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Mean Well

Mean Well HLN-40H-12B Power Supply 40W 12V - IP64, Dimmable 3.33A

fully isolated plastic caseIP64suitable for signage applicationsClass 2 power unit
SKU HLN-40H-12B
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End of Life, Succeeded by LPF-40-12
Available to order
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Overview

HLN-40H-12B is the 12V output model of this series: rated current 3.33A, rated power 40W, typical efficiency 86.5%.

Features

  • Universal AC input / Full range (up to 305VAC)
  • Built-in active PFC function
  • Protections: Short circuit / Over current / Over voltage / Over temperature
  • Cooling by free air convection
  • OCP point adjustable through output cable or internal potentiometer
  • Fully isolated plastic case with IP64 level
  • Class 2 power unit
  • Three in one dimming function (1~10Vdc or PWM signal or resistance)
  • Suitable for LED lighting, Industrial Lighting and moving sign applications
  • Compliance to worldwide safety regulations for lighting
  • Suitable for dry / damp locations or outdoor application
  • 3 years warranty

Specifications

HLN-40H-12BSpecifications from the official datasheet (2026-02-09 edition)

OUTPUT

DC VOLTAGE
12V
CONSTANT CURRENT REGIONNote.4
7.2 ~12V
RATED CURRENT
3.33A
RATED POWER
40W
RIPPLE & NOISE (max.)Note.2
150mVp-p
VOLTAGE ADJ. RANGENote.6
10.8 ~ 13.5V
CURRENT ADJ. RANGE
Can be adjusted by internal potentiometer A type only
CURRENT ADJ. RANGE
2 ~ 3.33A
VOLTAGE TOLERANCENote.3
±2.5%
LINE REGULATION
±0.5%
LOAD REGULATION
±2.0%
SETUP, RISE TIMENote.7
500ms, 80ms at full load 230VAC / 115VAC
HOLD UP TIME (Typ.)
16ms/230VAC 16ms/115VAC at full load

INPUT

VOLTAGE RANGENote.5
90 ~ 305VAC 127 ~ 431VDC
FREQUENCY RANGE
47 ~ 63Hz
POWER FACTOR (Typ.)
PF>0.98/115VAC, PF>0.95/230VAC, PF>0.92/277VAC at full load (Please refer to "Power Factor Characteristic" curve)
TOTAL HARMONIC DISTORTION
THD< 20% when output loading≧60% at 115VAC/230VAC input and output loading≧75% at 277VAC input
EFFICIENCY (Typ.)
86.5%
AC CURRENT (Typ.)
0.43A / 115VAC 0.24A / 230VAC 0.23A / 277VAC
INRUSH CURRENT(Typ.)
COLD START 50A(twidth=210μs measured at 50% Ipeak) at 230VAC
MAX. No. of PSUs on 16A CIRCUIT BREAKER
12 units (circuit breaker of type B) / 20 units (circuit breaker of type C) at 230VAC
LEAKAGE CURRENT
<0.75mA / 277VAC

PROTECTION

OVER CURRENTNote.4
95 ~ 108% Protection type : Constant current limiting, recovers automatically after fault condition is removed
SHORT CIRCUIT
Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE
15 ~ 21V Protection type : Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE
Shut down o/p voltage, re-power on to recover

ENVIRONMENT

WORKING TEMP.
-40 ~ +50℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY
-40 ~ +80℃, 10 ~ 95% RH
TEMP. COEFFICIENT
±0.03%/℃ (0 ~ 40℃)
VIBRATION
10 ~ 500Hz, 2G 12min./1cycle, period for 72min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS
UL8750, CSA C22.2 No. 250.0-08 , BS EN/EN 61347-1, BS EN/EN 61347-2-13 independent, IP64, EAC TP TC 004 approved ; design refer to UL60950-1, BS EN/EN60335-1
WITHSTAND VOLTAGE
I/P-O/P:3.75KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
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/EN61000-3-2 Class C (≧60% load) ; BS EN/EN61000-3-3, 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 4KV), EAC TP TC 020

