Mean Well HLG-320H-12AB Power Supply 264W 12V

Name: Mean Well HLG-320H-12AB Power Supply 264W 12V - Adjustable and Dimmable 22A
Brand: Mean Well
SKU: HLG-320H-12AB
Price: 101.51 USD
Availability: InStock
Rating: 5.0 (4 reviews)

Overview

HLG-320H-12AB is the 12V output model of this series: rated current 22A, rated power 264W, typical efficiency 91%. 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-12ABSpecifications from the official datasheet (2026-02-04 edition)Download datasheet PDF

OUTPUT

DC VOLTAGE: 12V
CONSTANT CURRENT REGION^Note.4: 6 ~12V
RATED CURRENT: 22A
RATED POWER: 264W
RIPPLE & NOISE (max.)^Note.2: 150mVp-p
CURRENT ADJ. RANGE: 11 ~ 22A
VOLTAGE TOLERANCE^Note.3: ±3.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±2.0%
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): 91%
EFFICIENCY (Typ.) (277Vac): 91.5%
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: 14 ~ 17V
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-12AB BLOCK DIAGRAM — BLOCK DIAGRAM

HLG-320H-12AB DIMMING OPERATION — DIMMING OPERATION

HLG-320H-12AB Illustration (page 5) — Illustration (page 5)

HLG-320H-12AB OUTPUT LOAD vs TEMPERATURE(Note.10) — OUTPUT LOAD vs TEMPERATURE(Note.10)

HLG-320H-12AB STATIC CHARACTERISTICS — STATIC CHARACTERISTICS

HLG-320H-12AB TOTAL HARMONIC DISTORTION — TOTAL HARMONIC DISTORTION

HLG-320H-12AB 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-12AB 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-12)(EN) PDF Download

Catalogues1

Mean Well LED Driver Catalog PDF Download

FAQ

Can I use the HLG-320H-12AB to power long runs of 12V LED strip lighting in a commercial space?

Yes. The HLG-320H-12AB provides 264W at 12V with up to 22A of output current, making it well suited for extensive 12V LED strip installations in retail displays, office cove lighting, or hospitality environments. The built-in dimming input lets you integrate with a building management system for scene control.

Is the HLG-320H-12AB suitable for powering 12V LED channel letter signage?

Yes. At 264W and 12V, the HLG-320H-12AB can drive a substantial bank of 12V LED sign modules. The series' IP65/IP67-rated metal housing is designed for indoor and outdoor use, making it appropriate for semi-sheltered outdoor sign cabinets or covered canopy locations.

Can the HLG-320H-12AB power 12V LED under-cabinet lighting across a large kitchen?

Yes. With 264W available at 12V, the HLG-320H-12AB can drive a large array of under-cabinet LED strips. The current potentiometer lets you set the output current (11-22A), and the dimming input allows brightness control via a 1-10V, PWM or resistance signal from a wall dimmer.

How many meters of 12V LED strip can the HLG-320H-12AB support?

That depends on your strip's rated power per meter. The HLG-320H-12AB delivers up to 264W at 12V. For example, a strip rated at 14.4W/m would allow up to 264 / 14.4 = approximately 18.3 meters. Always check your strip's rated power per meter and keep total wattage at or below 264W.

Can the HLG-320H-12AB be mounted in a sheltered outdoor location like a building soffit?

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

What are the differences between the HLG-320H-12, 12A, 12AB, and 12B models?

All four share the same 264W / 12V / 22A core output. The base HLG-320H-12 has no output adjustment or dimming. The -12A adds built-in potentiometers for voltage and current adjustment. The -12AB adds a current potentiometer plus a 3-in-1 dimming input (1-10VDC, 10V PWM or resistance). The -12B adds 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	$85.04	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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Mean Well HLG-320H-12AB Power Supply 264W 12V - Adjustable and Dimmable 22A

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