Mean Well HLG-320H-42 Power Supply | High Efficiency 320W 42V

Name: Mean Well HLG-320H-42 Power Supply 320W 42V 7.65A
Brand: Mean Well
SKU: HLG-320H-42
Price: 103.12 USD
Availability: InStock

Overview

HLG-320H-42 is the 42V output model of this series: rated current 7.65A, rated power 321.3W, typical efficiency 95%. Type Blank: Io and Vo fixed (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.

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
Typical lifettime > 62000 hours
7 years warranty

Specifications

HLG-320H-42Specifications from the official datasheet (2026-02-04 edition)Download datasheet PDF

OUTPUT

DC VOLTAGE: 42V
CONSTANT CURRENT REGION^Note.4: 21 ~ 42V
RATED CURRENT: 7.65A
RATED POWER: 321.3W
RIPPLE & NOISE (max.)^Note.2: 250mVp-p
VOLTAGE TOLERANCE^Note.3: ±1.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±0.5%
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): 95%
EFFICIENCY (Typ.) (277Vac): 95%
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: 46.5 ~ 53V
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 (this model): 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: 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-42 BLOCK DIAGRAM — BLOCK DIAGRAM

HLG-320H-42 Illustration (page 5) — Illustration (page 5)

HLG-320H-42 OUTPUT LOAD vs TEMPERATURE(Note.10) — OUTPUT LOAD vs TEMPERATURE(Note.10)

HLG-320H-42 STATIC CHARACTERISTICS — STATIC CHARACTERISTICS

HLG-320H-42 TOTAL HARMONIC DISTORTION — TOTAL HARMONIC DISTORTION

HLG-320H-42 MECHANICAL SPECIFICATION ※Blank/D-Type — MECHANICAL SPECIFICATION ※Blank/D-Type

HLG-320H-42 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-42 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-42)(EN) PDF Download

Catalogues1

Mean Well LED Driver Catalog PDF Download

FAQ

Can I use the HLG-320H-42 to power 42V LED strip lighting outdoors?

Yes. The HLG-320H-42 outputs 42V at up to 7.65A (320W), and its IP65/IP67-rated metal housing is designed for indoor and outdoor applications. It is well suited for outdoor 42V LED strip installations, with a case-temperature (Tcase) range of -40°C to +90°C.

Is the HLG-320H-42 suitable for 42V LED high-bay or industrial lighting?

It is a strong choice for industrial and high-bay LED fixtures running at 42V. The 320W output handles large lighting loads, and the IP65/IP67 rating protects the driver in dusty, humid, or wet industrial environments.

Can I power 42V LED signage or billboard modules with the HLG-320H-42?

Yes. The constant-current mode with a 21-42V range ensures stable brightness across LED sign modules, and 320W is sufficient for medium to large signage arrays. The IP65/IP67-rated metal housing allows mounting the driver in outdoor sign cabinets.

How many meters of 42V LED strip can the HLG-320H-42 drive?

Divide 320W by your strip's rated power per meter. For example, a 42V strip consuming 18W/m could run approximately 17.7 meters (320W / 18W per meter). A lower-power strip at 10W/m could extend to about 32 meters. Always check your strip's rated wattage per meter and stay within 320W.

Can the HLG-320H-42 be installed in a location prone to flooding or water exposure?

The HLG-320H series is rated IP65 or IP67 depending on type, and its metal housing is designed for indoor and outdoor applications, but the datasheet does not state a submersion depth. For flood-prone areas, underground installations, or washdown locations, check the rating of your type and the IP installation cautions in MEAN WELL's user manual first.

What are the differences between the HLG-320H-42, 42A, 42AB, and 42B models?

All four share 320W, 42V, 7.65A core specifications. The base HLG-320H-42 has fixed output. The -42A adds output voltage and current adjustment. The -42AB combines current adjustment and 3-in-1 dimming. The -42B offers dimming without potentiometers. The series is rated IP65 or IP67 depending on type.

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Model	Power	Voltage	Current	IP Rating
Mean Well HLG-320H-12 Power Supply 264W 12V 22A	264W	12V	22A	IP67	View

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Mean Well HLG-320H-42 Power Supply 320W 42V 7.65A

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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

Payment & Security

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Mean Well HLG-320H-42 Power Supply 320W 42V 7.65A

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