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Mean Well XLG-50-H-DA2 Power Supply 50W 1050mA - DALI2 Dimmable

constant current region 27~56Vcurrent adjustable from 900~1400mAminimum dimming level 8%

SKU XLG-50-H-DA2

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Overview

XLG-50-H-DA2 is the model of this series: rated power 50W, typical efficiency 89%.

XLG-50-DA2 series is a 50W AC/DC LED driver featuring the constant power mode output. XLG-50-DA2 operates from 90~305VAC. Thanks to the high efficiency up to 89%, the entire series is able to operate between -40℃~85℃ wide case temperature range with air convection. The design of metal housing and IP67 ingress protection level allows this series to fit both indoor and outdoor applications. XLG-50-DA2 is equipped with various function options, such as dimming methodologies, so as to provide the optimal design flexibility for LED lighting system. XLG-50-DA2 series comply with the latest version of IEC61347/GB/T19510.1 and UL8750 international safety regulations. The output and dimming circuit are also completely in accordance with the new regulations with isolation to ensure the safety of both user and luminaire system during installation.

Features

Constant Power mode output
Metal housing design with functional Ground
Built-in active PFC function
Class 2 power unit (except for L type)
Standby power consumption <0.5W
IP67 rating for indoor or outdoor installations
Surge protection with 6KV/4KV
DALI-2 Dimming with minimum level 8%
India (EESL) version with Input Over Voltage Protection can survive input voltage stress of 440Vac for 48 hours
Typical lifetime>50000 hours
5 years warranty

Specifications

XLG-50-H-DA2Specifications from the official datasheet (2026-02-04 edition)

OUTPUT

RATED CURRENT (Default): 1050mA
RATED POWER: 50W
CONSTANT CURRENT REGION^Note.2: 27 ~ 56V
FULL POWER CURRENT RANGE: 900~1400mA
OPEN CIRCUIT VOLTAGE (max.): 60V
CURRENT ADJ. RANGE: (Via the built-in potentiometer)
CURRENT ADJ. RANGE: 500~1400mA
CURRENT RIPPLE: 5.0%(@ full load)
CURRENT TOLERANCE: ±5%
SET UP TIME: 500ms/230VAC, 1200ms/115VAC

INPUT

VOLTAGE RANGE^Note.4: 90 ~ 305VAC 127 ~ 431VDC (Please refer to "STATIC CHARACTERISTIC" section)
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%/115VC,230VAC; @load≧75%/277VAC) (Please refer to “TOTAL HARMONIC DISTORTION(THD)” section)
EFFICIENCY (Typ.)^Note.15: 89%
AC CURRENT: 0.57A / 115VAC 0.29A / 230VAC 0.24A/277VAC
INRUSH CURRENT(Typ.): COLD START 50A(twidth=350μs measured at 50% Ipeak) at 230VAC; Per NEMA 410
MAX. No. of PSUs on 16A CIRCUIT BREAKER: 7 units (circuit breaker of type B) / 12 units (circuit breaker of type C) at 230VAC
LEAKAGE CURRENT: <0.75mA / 277VAC
STANDBY POWER CONSUMPTION: Standby power consumption <0.5W (Dimming OFF)(For standard version)

PROTECTION

SHORT CIRCUIT: Hiccup mode or Constant current limiting, recovers automatically after fault condition is removed
OVER TEMPERATURE: Stage 1: Derating to 75% loading; stage 2: Derating to 50% loading. recovers automatically after fault condition is removed
INPUT OVER VOLTAGE^Note.7: 320 ~ 370VAC (Shut down output voltage when the input voltage exceeds protection voltage,recovers automatically after fault condition is removed) Can survive input voltage stress of 440Vac for 48 hours

ENVIRONMENT

WORKING TEMP.: Tcase=-40 ~ +85℃ (Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)
MAX. CASE TEMP.: Tcase=+85℃
WORKING HUMIDITY: 20 ~ 95%
STORAGE TEMP.: -40 ~ +80℃
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: UL8750(type”HL”), CSA C22.2 No. 250.13-12; ENEC AS/NZS IEC BS EN/EN61347-1, BS EN/EN61347-2-13 (EL) appendix J suitable for emergency installations(DC Input: 176-280Vdc) independent, AS/NZS BS EN/EN61347-2-13 , BS EN/EN62384;IP67; IS 15885(Part2/Sec13)(for XLG-50I-DA2 only);GB/T19510.1, GB/T19510.213, EAC TP TC 004 approved
DALI STANDARDS: Comply with IEC62386-101, 102, 207, 251 for DA2 Type only, Device type 6(DT6)
WITHSTAND VOLTAGE: I/P-O/P:3.75KVAC I/P-FG:2.0KVAC 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: 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 -----; BS EN/EN61547
EMC IMMUNITY: 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 3
EFT/Burst BS EN/EN61000-4-4 Level 3
Surge BS EN/EN61000-4-5 4KV/Line-Line 6KV/Line-Earth
Conducted BS EN/EN61000-4-6 Level 3
Magnetic Field BS EN/EN61000-4-8 Level 4
Voltage Dips and Interruptions BS EN/EN61000-4-11 >95% dip 0.5 periods, 30% dip 25 periods, >95% interruptions 250 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	-----; 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 3
EFT/Burst	BS EN/EN61000-4-4	Level 3
Surge	BS EN/EN61000-4-5	4KV/Line-Line 6KV/Line-Earth
Conducted	BS EN/EN61000-4-6	Level 3
Magnetic Field	BS EN/EN61000-4-8	Level 4
Voltage Dips and Interruptions	BS EN/EN61000-4-11	>95% dip 0.5 periods, 30% dip 25 periods, >95% interruptions 250 periods

