Mean Well HLG-120H-12A Power Supply 120W 12V - Adjustable

Name: Mean Well HLG-120H-12A Power Supply 120W 12V - Adjustable 10A
Brand: Mean Well
SKU: HLG-120H-12A
Price: 60.32 USD
Availability: InStock

Overview

HLG-120H-12A is the 12V output model of this series: rated current 10A, rated power 120W, typical efficiency 92%. Type A: Io and Vo adjustable through built-in potentiometer (IP65).

HLG-120H series is a 120W AC/DC LED driver featuring the dual mode constant voltage and constant current output. HLG-120H operates from 90～305VAC and offers models with different rated voltage ranging between 12V and 54V. Thanks to the high efficiency up to 93.5%, with the fanless design, the entire series is able to operate for -40℃ ~ +80℃ 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-120H 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
Typical lifetime > 62000 hours
7 years warranty

Specifications

HLG-120H-12ASpecifications from the official datasheet (2026-07-24 edition)

OUTPUT

DC VOLTAGE: 12V
CONSTANT CURRENT REGION^Note.4: 6 ~12V
RATED CURRENT: 10A
RATED POWER: 120W
RIPPLE & NOISE (max.)^Note.2: 150mVp-p
VOLTAGE ADJ. RANGE: Adjustable (via built-in potentiometer)
VOLTAGE ADJ. RANGE: 10.8 ~ 13.5V
CURRENT ADJ. RANGE: Adjustable (via built-in potentiometer)
CURRENT ADJ. RANGE: 5 ~ 10A
VOLTAGE TOLERANCE^Note.3: ±2.5%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±2.0%
SETUP, RISE TIME^Note.6: 1200ms,50ms/115VAC 500ms,50ms/230VAC
HOLD UP TIME (Typ.): 12ms / 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≧0.93/277VAC @ 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.): 92%
AC CURRENT (Typ.): 1.4A / 115VAC 0.6A / 230VAC 0.55A / 277VAC
INRUSH CURRENT (Typ.): COLD START 60A(twidth=375μs measured at 50% Ipeak) at 230VAC; Per NEMA 410
MAX. No. of PSUs on 16A CIRCUIT BREAKER: 5 units (circuit breaker of type B) / 9 units (circuit breaker of type C) at 230VAC
LEAKAGE CURRENT: <0.75mA / 277VAC

PROTECTION

OVER CURRENT: 95 ~ 108% Constant current limiting, recovers automatically after fault condition is removed
SHORT CIRCUIT: Constant current limiting, recovers automatically after fault condition is removed
OVER VOLTAGE: 14 ~ 17V Shut down o/p voltage with auto-recovery or re-power on to recovery
OVER TEMPERATURE^Note.9: Shut down o/p voltage, recovers automatically after temperature goes down

ENVIRONMENT

WORKING TEMP.: Tcase= -40 ~ +80℃ (Please refer to "OUTPUT LOAD vs TEMPERATURE" section)
MAX. CASE TEMP.: Tcase= +80℃
WORKING HUMIDITY: 20 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +80℃, 10 ~ 95% RH
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 60℃)
VIBRATION: 10 ~ 500Hz, 5G 12min./1cycle, period for 72min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS^Note.8: UL8750 (type”HL”) , CSA C22.2 No. 250.0-08, BS EN/EN 61347-1, BS EN/EN 61347-2-13, AS/NZS 61347-1, AS/NZS 61347-2-13 independent; GB/T19510.1,GB/T19510.213, IP65, J61347-1, J61347-2-13 ,BIS IS15885( for 12B,24B,36A,54A only), EAC TP TC 004 , KC61347-1,KC61347-2-13 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^Note.8: Compliance to BS EN/EN55015, BS EN/EN55032 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, KSC 9815(except for D-type)
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, KSC 9547(except for D-type)

