
Typical lifettime > 62000 hours
7 years warranty (Note.9)

Specifications

HLG-480H-42ABSpecifications from the official datasheet (2026-02-04 edition)

OUTPUT

DC VOLTAGE: 42V
CONSTANT CURRENT REGION^Note.4: 21 ~ 42V
RATED CURRENT: 11.4A
RATED POWER: 478.8W
RIPPLE & NOISE (max.)^Note.2: 250mVp-p
VOLTAGE ADJ. RANGE: Adjustable for A/AB-Type only (via built-in potentiometer) 35.7 ~ 44.1V
CURRENT ADJ. RANGE: Adjustable for A/AB-Type only (via built-in potentiometer) 5.7 ~ 11.4A
VOLTAGE TOLERANCE^Note.3: ±1.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±0.5%
SETUP, RISE TIME^Note.6: 500ms, 80ms 115VAC/230VAC
HOLD UP TIME (Typ.): 16ms 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≧0.97/230VAC, PF≧0.95/277VAC @ full load (Please refer to "POWER FACTOR (PF) CHARACTERISTIC" section)
TOTAL HARMONIC DISTORTION: THD< 20% (@ load≧40% / 115VAC,230VAC,277VAC) (Please refer to "TOTAL HARMONIC DISTORTION (THD)" section)
EFFICIENCY (Typ.) 230VAC: 95%
EFFICIENCY (Typ.) 277VAC: 95.5%
AC CURRENT (Typ.): 5A / 115VAC 2.45A / 230VAC 2A / 277VAC
INRUSH CURRENT(Typ.): COLD START 35A(twidth=1800μs measured at 50% Ipeak) at 230VAC; Per NEMA 410
LEAKAGE CURRENT: <0.75mA / 277VAC
MAX. NO. of PSUs on 16A CIRCUIT BREAKER: 2unit(circuit breaker of type B) / 3units(circuit breaker of type C) at 230VAC

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: 46 ~ 55V Shut down output voltage, re-power on to recovery
OVER TEMPERATURE: Shut down output voltage, re-power on to recovery

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 non-condensing
TEMP. COEFFICIENT: ±0.02%/℃ (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. 250.13-12; ENEC BS EN/EN61347-1, BS EN/EN61347-2-13 independent, BS EN/EN62384; GB/T19510.1,GB/T19510.213;IP65 or IP67, EAC TP TC 004,AS/NZS IEC 61347.2.13:2013,AS/NZS 61347.1:2016;KC61347-1, KC61347-2-13(except for AB,Dx type), J61347-1(H29), J61347-2-13(H29)(except for Dx 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/EN61000-3-2 Class C (@ load≧50%) ; BS EN/EN61000-3-3;GB/T 17743, GB17625.1, EAC TP TC 020;KC KN15,KN61547(except for AB,Dx type),J55015(H29)(for Blank/A-type)
EMC IMMUNITY: Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN61547, light industry level (surge immunity Line-Earth 4KV, Line-Line 2KV), EAC TP TC 020 ;KC KN15,KN61547( except for AB,Dx type ),J55015(H29)(for Blank/A-type)

OTHERS

MTBF: 1185.9K hrs min. Telcordia SR-332(Bellcore) ; 95.4K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 262*125*43.8mm (L*W*H)
PACKING: 2.8Kg;4pcs/12.2Kg/0.55CUFT

MODEL ENCODING

Blank: Io and Vo fixed; IP67
A: Io and Vo adjustable through built-in potentiometer; IP65
B: 3 in 1 dimming function (0~10VDC，10V PWM signal and resistance); IP67
AB (this model): Io and Vo adjustable through built-in potentiometer & 3 in 1 dimming function (0~10Vdc，10V PWM signal and resistance); IP65
DX: Built-in Smart timer dimming function by user request; IP67

Test conditions and notes13

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. 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.
10. Please refer to the warranty statement on MEAN WELL's website at http://www.meanwell.com
11. 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).
12. 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
13. For A/AB type need to consider build in using to comply with Type HL application.