OTHERS

MTBF: 2352.4K hrs min. Telcordia SR-332 (Bellcore) 207.3K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 105*63*30mm (L*W*H)
PACKING: 0.42Kg;24pcs/ 11Kg/0.81CUFT

Certifications & ratings

Type: HL
DC Input: 176-280Vdc

Test conditions and notes17

Technical drawings

XLG-50-H-DA2 Block Diagram — Block Diagram

XLG-50-H-DA2 DRIVING METHODS OF LED MODULE — DRIVING METHODS OF LED MODULE

XLG-50-H-DA2 DIMMING OPERATION — DIMMING OPERATION

XLG-50-H-DA2 OUTPUT LOAD vs TEMPERATURE — OUTPUT LOAD vs TEMPERATURE

XLG-50-H-DA2 STATIC CHARACTERISTIC — STATIC CHARACTERISTIC

XLG-50-H-DA2 TOTAL HARMONIC DISTORTION — TOTAL HARMONIC DISTORTION

XLG-50-H-DA2 Mechanical Specification — Mechanical Specification

XLG-50-H-DA2 Recommend Mounting Direction — Recommend Mounting Direction

Typical applications

LED street lighting
LED architectural lighting
LED bay lighting
LED floodlighting
Type "HL" for use in Class I, Division 2 hazardous (Classified) location.

Downloads

Datasheet1

XLG-50-H-DA2 datasheetXLG_50_DA2_spec_sheet.pdf · 2026-02-04 edition PDF Download

FAQ

Can the XLG-50-H-DA2 power LED downlights in a small office or retail setting?

Yes. The XLG-50-H-DA2 provides 50W at 1050mA constant current with a CC voltage range of 27–56V, which is appropriate for driving compact LED downlight modules in small commercial spaces. DALI2 dimming lets you integrate it with standard building automation dimmers.

Is the XLG-50-H-DA2 suitable for low-voltage LED signage modules?

Yes. The driver's constant current region of 27–56V and 50W output make it a practical choice for powering series-connected LED signage modules with lower forward voltages. The IP67 rating also allows use in outdoor signage enclosures.

Can I use the XLG-50-H-DA2 for small LED arrays in display lighting?

Yes. With an adjustable current range of 500–1400mA and a compact form factor (105 × 63 × 30 mm), this driver fits well in tight display lighting fixtures. The number of LEDs in the array depends on each LED's forward voltage relative to the 27–56V CC range.

Does the XLG-50-H-DA2 support outdoor or wet-location installations?

Yes. The driver has an IP67 waterproof rating and an operating temperature range of -40°C to +85°C, making it suitable for outdoor fixtures and enclosures exposed to rain, dust, and temperature extremes.

How many LEDs can the XLG-50-H-DA2 drive in a series string?

The constant current region spans 27–56V, so the number of LEDs is determined by the forward voltage of each LED you select. Choose LEDs whose combined forward voltages sum to between 27V and 56V at your target operating current.

How does the XLG-50-H-DA2 differ from the XLG-50-L-DA2 in the same 50W tier?

Both are 50W DALI2 drivers with IP67 ratings and identical physical dimensions. The XLG-50-H-DA2 operates in the 27–56V CC range at up to 1050mA (adjustable 900–1400mA), while the XLG-50-L-DA2 operates in the 60–142V CC range at up to 700mA (adjustable 300–700mA). Choose the H variant for shorter, lower-voltage strings and the L variant for longer, higher-voltage strings.

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Model	Power	Voltage	Current	IP Rating
Mean Well XLG-50-A Power Supply 50W 1A - Adjustable	50W	57V	1A	IP67	View
Mean Well XLG-50-AB Power Supply 50W 1A - Adjustable and Dimmable	50W	57V	1A	IP67	View
Mean Well XLG-50-L-DA2 Power Supply 50W 700mA - DALI2 Dimmable	50W	160V	700 Milliampere	IP67	View

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