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Mean Well

Mean Well XLC-40-12 LED Driver 40.8W 12V 3.4A

constant voltageclass II and PFCflicker-freebuilt-in use
SKU XLC-40-12
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Overview

XLC-40-12 is the model of this series: rated current 3.4A, rated power 40.8W, typical efficiency 86%.

XLC-40 Series is a 40W with constant power and constant voltage output LED driver . It can operate from 100~305VAC and output current ranging between 600 mA to 1400 mA selectable by dip switch or NFC setting. Thanks to high efficiency up to 88%, it is able to operate for -25℃~90℃ case temperature under free air convection. XLC-40 is designed based on latest safety regulations with 3 in 1 and DALI-2 dimming. XLC-40 can also be adjusted for brightness with a push button as a simple way dimming, so it provides more flexibility for LED Lighting application.

Features

  • Constant power mode output with multiple stage selectable by dip switch or NFC setting (H-type)
  • Constant voltage mode output (12V/24V)
  • Plastic housing with class II and PFC design
  • Meet UL 8750 Class 2 / Class P power unit
  • Flicker free, complying with CE ErP directive
  • Standby power consumption <0.5W
  • Meet emergency lighting (EL) function application
  • Minimum dimming level 0.1% (DALI-2 DT6)
  • Dimming functions: 3 in 1 dimming (Dim-to-off) DALI-2 + Push dimming
  • 5 years warranty

Specifications

XLC-40-12Specifications from the official datasheet (2025-01-20 edition)

OUTPUT

RATED VOLTAGE
12V
RATED CURRENT
3.4A
RATED POWERNote.2 (12V/24V table); Note.4 (H-type table)
40.8W
RIPPLE & NOISE (max.)Note.3 (12V/24V table)
120mVp-p
VOLTAGE TOLERANCENote.4 (12V/24V table)
±4.0%
LINE REGULATION
±0.5%
LOAD REGULATION
±2%
SETUP, RISE TIMENote.5 (12V/24V table); Note.5,6 (H-type table)
500ms, 100ms/230VAC, 1000ms, 100ms/115VAC

INPUT

VOLTAGE RANGE
100 ~ 305VAC 141 ~ 400VDC
FREQUENCY RANGE
47 ~ 63Hz
POWER FACTOR
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<10%(@load≧50%/230VAC; @load≧75%/277VAC), THD<15%(@load≧50%/115VAC) (Please refer to “TOTAL HARMONIC DISTORTION(THD)” section)
EFFICIENCY (Typ.)Note.7 (H-type table)
86%
AC CURRENT
0.5A / 115VAC 0.25A / 230VAC 0.2A/277VAC
INRUSH CURRENT(Typ.)
COLD START 10A(twidth=100μs measured at 50% Ipeak) at 230VAC; Per NEMA 410
MAX. No. of PSUs on 16A CIRCUIT BREAKER
51 units (circuit breaker of type B) / 51 units (circuit breaker of type C) at 230VAC
LEAKAGE CURRENT
<0.75mA / 277VAC

PROTECTION

OVER LOAD
105 ~ 220% rated output power Protection type:Hiccup mode , recovers automatically after fault condition is removed
SHORT CIRCUIT
Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE
13 ~ 16V Shut down and latch off o/p voltage, re-power on to recover
OVER TEMPERATURE
Shut down output voltage, recovers automatically after fault condition is removed

ENVIRONMENT

WORKING TEMP.
Tcase=-25 ~ 90℃ (Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)
MAX. CASE TEMP.
Tcase=90℃
WORKING HUMIDITY
20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-40 ~ +80℃, 10 ~ 95% RH
TEMP. COEFFICIENT
±0.03%/℃ (0 ~ 50℃)
VIBRATION
10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS
ENEC BS EN/EN61347-1, BS EN/EN61347-2-13(EL) appendix J suitable for emergency installations(DC input 176-280VDC); BS EN/EN62384, BIS IS15885(Part2/Sec13)(NOTE 14), GB/T19510.1, GB/T19510.213, EAC TP TC 004,UL8750(Class P); CSA C22.2 No. 250.13-12 approved; Design refer to AS/NZS 61347-1, AS/NZS 61347-2-13
WITHSTAND VOLTAGE
I/P-O/P:3.75KVAC
ISOLATION RESISTANCE
I/P-O/P:>100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
ParameterStandardTest Level
ConductedBS EN/EN55015(CISPR15) ,GB/T 17743
RadiatedBS EN/EN55015(CISPR15) ,GB/T 17743
Harmonic CurrentBS EN/EN61000-3-2 , GB17625.1Class C @load≥50%
Voltage FlickerBS EN/EN61000-3-3
EMC IMMUNITY

