Mean Well HLG-320H-20B Power Supply 300W 20V - Dimmable | HLG Series - Constant Voltage + Constant Current LED Driver

Name: Mean Well HLG-320H-20B Power Supply 300W 20V- Dimmable 15A
Brand: Mean Well
SKU: HLG-320H-20B
Price: 99.71 USD
Availability: InStock

Overview

HLG-320H-20B is the 20V output model of this series: rated current 15A, rated power 300W, typical efficiency 93.5%. Type B: 3 in 1 dimming function (1~10VDC, 10V PWM signal and resistance) (IP67).

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 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 rating for indoor or outdoor installations
Function options: 3 in 1 dimming
Typical lifettime > 62000 hours
7 years warranty

Specifications

HLG-320H-20BSpecifications 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
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 (this model): 3 in 1 dimming function (1~10VDC, 10V PWM signal and resistance); IP67
AB: 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 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. 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.

Technical drawings

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

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

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

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

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

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

HLG-320H-20B MECHANICAL SPECIFICATION ※B-Type — MECHANICAL SPECIFICATION ※B-Type

HLG-320H-20B 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-20B 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-20B with a dimmer to control large outdoor 20V LED strip runs?

Yes. The HLG-320H-20B supports 1-10V, PWM and resistance dimming and delivers 300W at 20V, and the series' IP65/IP67-rated metal housing is designed for outdoor use. This makes it well suited for outdoor LED strip installations where you need both high power and smooth brightness control.

Is the HLG-320H-20B a good driver for 20V LED flood or area lighting?

Yes. With 300W at 20V and 15A of output current, the HLG-320H-20B can drive high-power 20V LED flood lights or area lighting fixtures. Its IP65/IP67-rated metal housing is designed for outdoor mounting.

Can the HLG-320H-20B power 20V LED modules in an outdoor commercial sign?

Yes. At 300W and 20V it handles substantial signage loads, and the dimming input lets you reduce brightness at night to save energy or meet local ordinances. The IP65/IP67-rated metal housing is designed for indoor and outdoor applications.

How many meters of 20V LED strip can the HLG-320H-20B drive?

The HLG-320H-20B delivers up to 300W. Divide 300 by your strip's wattage per meter to find the maximum length. A strip rated at 10W/m, for example, could run up to 30 meters (300W / 10W per meter = 30m). Always check your strip's rated power per meter before sizing.

Can the HLG-320H-20B be mounted outdoors in direct rain or snow?

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 B-type's rating and the IP installation cautions in MEAN WELL's user manual before mounting it in direct rain or snow without an enclosure.

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

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

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

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Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION

ENVIRONMENT

SAFETY & EMC

OTHERS

MODEL ENCODING

Technical drawings

Typical applications

Downloads

Datasheet1

Certificates5

Test reports1

Catalogues1

FAQ

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

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