OTHERS

MTBF: 2185.8K hrs min. Telcordia SR-332 (Bellcore); 167.1Khrs min. MIL-HDBK-217F (25℃)
DIMENSION: 220*68*38.8mm (L*W*H)
PACKING: 1.12Kg; 12pcs/14.4Kg/0.8CUFT

MODEL ENCODING

Blank: Io and Vo fixed; IP67
A (this model): 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 and Vo adjustable through built-in potentiometer & 3 in 1 dimming function (1~10Vdc, 10V PWM signal and resistance); IP65
D: Timer dimming function, contact MEAN WELL for details(safety pending); IP67

Test conditions and notes15

Technical drawings

HLG-120H-12A BLOCK DIAGRAM — BLOCK DIAGRAM

HLG-120H-12A Illustration (page 5) — Illustration (page 5)

HLG-120H-12A STATIC CHARACTERISTICS — STATIC CHARACTERISTICS

HLG-120H-12A TOTAL HARMONIC DISTORTION — TOTAL HARMONIC DISTORTION

HLG-120H-12A MECHANICAL SPECIFICATION ※A-Type — MECHANICAL SPECIFICATION ※A-Type

HLG-120H-12A ‧tc : Max. Case Temperature — ‧tc : Max. Case Temperature

HLG-120H-12A Dimensions (mm) — Dimensions (mm)

HLG-120H-12A 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-120H-12A datasheetHLG-120H-SPEC.PDF · 2026-07-24 edition PDF Download

Certificates5

UL Certificate (HLG-120H)(EN) PDF Download

TUV Certificate (HLG-120H)(EN) PDF Download

EMC Certificate (HLG-120H)(EN) PDF Download

PSE Certificate (HLG-120H)(EN) PDF Download

ENEC Certificate(HLG-120H)(EN) PDF Download

Catalogues1

Mean Well LED Driver Catalog PDF Download

FAQ

Can I use the HLG-120H-12A for adjustable 12V LED strip lighting in a covered patio?

Yes. The HLG-120H-12A outputs 12V at up to 10A (120W) with a built-in potentiometer for fine-tuning voltage and current. Its IP65 water-resistant rating makes it suitable for sheltered outdoor areas like covered patios where it is protected from direct rain and standing water.

Is the HLG-120H-12A a good choice for 12V LED channel letter signs where output trimming is needed?

It is well suited for 12V channel letter signage where you need to adjust the output to match specific LED module requirements. The 120W capacity can drive moderate sign arrays, and the adjustable output lets you optimize brightness and current without external resistors.

Can I power 12V LED light bars in a commercial display with the HLG-120H-12A?

Yes. At 120W and 12V, the HLG-120H-12A can drive multiple 12V LED light bars in a display installation. The adjustable output is useful for matching different light bar specifications, and the wide 90-305VAC input handles most commercial power systems.

How many meters of 12V LED strip can the HLG-120H-12A drive?

The HLG-120H-12A provides up to 120W at 12V. Divide 120W by your strip's rated wattage per meter. For instance, a 12V strip rated at 10W/m would allow approximately 12 meters (120W / 10W per meter = 12m). Always check your strip's rated power per meter and stay within the 120W limit.

Is the HLG-120H-12A weatherproof enough for a semi-exposed wall-mounted installation?

The HLG-120H-12A is rated IP65, which protects against dust and low-pressure water jets. For a wall-mounted location under an overhang or soffit where it is shielded from direct rain, IP65 is typically sufficient. For fully exposed mounting with no shelter, consider the IP67-rated HLG-120H-12 or HLG-120H-12B.

What does the 'A' suffix mean on the HLG-120H-12A compared to the base HLG-120H-12?

The 'A' suffix indicates the model includes a built-in potentiometer for adjusting output voltage and current. The base HLG-120H-12 has fixed output. The A variant also carries an IP65 water-resistant rating instead of the base model's IP67 waterproof rating. Both deliver the same 120W, 12V, 10A output at their default settings.

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Mean Well HLG-120H-12A Power Supply 120W 12V - Adjustable 10A

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