BS EN/EN61547

ParameterStandardTest Level
ESDBS EN/EN61000-4-2Level 3, 8KV air; Level 2, 4KV contact
RadiatedBS EN/EN61000-4-3Level 2
EFT/BurstBS EN/EN61000-4-4Level 2
SurgeBS EN/EN61000-4-5Level 3, 1KV/Line-Line
ConductedBS EN/EN61000-4-6Level 2
Magnetic FieldBS EN/EN61000-4-8Level 2
Voltage Dips and InterruptionsBS EN/EN61000-4-1170% residual voltage for 10 period, 0% residual voltage for 0.5 periods

OTHERS

FLICKERNote.6 (12V/24V table); Note.9 (H-type table)
PstLM ≤ 1, SVM ≤ 0.4
MTBF
3935.2 K hrs min. Telcordia SR-332 (Bellcore) ; 342.9 Khrs min. MIL-HDBK-217F (25℃)
DIMENSION
147*40*32mm,107*40*32mm (L*W*H)
PACKING
190g; 60pcs/12.6Kg/0.58CUFT(for blank type); 207g; 50pcs/11.5Kg/0.57CUFT(for S-type)
Test conditions and notes14
  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 need under low input voltages. Please refer to “STATIC CHARACTERISTIC” sections for details.
  3. 3. Ripple & noise are measured at 20MHz of bandwidth by using a 12” twisted pair-wire terminated with a 0.1uF & 47uF parallel capacitor.
  4. 4. Tolerance: includes set up tolerance, line regulation and load regulation.
  5. 5. 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.
  6. 6. Flicker is measured at full load with the light source provided by MEAN WELL.
  7. 7. To fulfill requirement of the latest ErP regulation for lighting fixtures, this LED driver can only be used behind a switch without permanently connected to the mains.
  8. 8. 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)
  9. 9. The ambient temperature de-rating of 3.5℃/1000m with fanless models and 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).
  10. 10. 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.
  11. 11. For XLC-S series: RCM is on a voluntary basis. Non IC classification Independent LED control gear is not suitable for residential installations. For XLC(except -S) series: RCM is on a voluntary basis and meets relevant IEC or AS/NZS standards complying with AS/NZS 4417.1.
  12. 12. Products sourced from the Americas regions may not have the CCC/PSE/BIS/KC logo. Please contact your MEAN WELL sales for more information.
  13. 13. For more information, please contact with MEAN WELL sales.
  14. 14. Products sourced from the China regions and some models sourced from India may not have the BIS logo,please refer to BIS certificate for details and contact your MEAN WELL sales for more information.

Technical drawings

XLC-40-12 BLOCK DIAGRAM
BLOCK DIAGRAM
XLC-40-12 DRIVING METHODS OF LED MODULE
DRIVING METHODS OF LED MODULE
XLC-40-12 NFC Function Description
NFC Function Description
XLC-40-12 DIMMING OPERATION
DIMMING OPERATION
XLC-40-12 ◎ DA2 type (DALI-2 digital dimming function)
◎ DA2 type (DALI-2 digital dimming function)
XLC-40-12 OUTPUT LOAD vs TEMPERATURE
OUTPUT LOAD vs TEMPERATURE
XLC-40-12 LIFE TIME
LIFE TIME
XLC-40-12 TOTAL HARMONIC DISTORTION
TOTAL HARMONIC DISTORTION
XLC-40-12 POWER FACTOR (PF) CHARACTERISTIC
POWER FACTOR (PF) CHARACTERISTIC
XLC-40-12 EFFICIENCY vs LOAD
EFFICIENCY vs LOAD
XLC-40-12 MECHANICAL SPECIFICATION
MECHANICAL SPECIFICATION
XLC-40-12 MECHANICAL SPECIFICATION
MECHANICAL SPECIFICATION

Typical applications

  • Recessed Light
  • Down Light
  • Panel Light
  • Commercial Lighting
  • Decorative Lighting
  • LED strip lighting
  • DALI digital Lighting

Downloads

FAQ

Can I use the XLC-40-12 to power 12V LED strips in a commercial display case or shop fitting?