OTHERS

MTBF
3396.4K hrs min. Telcordia SR-332(Bellcore) ; 346.2K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
161*61.5*35mm (L*W*H)
PACKING
0.35Kg;32pcs/12.2Kg/1.10CUFT
Test conditions and notes12
  1. 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
  2. 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. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. Please refer to "DRIVING METHODS OF LED MODULE".
  5. 5. Derating may be needed under low input voltages. Please check the static characteristics for more details.
  6. 6. A type only.
  7. 7. Length of set up time is measured at cold first start. Turning ON/OFF the power supply may lead to increase of the set up time.
  8. 8. The power supply 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)
  9. 9. To fulfill requirements of the latest ErP regulation for lighting fixtures, this LED power supply can only be used behind a switch without permanently connected to the mains.
  10. 10. 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).
  11. 11. This product is not suitable for LED lighting applications in China.(It is recommended to use the LPF/NPF/XLG/XLC/XLN series in China)
  12. 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

Technical drawings

HLN-40H-12B Mechanical Specification
Mechanical Specification
HLN-40H-12B Block Diagram
Block Diagram
HLN-40H-12B Derating Curve
Derating Curve
HLN-40H-12B Power Factor Characteristic
Power Factor Characteristic
HLN-40H-12B EFFICIENCY vs LOAD (48V Model)
EFFICIENCY vs LOAD (48V Model)
HLN-40H-12B H L N - 4 0 H series
H L N - 4 0 H series
HLN-40H-12B H L N - 4 0 H series (2)
H L N - 4 0 H series (2)
HLN-40H-12B DIMMING OPERATION(for B-type only)
DIMMING OPERATION(for B-type only)
HLN-40H-12B ※ Please DO NOT connect "DIM-" to "-V".
※ Please DO NOT connect "DIM-" to "-V".
HLN-40H-12B H L N - 4 0 H series
H L N - 4 0 H series
HLN-40H-12B H L N - 4 0 H series (2)
H L N - 4 0 H series (2)

Downloads

FAQ

Can I use the HLN-40H-12B for 12V LED signage modules?

Yes, signage is a typical application for this model, which provides 12V output up to 3.33A with 40W maximum power. It fits 12V sign lighting loads within the 40W limit, or LEDs driven directly within the 7.2-12V constant-current region.

Is the HLN-40H-12B suitable for 12V LED strip lighting in display or accent projects?

It can be used where the lighting load matches 12V and stays within 40W total output. The driver delivers up to 3.33A, so the strip or lighting product needs to match both the 12V output and the available current.

Can this driver power 12V lighting for sign cabinets or channel letters?

Yes, that is a reasonable use case because the unit is rated 12V, 40W and signage is a typical application for it. Its IP64 housing also makes it better suited to locations where dust or splashing water are concerns than an indoor-only unit.

Can I use the HLN-40H-12B for damp-location decorative lighting?

It can suit 12V decorative lighting where the load remains within 40W and 3.33A, and where an IP64 enclosure is appropriate. The operating temperature range of -40°C to +50°C also supports use in cold and hot environments within that range.

How much 12V LED strip can the HLN-40H-12B run?

The maximum load is 40W at 12V, with up to 3.33A output. Estimated strip length = 40W divided by your strip's rated power per meter, and you should check your strip rated power per meter before sizing.

Is the HLN-40H-12B okay for outdoor or wet areas?

It has an IP64 rating, so it is suited to environments with dust exposure and splashing water rather than fully submerged conditions. Its operating temperature range is -40°C to +50°C, so outdoor use should stay within that temperature range.

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Mean Well HLN-40H-12B Power Supply 40W 12V - IP64, Dimmable 3.33A
Mean Well

Mean Well HLN-40H-12B Power Supply 40W 12V - IP64, Dimmable 3.33A

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HLN-40H-12B is the 12V output model of this series: rated current 3.33A, rated power 40W, typical efficiency 86.5%.

Features

  • Universal AC input / Full range (up to 305VAC)
  • Built-in active PFC function
  • Protections: Short circuit / Over current / Over voltage / Over temperature
  • Cooling by free air convection
  • OCP point adjustable through output cable or internal potentiometer
  • Fully isolated plastic case with IP64 level
  • Class 2 power unit
  • Three in one dimming function (1~10Vdc or PWM signal or resistance)
  • Suitable for LED lighting, Industrial Lighting and moving sign applications
  • Compliance to worldwide safety regulations for lighting
  • Suitable for dry / damp locations or outdoor application
  • 3 years warranty
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