Mean Well HLG-320H-20 Power Supply 300W 20V 15A

Name: Mean Well HLG-320H-20 Power Supply 300W 20V 15A
Brand: Mean Well
SKU: HLG-320H-20
Price: 95.9 USD
Availability: InStock
Rating: 5.0 (4 reviews)

Overview

HLG-320H-20 is the 20V output model of this series: rated current 15A, rated power 300W, typical efficiency 93.5%.

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 IP67/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
IP67 / 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-20Specifications from the official datasheet (2026-02-04 edition)

OUTPUT

DC VOLTAGE: 20V
CONSTANT CURRENT REGION^Note.4: 10 ~ 20V
RATED CURRENT: 15A
RATED POWER: 300W
RIPPLE & NOISE (max.)^Note.2: 150mVp-p
VOLTAGE ADJ. RANGE: 17 ~ 22V
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

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-20 BLOCK DIAGRAM — BLOCK DIAGRAM

HLG-320H-20 DIMMING OPERATION — DIMMING OPERATION

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

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

HLG-320H-20 STATIC CHARACTERISTICS — STATIC CHARACTERISTICS

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

HLG-320H-20 MECHANICAL SPECIFICATION — MECHANICAL SPECIFICATION

HLG-320H-20 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

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-20 to power 20V LED modules in a large outdoor sign?

Yes. The HLG-320H-20 delivers 300W at 20V with up to 15A, sufficient for a large array of 20V LED sign modules. The series' IP65/IP67-rated metal housing is designed for indoor and outdoor applications, and the wide 90-305VAC input handles varying mains voltages across different regions.

Is the HLG-320H-20 suitable for powering 20V LED high-mast or area lights?

Yes. At 300W and 20V, it provides the high current (15A) needed for 20V high-mast LED fixtures or large area-light panels. The fanless IP65/IP67-rated metal housing and -40°C to +90°C case-temperature (Tcase) range suit pole-mounted or rooftop installations; output derates at high temperature per the load vs temperature curve.

Can the HLG-320H-20 be used for 20V LED horticultural lighting in a greenhouse?

Yes, provided the grow lights operate at 20V and total draw does not exceed 300W. The constant-current mode with a CC range of 10-20V adapts to the varying forward voltage of LED horticultural panels as they heat up during long photoperiods.

How many watts of 20V LED load can the HLG-320H-20 handle?

The HLG-320H-20 supports up to 300W at 20V (15A). For example, if you have 20V LED fixtures rated at 60W each, you can power up to five fixtures (300W total). Always confirm each fixture's rated wattage and ensure the combined load does not exceed 300W.

Can the HLG-320H-20 be mounted outdoors without an additional weatherproof enclosure?

The HLG-320H series is rated IP65 or IP67 depending on type, and its metal housing is designed for both indoor and outdoor applications. The datasheet does not state immersion performance, so check the rating of your type and the IP installation cautions in MEAN WELL's user manual before a fully exposed outdoor installation.

What are the differences between the HLG-320H-20, 20A, 20AB, and 20B models?

All four share the same 300W / 20V / 15A core output. The base HLG-320H-20 has fixed output with no adjustment or dimming. The -20A adds built-in potentiometers for voltage and current trimming. The -20AB adds a current potentiometer plus a 3-in-1 dimming input (1-10VDC, 10V PWM or resistance). The -20B has the dimming input only. The series is rated IP65 or IP67 depending on type.

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Model	Power	Voltage	Current	IP Rating	Price
Mean Well HLG-320H-24 Power Supply 320W 24V 13.34A	320.16W	24V	13.34A	IP67	$81.83	View
Mean Well HLG-320H-12 Power Supply 264W 12V 22A	264W	12V	22A	IP67	$78.41	View
Mean Well HLG-320H-24B Power Supply 320W 24V- Dimmable 13.34A	320.16W	24V	13.34A	IP67	$81.04	View
Mean Well HLG-320H-12A Power Supply 264W 12V - Adjustable 22A	264W	12V	22A	IP65	$85.00	View
Mean Well HLG-320H-24A Power Supply 320W 24V - Adjustable 13.34A	320.16W	24V	13.34A	IP65	$75.00	View
Mean Well HLG-320H-42A Power Supply 320W 42V - Adjustable 7.65A	321.3W	42V	7.65A	IP65	$86.45	View
Mean Well HLG-320H-48B Power Supply 320W 48V- Dimmable 6.7A	321.6W	48V	6.7A	IP67	$81.04	View

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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