Yes, the XLC-40-12 outputs 40.8W at 12V, giving it more headroom than the 25W models for longer LED strip runs in commercial display cases or shop fittings. The built-in type form factor fits inside standard luminaire bodies and the compact 107 × 40 × 32 mm case allows installation in tight spaces.

Is the XLC-40-12 suitable for powering 12V LED strip in a retail signage lightbox?

Yes, the XLC-40-12 is well suited to 12V LED lightbox applications, with 40.8W available to support moderate-area backlit signs. The flicker-free output is important for photographic or video recording environments where lightbox flicker would be visible on camera. The wide 100–305VAC input ensures compatibility with mains supplies worldwide.

Can the XLC-40-12 drive 12V LED strips in a hospitality or restaurant mood lighting installation?

Yes, the XLC-40-12 delivers 40.8W at 12V constant voltage, appropriate for hospitality cove or mood lighting that uses 12V LED strip. The flicker-free characteristic is important in dining environments where flicker can cause discomfort to occupants. Note that the standard XLC-40-12 does not include dimming functions; select a DA2 or B type variant if dimming is required.

How much 12V LED strip can the XLC-40-12 power?

The XLC-40-12 provides up to 40.8W at 12V and 3.4A. Divide 40.8W by your strip's rated watts per meter — for a 14.4 W/m strip that is approximately 2.83 m (40.8 ÷ 14.4 ≈ 2.83 m), and for a 9.6 W/m strip about 4.25 m. Always verify your strip's rated power per meter and limit continuous loads to around 80% of driver output for long-term reliability.

What is the operating temperature range of the XLC-40-12, and can it be mounted in a tight ceiling void?

The XLC-40-12 is rated for a case temperature (Tcase) of -25°C to +90°C. Ceiling voids can reach elevated ambient temperatures, so the broad upper limit provides useful headroom. Consult the full datasheet for output derating curves at elevated temperatures to ensure the 40.8W rating is maintained at the ambient temperature in your specific installation.

What is the difference between the XLC-25-12 and the XLC-40-12?

The XLC-25-12 delivers 25.2W at 12V and 2.1A, while the XLC-40-12 delivers 40.8W at 12V and 3.4A — approximately 62% more power. Both share the same 107 × 40 × 32 mm case dimensions, input range of 100–305VAC, and -25°C to +90°C operating temperature. The XLC-40-12 is suitable for longer LED strip runs or higher-wattage loads where the 25.2W model would be insufficient.

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Mean Well XLC-40-12 LED Driver 40.8W 12V 3.4A
Mean Well

Mean Well XLC-40-12 LED Driver 40.8W 12V 3.4A

Log in to see price

XLC-40-12 is the model of this series: rated current 3.4A, rated power 40.8W, typical efficiency 86%.

XLC-40 Series is a 40W with constant power and constant voltage output LED driver . It can operate from 100~305VAC and output current ranging between 600 mA to 1400 mA selectable by dip switch or NFC setting. Thanks to high efficiency up to 88%, it is able to operate for -25℃~90℃ case temperature under free air convection. XLC-40 is designed based on latest safety regulations with 3 in 1 and DALI-2 dimming. XLC-40 can also be adjusted for brightness with a push button as a simple way dimming, so it provides more flexibility for LED Lighting application.

Features

  • Constant power mode output with multiple stage selectable by dip switch or NFC setting (H-type)
  • Constant voltage mode output (12V/24V)
  • Plastic housing with class II and PFC design
  • Meet UL 8750 Class 2 / Class P power unit
  • Flicker free, complying with CE ErP directive
  • Standby power consumption <0.5W
  • Meet emergency lighting (EL) function application
  • Minimum dimming level 0.1% (DALI-2 DT6)
  • Dimming functions: 3 in 1 dimming (Dim-to-off) DALI-2 + Push dimming
  • 5 years warranty

Typical applications

  • Recessed Light
  • Down Light
  • Panel Light
  • Commercial Lighting
  • Decorative Lighting
  • LED strip lighting
  • DALI digital Lighting
View product

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