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Mean Well

Mean Well NPF-40D-36 Power Supply 40W 36V - Dimmable 1.12A

fully isolated plastic caseIP67Class II design without FGbuilt-in 3 in 1 dimming
SKU NPF-40D-36
$31.55 USD
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Select model — 10 in this family

NPF-40D-36
Available to order
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Overview

NPF-40D-36 is the model of this series: rated current 1.12A, rated power 40.32W, typical efficiency 90%.

NPF-40D series is a 40W AC/DC LED driver featuring the constant current mode output. NPF-40D operates from 90~305VAC and offers models with different rated voltage ranging between 12V and 54V. Thanks to the high efficiency up to 90%, with the fanless design, the entire series is able to operate for -40℃~+85℃ case temperature under free air convection. The entire series is rated with IP67 ingress protection level and is suitable to work for a variety of applications at dry, damp or wet locations. NPF-40D is equipped with the 3 in 1 dimming function so as to provide the design flexibility for LED lighting system.

Features

  • Plastic housing with class II design
  • Built-in active PFC function
  • Class 2 power unit
  • Standby power consumption <0.5W
  • IP67 rating for indoor or outdoor installations
  • Function: 3 in 1 dimming (dim-to-off)
  • Typical lifetime >50000hours
  • 5 years warranty

Specifications

NPF-40D-36Specifications from the official datasheet (2026-02-09 edition)

OUTPUT

RATED CURRENT
1.12A
RATED POWER
40.32W
CONSTANT CURRENT REGION
21.6 ~ 36V
CURRENT RIPPLE
5.0% max. @rated current
CURRENT TOLERANCE
±5.0%
SET UP TIMENote.3
500ms/115VAC, 230VAC

INPUT

VOLTAGE RANGENote.2
90 ~ 305VAC 127 ~ 431VDC (Please refer to "STATIC CHARACTERISTIC" section)
FREQUENCY RANGE
47 ~ 63Hz
POWER FACTOR (Typ.)
PF≧0.97/115VAC, PF≧0.95/230VAC, PF≧0.92/277VAC@full load (Please refer to "POWER FACTOR (PF) CHARACTERISTIC" section)
TOTAL HARMONIC DISTORTION
THD< 20%(@load≧60%/115VC, 230VAC; @load≧75%/277VAC) (Please refer to “TOTAL HARMONIC DISTORTION(THD)” section)
EFFICIENCY(Typ.)
90%
AC CURRENT (Typ.)
0.6A / 115VAC 0.3A / 230VAC 0.25A / 277VAC
INRUSH CURRENT(Typ.)
COLD START 50A(twidth=270μs measured at 50% Ipeak) at 230VAC; Per NEMA 410
MAX. NO. of PSUs on 16A CIRCUIT BREAKER
9 units (circuit breaker of type B) / 16 units (circuit breaker of type C) at 230VAC
LEAKAGE CURRENT
<0.25mA / 277VAC
STANDBY POWER CONSUMPTION
<0.5W

PROTECTION

OVER CURRENT
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
41 ~ 46V 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.
Tcase=-40 ~ +85℃ (Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)
MAX. CASE TEMP.
Tcase=+85℃
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"), UL879(for 12V,24V only), CSA C22.2 No. 250.13-12, ENEC BS EN/EN61347-1, BS EN/EN61347-2-13, BS EN/EN62384 independent, EAC TP TC 004, GB/T19510.1,GB/T19510.213, IP67 approved ; Design refer to BS EN/EN60335-1
WITHSTAND VOLTAGE
I/P-O/P:3.75KVAC
ISOLATION RESISTANCE
I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
Compliance to BS EN/EN55015, BS EN/EN61000-3-2 Class C (@ load≧60%) ; 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, light industry level(surge immunity Line-Line 2KV);EAC TP TC 020

OTHERS

MTBF
3084.3K hrs min. Telcordia SR-332 (Bellcore) ; 288.2K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
150*53*35mm (L*W*H)
PACKING
0.49Kg;30pcs/15.7Kg/1.0CUFT
Test conditions and notes9
  1. 1. All parameters NOT specially mentioned are measured at 230VAC input, rated current and 25℃ of ambient temperature.
  2. 2. De-rating may be needed under low input voltages. Please refer to “STATIC CHARACTERISTIC” sections for details.
  3. 3. 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.
  4. 4. The standby power consumption is specified for 230VAC.
  5. 5. 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)
  6. 6. This series meets the typical life expectancy of >50,000 hours of operation when Tcase, particularly tc point (or TMP, per DLC), is about 75℃ or less.
  7. 7. Please refer to the warranty statement on MEAN WELL's website at http://www.meanwell.com
  8. 8. 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).
  9. 9. 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