Technical drawings

HLG-480H-42AB BLOCK DIAGRAM — BLOCK DIAGRAM

HLG-480H-42AB DIMMING OPERATION — DIMMING OPERATION

HLG-480H-42AB Outputcurrent(%) — Outputcurrent(%)

HLG-480H-42AB ◎ Applying additive resistance — ◎ Applying additive resistance

HLG-480H-42AB OUTPUT LOAD vs TEMPERATURE(Note.10) — OUTPUT LOAD vs TEMPERATURE(Note.10)

HLG-480H-42AB STATIC CHARACTERISTICS — STATIC CHARACTERISTICS

HLG-480H-42AB TOTAL HARMONIC DISTORTION — TOTAL HARMONIC DISTORTION

HLG-480H-42AB LIFETIME(Kh) — LIFETIME(Kh)

HLG-480H-42AB MECHANICAL SPECIFICATION — MECHANICAL SPECIFICATION

Typical applications

LED Harboure
LED greenhouse lighting
LED statium lighting
LED mining lighting
Type "HL" for use in ClassⅠ,Division 2 hazardous(Classified) location

Downloads

Datasheet1

HLG-480H-42AB datasheetHLG-480H-SPEC.PDF · 2026-02-04 edition PDF Download

Certificates10

Mean Well HLG-480H PSE Certificate PDF Download

Mean Well HLG-480H KC Certificate PDF Download

Mean Well HLG-480H GlobalMark Certificate PDF Download

Mean Well HLG-480H ENEC Certificate PDF Download

Mean Well HLG-480H CCC Certificate PDF Download

Mean Well HLG-480H CB Certificate PDF Download

Mean Well HLG-480H EMC Certificate PDF Download

Mean Well HLG-480H CE Certificate PDF Download

Mean Well HLG-480H UK Certificate PDF Download

Mean Well IDLC Series UL Certificate PDF Download

Test reports1

Mean Well HLG-480H-42 Test Report PDF Download

Catalogues1

Mean Well LED Driver Catalog PDF Download

FAQ

Can I use the HLG-480H-42AB for a dimmable 42V LED architectural lighting system?

Yes. The AB suffix means it has both a potentiometer for output adjustment and a dimming signal input (0-10VDC, 10V PWM, or resistance). This makes it ideal for architectural lighting where you need to fine-tune the drive level and control brightness through an external dimmer or building automation system. It delivers 478.8W at 42V with a CC range of 21-42V.

Is the HLG-480H-42AB suitable for powering 42V LED strips in a smart-home setup?

Yes. The 0-10V, 10V PWM or resistance dimming input allows integration with smart-home controllers and automation systems that output these dimming signals. At 478.8W, it can handle long runs of 42V LED strip. Use the potentiometer to set a baseline drive level and the dimming input for dynamic scene control.

Can the HLG-480H-42AB drive 42V LED panels in a commercial office with dimming?

Yes. With 478.8W at 42V and 11.4A, it can power multiple 42V LED panel lights. The dimming input lets you integrate with BMS (building management system) or control outputs providing 0-10V, 10V PWM or resistance signals for energy-saving daylight harvesting or occupancy-based dimming in office environments.

How many meters of 42V LED strip can the HLG-480H-42AB power?

Divide the 478.8W rated power by your strip's power rating per meter. A 42V strip at 16W/m would allow about 29.9 meters (478.8W / 16W per meter = 29.9m). Always check your strip's rated power per meter and keep total load at or below 478.8W.

Can I install the HLG-480H-42AB in a covered outdoor canopy or awning?

Yes. It is rated IP65, which protects against dust ingress and low-pressure water jets. Covered outdoor canopies, awnings, and ventilated electrical enclosures are appropriate locations. For direct rain exposure or risk of standing water, choose the IP67-rated HLG-480H-42B instead.

What is the difference between the HLG-480H-42, 42A, 42AB, and 42B?

All four share 478.8W / 42V / 11.4A core specs. The base HLG-480H-42 has fixed output and IP67. The -42A adds output adjustment via potentiometer (IP65). The -42AB adds both adjustment and dimming input (IP65). The -42B has dimming input only and retains IP67 waterproofing.

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Model	Power	Voltage	Current	IP Rating	Price
Mean Well HLG-480H-24 Power Supply 480W 24V 20A	480W	24V	20A	IP67	$130.52	View
Mean Well HLG-480H-24A Power Supply 480W 24V - Adjustable 20A	480W	24V	20A	IP65	$138.61	View
Mean Well HLG-480H-24B Power Supply 480W 24V- Dimmable 20A	480W	24V	20A	IP67	$142.65	View
Mean Well HLG-480H-48B Power Supply 480W 48V- Dimmable 10A	480W	48V	10A	IP67	$140.43	View
Mean Well HLG-480H-54AB Power Supply 480W 54V - Adjustable and Dimmable 8.9A	480.6W	54V	8.9A	IP65	$151.52	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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Mean Well HLG-480H-42AB Power Supply 480W 42V - Adjustable and Dimmable 11.4A

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