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Mean Well XLN-40-12 LED Driver 40.8W 12V IP67 3.4A

constant voltageclass II and PFCflicker-free

SKU XLN-40-12

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Overview

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

XLN-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 NFC setting. Thanks to high efficiency up to 88%, it is able to operate for -25℃ ~90℃ case temperature under free air convection. XLN-40 is designed based on latest safety regulation with 3 in 1 and DALI-2 dimming. XLN-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 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
Fully encapsulated with IP67
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

XLN-40-12Specifications from the official datasheet (2026-02-04 edition)

OUTPUT

RATED VOLTAGE: 12V
RATED CURRENT: 3.4A
RATED POWER^Note.2: 40.8W
RIPPLE & NOISE (max.)^Note.3: 120mVp-p
VOLTAGE TOLERANCE^Note.4: ±4.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±2%
SETUP, RISE TIME^Note.5: 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.): 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(Type HL and 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: Parameter Standard Test Level

Conducted BS EN/EN55015(CISPR15) ,GB/T 17743
Radiated BS EN/EN55015(CISPR15) ,GB/T 17743
Harmonic Current BS EN/EN61000-3-2 , GB17625.1 Class C @load≥50%
Voltage Flicker BS EN/EN61000-3-3
EMC IMMUNITY: BS EN/EN61547

Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, 8KV air; Level 2, 4KV contact
Radiated BS EN/EN61000-4-3 Level 2
EFT/Burst BS EN/EN61000-4-4 Level 2
Surge BS EN/EN61000-4-5 Level 3, 1KV/Line-Line
Conducted BS EN/EN61000-4-6 Level 2
Magnetic Field BS EN/EN61000-4-8 Level 2
Voltage Dips and Interruptions BS EN/EN61000-4-11 70% residual voltage for 10 period, 0% residual voltage for 0.5 periods

Parameter	Standard	Test Level
Conducted	BS EN/EN55015(CISPR15) ,GB/T 17743
Radiated	BS EN/EN55015(CISPR15) ,GB/T 17743
Harmonic Current	BS EN/EN61000-3-2 , GB17625.1	Class C @load≥50%
Voltage Flicker	BS EN/EN61000-3-3

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 3, 8KV air; Level 2, 4KV contact
Radiated	BS EN/EN61000-4-3	Level 2
EFT/Burst	BS EN/EN61000-4-4	Level 2
Surge	BS EN/EN61000-4-5	Level 3, 1KV/Line-Line
Conducted	BS EN/EN61000-4-6	Level 2
Magnetic Field	BS EN/EN61000-4-8	Level 2
Voltage Dips and Interruptions	BS EN/EN61000-4-11	70% residual voltage for 10 period, 0% residual voltage for 0.5 periods

OTHERS

FLICKER^Note.6: PstLM ≤ 1, SVM ≤ 0.4
MTBF: 3935.2 K hrs min. Telcordia SR-332 (Bellcore) ; 342.9 Khrs min. MIL-HDBK-217F (25℃)
DIMENSION: 114*44*32mm (L*W*H)
PACKING: 308g; 40pcs/13.32Kg/0.95CUFT

Certifications & ratings

DC Input: 176-280VDC

Test conditions and notes14

1. All parameters NOT specially mentioned are measured at 230VAC input, rated current and 25℃ of ambient temperature.
2. De-rating may be need under low input voltages. Please refer to “STATIC CHARACTERISTIC” sections for details.
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. Tolerance: includes set up tolerance, line regulation and load regulation.
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. Flicker is measured at full load with the light source provided by MEAN WELL.
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. 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. 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. 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. RCM is on a voluntary basis. Non IC classification Independent LED control gear is not suitable for residential installations.
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. For more information, please contact with MEAN WELL sales.
14. Products sourced from the China regions may not have the BIS logo, please contact your MEAN WELL sales for more information.

Technical drawings

XLN-40-12 DRIVING METHODS OF LED MODULE — DRIVING METHODS OF LED MODULE

XLN-40-12 NFC Function Description — NFC Function Description

XLN-40-12 DIMMING OPERATION — DIMMING OPERATION

XLN-40-12 ◎ DA2 type (DALI-2 digital dimming function) — ◎ DA2 type (DALI-2 digital dimming function)

XLN-40-12 ◎ DA2 type (DALI-2 digital dimming function) (2) — ◎ DA2 type (DALI-2 digital dimming function) (2)

XLN-40-12 OUTPUT LOAD vs TEMPERATURE — OUTPUT LOAD vs TEMPERATURE

XLN-40-12 TOTAL HARMONIC DISTORTION — TOTAL HARMONIC DISTORTION

XLN-40-12 POWER FACTOR (PF) CHARACTERISTIC — POWER FACTOR (PF) CHARACTERISTIC

XLN-40-12 EFFICIENCY vs LOAD — EFFICIENCY vs LOAD

XLN-40-12 MECHANICAL SPECIFICATION — MECHANICAL SPECIFICATION

Typical applications

Downloads

Datasheet1

XLN-40-12 datasheetXLN_40_spec_sheet.pdf · 2026-02-04 edition PDF Download

FAQ

What is the output rating of the Mean Well XLN-40-12?

The XLN-40-12 is rated for 40.8 W output power. It provides 12 V output at up to 3.4 A rated current, making it suitable for constant-voltage 12 V LED loads within that power range.

Is the XLN-40-12 suitable for 12 V LED lighting?

Yes. This model is a 12 V constant-voltage LED driver, so it is intended for compatible 12 V LED lighting products that stay within its 40.8 W and 3.4 A ratings.

Can the Mean Well XLN-40-12 be used in wet or dusty environments?

The XLN-40-12 has a fully encapsulated IP67 design. That rating indicates strong protection against dust and water exposure, making it appropriate for many demanding LED lighting environments where an IP67-rated driver is required.

What temperature range does the XLN-40-12 support?

This model is specified for operation from -25 °C to 90 °C. Buyers should confirm the actual application environment stays within that listed temperature range.

Is the XLN-40-12 dimmable?

The XLN-40-12 is a constant-voltage model with a fixed output; it does not support dimming. Dimming functions (DALI-2, push-button, or 3-in-1) are available only on specific H-type variants (e.g., XLN-40-H-B or XLN-40-H-DA2).

What applications is the Mean Well XLN-40-12 typically used for?

The XLN-40-12 is used for 12 V constant-voltage LED driver applications where a compact 40.8 W power supply is needed. Its IP67 encapsulated plastic housing and wide temperature rating make it relevant for LED lighting projects that need protected, reliable power conversion.

How long is the warranty on the XLN-40-12?

The XLN-40-12 includes a 5-year warranty according to the provided product data. That warranty period is a useful consideration for commercial and B2B LED lighting projects.

Payment & Security

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Model	Power	Voltage	Current	IP Rating
Mean Well XLN-40-H-DA2 LED Driver 40W 1050mA 9~54V Constant Power IP67, DALI2 + Push Dimming, NFC Current Setting	40W	60V	1050 Milliampere	IP67	View
Mean Well XLN-40-H-B LED Driver 40W 1050mA 9~54V Constant Power IP67, 3 in 1 Dimming, NFC Current Setting	40W	60V	1050 Milliampere	IP67	View
Mean Well XLN-40-H LED Driver 40W 1050mA 9~54V Constant Power IP67, NFC Current Setting	40W	60V	1050 Milliampere	IP67	View
Mean Well XLN-40-24 LED Driver 40.8W 24V IP67 1.7A	40.8W	24V	1.7A	IP67	View

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