NPF-40D-36 BLOCK DIAGRAM
BLOCK DIAGRAM
NPF-40D-36 DIMMING OPERATION
DIMMING OPERATION
NPF-40D-36 OUTPUT LOAD vs TEMPERATURE
OUTPUT LOAD vs TEMPERATURE
NPF-40D-36 STATIC CHARACTERISTIC
STATIC CHARACTERISTIC
NPF-40D-36 TOTAL HARMONIC DISTORTION
TOTAL HARMONIC DISTORTION
NPF-40D-36 LIFE TIME
LIFE TIME
NPF-40D-36 MECHANICAL SPECIFICATION
MECHANICAL SPECIFICATION
NPF-40D-36 Recommend Mounting Direction
Recommend Mounting Direction

Typical applications

  • LED panel lighting
  • LED downlight
  • LED decorative lighting
  • LED tunnel lighting
  • Moving sign
  • Type "HL" for use in Class I, Division 2 hazardous (Classified) location

Downloads

FAQ

What dimming inputs does the NPF-40D-36 support?

The NPF-40D-36 has built-in 3-in-1 dimming: 0–10VDC, 10V PWM signal, and resistance (potentiometer) control. All three are built in and applied between the DIM+ and DIM- wires, without external dimming hardware.

Is the NPF-40D-36 suitable for outdoor or damp-location installations?

Yes. The NPF-40D-36 is IP67 approved and operates at a case temperature (Tcase) of -40°C to +85°C. Its compact 150 × 53 × 35 mm IP67 housing allows mounting inside outdoor low-wattage luminaires, horticultural enclosures, and damp industrial installations.

What 36V LED applications match the NPF-40D-36's dimmable 40W output?

The NPF-40D-36 provides 1.12A constant current (40.32W) over a 21.6–36V CC region with 3-in-1 dimming. It suits compact dimmable 36V LED systems in architectural accent lighting, small commercial display fixtures, and point-of-sale lighting where 0–10V or PWM scene control at low wattage is specified.

How does the NPF-40D-36 compare to the NPF-40D-42?

Both share IP67, 3-in-1 dimming, the 150 × 53 × 35 mm housing, 90% efficiency, and 0.49 kg weight. NPF-40D-36 drives 1.12A up to 36V (40.32W, CC range 21.6–36V); NPF-40D-42 drives 0.96A up to 42V (40.32W, CC range 25.2–42V). They differ in output voltage and current; select based on your LED module's rating.

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Mean Well NPF-40D-36 Power Supply 40W 36V - Dimmable 1.12A
Mean Well

Mean Well NPF-40D-36 Power Supply 40W 36V - Dimmable 1.12A

$31.55 USD

NPF-40D-36 is the model of this series: rated current 1.12A, rated power 40.32W, typical efficiency 90%.

NPF-40D series is a 40W AC/DC LED driver featuring the constant current mode output. NPF-40D operates from 90~305VAC and offers models with different rated voltage ranging between 12V and 54V. Thanks to the high efficiency up to 90%, with the fanless design, the entire series is able to operate for -40℃~+85℃ case temperature under free air convection. The entire series is rated with IP67 ingress protection level and is suitable to work for a variety of applications at dry, damp or wet locations. NPF-40D is equipped with the 3 in 1 dimming function so as to provide the design flexibility for LED lighting system.

Features

  • Plastic housing with class II design
  • Built-in active PFC function
  • Class 2 power unit
  • Standby power consumption <0.5W
  • IP67 rating for indoor or outdoor installations
  • Function: 3 in 1 dimming (dim-to-off)
  • Typical lifetime >50000hours
  • 5 years warranty

Typical applications

  • LED panel lighting
  • LED downlight
  • LED decorative lighting
  • LED tunnel lighting
  • Moving sign
  • Type "HL" for use in Class I, Division 2 hazardous (Classified) location

Model

  • 40W 36V
  • 40W 36V Dimmable
  • 60W 36V
  • 60W 36V Dimmable
  • 90W 36V
  • 90W 36V Dimmable
  • 120W 36V
  • 120W 36V Dimmable
  • 200W 36V
  • 200W 36V Dimmable
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