Mean Well HLG-320H-20AB Power Supply

Name: Mean Well HLG-320H-20AB Power Supply 300W 20V - Adjustable and Dimmable 15A
Brand: Mean Well
SKU: HLG-320H-20AB
Price: 101.51 USD
Availability: InStock
Rating: 5.0 (4 reviews)

Overview

HLG-320H-20AB is the 20V output model of this series: rated current 15A, rated power 300W, typical efficiency 93.5%. Type AB: Io adjustable through built-in potentiometer & 3 in 1 dimming function (1~10Vdc, 10V PWM signal and resistance) (IP65).

HLG-320H series is a 320W AC/DC LED driver featuring the dual mode constant voltage and constant current output. HLG-320H 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-320H 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 rating for indoor or outdoor installations
Function options: output adjustable via potentiometer; 3 in 1 dimming
Typical lifettime > 62000 hours
7 years warranty

Specifications

HLG-320H-20ABSpecifications from the official datasheet (2026-02-04 edition)Download datasheet PDF

OUTPUT

DC VOLTAGE: 20V
CONSTANT CURRENT REGION^Note.4: 10 ~ 20V
RATED CURRENT: 15A
RATED POWER: 300W
RIPPLE & NOISE (max.)^Note.2: 150mVp-p
CURRENT ADJ. RANGE: 7.5 ~ 15A
VOLTAGE TOLERANCE^Note.3: ±1.5%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±1.0%
SETUP, RISE TIME^Note.6: 2500ms,80ms/115VAC 600ms,80ms/230VAC
HOLD UP TIME (Typ.): 15ms / 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≧0.94/277VAC @ 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.) (230Vac): 93.5%
EFFICIENCY (Typ.) (277Vac): 94%
AC CURRENT (Typ.): 3.5A / 115VAC 1.65A / 230VAC 1.45A / 277VAC
INRUSH CURRENT(Typ.): COLD START 70A(twidth=1010μs measured at 50% Ipeak) at 230VAC; Per NEMA 410
MAX. No. of PSUs on 16A CIRCUIT BREAKER: 1 unit (circuit breaker of type B) / 2 units (circuit breaker of type C) at 230VAC
LEAKAGE CURRENT: <0.75mA / 277VAC

PROTECTION

OVER CURRENT^Note.4: 95 ~ 108% Constant current limiting, recovers automatically after fault condition is removed
SHORT CIRCUIT: Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 22.5 ~ 27V
OVER TEMPERATURE: Shut down and latch off o/p voltage, re-power on to recover

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 ~ 50℃)
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/AS/NZS 61347-1, BS EN/EN/AS/NZS 61347-2-13 independent; GB/T19510.1,GB/T19510.213; IP65 or IP67 (except for HLG-320H C-type); J61347-1, J61347-2-13 (except for C-type), EAC TP TC 004;KC61347-1,KC61347-2-13(except for AB,C-type), BIS IS 15885(Part2/Sec13) (NOTE 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: 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,EAC TP TC 020
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

OTHERS

MTBF: 1702.2K hrs min. Telcordia SR-332 (Bellcore) ; 157.2K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 252*90*43.8mm (L*W*H)
PACKING: 1.88Kg; 8pcs/16Kg/0.92CUFT

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 adjustable through built-in potentiometer & 3 in 1 dimming function (1~10Vdc, 10V PWM signal and resistance); IP65
C: Terminal block for I/O connection. Output voltage and constant current level can be adjusted through internal potentiometer.
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. 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. BIS certification is for HLG-320H-A only, but products sourced from Taiwan do not have the BIS logo, please contact your MEAN WELL sales for more information.
14. For A/AB type need to consider build in using to comply with Type HL application.

Technical drawings

HLG-320H-20AB BLOCK DIAGRAM — BLOCK DIAGRAM

HLG-320H-20AB DIMMING OPERATION — DIMMING OPERATION

HLG-320H-20AB Illustration (page 5) — Illustration (page 5)

HLG-320H-20AB OUTPUT LOAD vs TEMPERATURE(Note.10) — OUTPUT LOAD vs TEMPERATURE(Note.10)

HLG-320H-20AB STATIC CHARACTERISTICS — STATIC CHARACTERISTICS

HLG-320H-20AB TOTAL HARMONIC DISTORTION — TOTAL HARMONIC DISTORTION

HLG-320H-20AB 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-320H-20AB datasheetHLG-320H-SPEC.PDF · 2026-02-04 edition PDF Download

Certificates5

CB Certificate (HLG-320H)(EN) PDF Download

TUV Certificate (HLG-320H)(EN) PDF Download

EMC Certificate(HLG-320H)(EN) PDF Download

UL Certificate(HLG-320H)(EN) PDF Download

PSE Certificate(HLG-320H)(EN) PDF Download

Test reports1

Test Report (HLG-320H-20)(EN) PDF Download

Catalogues1

Mean Well LED Driver Catalog PDF Download

FAQ

Can I use the HLG-320H-20AB with a 1-10V dimmer to control high-power 20V LED strip installations?

Yes. The HLG-320H-20AB accepts 1-10V and PWM dimming signals and delivers up to 300W at 20V, so you can pair with a wall dimmer or automation controller to smoothly adjust brightness on large 20V LED strip runs. The built-in potentiometer also lets you set the output current (7.5-15A).

Is the HLG-320H-20AB suitable for powering 20V LED channel-letter signage with dimming control?

Yes. At 300W and 20V output with 1-10V/PWM dimming input, it can drive large 20V channel-letter or cabinet sign arrays while allowing brightness scheduling. Its wide 90-305VAC input handles most commercial mains voltages worldwide.

Can the HLG-320H-20AB power a smart-home controlled 20V LED lighting system?

Yes. The dimming input accepts 1-10VDC, a 10V PWM signal or resistance, so it can be driven by smart-home or building automation controllers that provide one of these signals. With 300W at 20V and a current-adjust potentiometer, you get both automated dimming and manual setting of the drive level.

How many meters of 20V LED strip can the HLG-320H-20AB power?

Divide 300W by your strip's rated power per meter. For example, a strip drawing 14W/m allows up to about 21.4 meters (300W / 14W per meter). Always check your strip's rated power per meter and keep the total load at or below 300W.

Can the HLG-320H-20AB be installed in a sheltered outdoor location like a soffit or canopy?

Yes. The HLG-320H series is rated IP65 or IP67 depending on type, and its metal housing is designed for indoor and outdoor applications, making it suitable for covered outdoor areas such as soffits, canopies, and awnings. Check the AB-type's rating before a fully rain-exposed installation.

What is the operating temperature range of the HLG-320H-20AB for outdoor use?

The HLG-320H-20AB is rated for a case temperature (Tcase) of -40°C to +90°C, covering extreme cold and hot climates. Output derating applies at higher temperatures and under low input voltage, so check the output load vs temperature curve when sizing for hot locations.

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Customer reviews

5.0 Reviews verified for authenticity

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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-320H-20AB Power Supply 300W 20V - Adjustable and Dimmable 15A

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