Name: MEAN WELL XLG-50-DA2 series: DALI-2 Constant-Power LED Driver - XLG-50-H-DA2
Brand: MEAN WELL
SKU: XLG-50-H-DA2
Price: 59.64 USD
Availability: InStock

MEAN WELL XLG-50-DA2 series: DALI-2 Constant-Power LED Driver - XLG-50-H-DA2

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Description

XLG-50-H-DA2 LED driver

MEAN WELL XLG-50-H-DA2 is a 50 W constant-power AC/DC LED driver in the XLG-50-DA2 series. It provides a 1050 mA rated output, a 27–56 V constant-current operating region, built-in current adjustment and isolated DALI-2 dimming. The fanless metal enclosure is IP67. Standard version.

Download MEAN WELL XLG-50-DA2 Datasheet (PDF)Download MEAN WELL LED Installation Manual

XLG-DA2 catalog, PDF pages 1–6; XLG-50-DA2 specification dated 2026-02-04. Use the exact output and function suffix when selecting the driver.

Output and exact model

Exact model / family	XLG-50-H-DA2 / XLG-50-DA2; H output type; Standard version.
Rated power / current	50 W / 1050 mA
Constant-current region	27–56 V; the LED operating point must remain in the shaded I–V envelope.
Full-power current range	900–1400 mA; constant-power operation within the specified envelope, subject to temperature and input-voltage derating.
Maximum open-circuit voltage	60 V
Output-current adjustment	500–1400 mA via built-in potentiometer; adjustment and full-power ranges are different.
Current ripple / tolerance	5.0% at full load / ±5%; tolerance includes setup, line regulation and load regulation.
I–V selection boundaries	500 mA/56 V; 900 mA/56 V; 1400 mA/36 V; 1400 mA/27 V; 900 mA/27 V. These plotted boundary coordinates are rounded reference points; select within the shaded region and rated power, not an unrestricted voltage/current rectangle.
Nominal constant-power operation	Full-power operation uses the specified 900–1400 mA current range within this model’s I–V envelope. Observe the rated power and all input-voltage and temperature limits.
Auxiliary output	This exact 50–100 W DA2 model has no specified 12 V/250 mA auxiliary output. That option belongs to the DA2-A versions in the 150–320 W families.

DALI-2 control

Control interface	DALI-2 control between DA+ (purple) and DA− (pink), with 16 groups and 64 addresses. The first dimming step is fixed at 8% of output.
Protocol	IEC 62386-101, -102, -207 and -251; device type 6 (DT6). Output and dimming circuitry use isolation as described in the datasheet.
Setup time	500 ms at 230 VAC; 1200 ms at 115 VAC, measured at the first cold start. Repeated ON/OFF switching can increase the setup time.
DALI startup condition	IEC 62386-101/102 timing and interruption testing requires a DALI controller supporting the DALI power-on function; otherwise setup may exceed 500 ms.
Standby power	<0.5 W with dimming OFF, for the standard version.

Input and electrical performance

Input range / frequency	90–305 VAC / 127–431 VDC / 47–63 Hz.
Typical efficiency	89% at the model-specific specification conditions.
Power factor	≥0.97 at 115 VAC, ≥0.95 at 230 VAC and ≥0.92 at 277 VAC, at full load.
THD	<10% at ≥50% load for 115/230 VAC, and ≥75% load for 277 VAC.
AC input current	0.57 A / 0.29 A / 0.24 A at 115 / 230 / 277 VAC respectively.
Cold-start inrush	50 A, 350 μs pulse width measured at 50% of peak, at 230 VAC; per NEMA 410.
16 A circuit-breaker loading	7 units on type B / 12 units on type C at 230 VAC.
Leakage current	<0.75 mA at 277 VAC.
Input-voltage derating	At 60 Hz, the static graph permits about 90% load at 90 VAC, rising to 100% at 100 VAC and remaining at 100% through 305 VAC.
Typical-curve conditions	PF is plotted in constant-current mode at Tcase 75°C. THD and efficiency graphs use XLG-50-H-DA2 at Tcase 75°C and 115/230/277 VAC; these are typical curves, not additional guaranteed ratings.
Switching-frequency references	PFC 50–120 kHz; PWM 65 kHz.

Protection

Short-circuit protection	Hiccup mode or constant-current limiting; automatically recovers after the fault is removed.
Overtemperature protection	Stage 1 reduces output to 75% loading; stage 2 reduces output to 50% loading. Operation recovers automatically after the fault condition is removed.
Input-overvoltage protection	The input-overvoltage protection and 440 VAC / 48-hour stress capability apply only to the India I version and are not assigned to this standard model.
Surge immunity	4 kV line-to-line / 6 kV line-to-earth; BS EN/EN 61000-4-5.

Temperature and reliability

Case temperature	Tcase −40 to +85°C; maximum case temperature +85°C. Case-temperature ratings are separate from ambient-temperature limits.
Ambient-temperature derating	Horizontal mounting with free-air convection: at 230 VAC, 100% load through Ta 60°C, reducing to 60% at Ta 70°C; at 100 VAC, 100% through Ta 50°C, reducing to 60% at Ta 60°C. The curves end at those limits; do not extrapolate them.
Cold operation	The −40 to −30°C portion is specified for 230 VAC input only. Below 120 VAC at −30°C, restarting may occur within 5 seconds after power-on.
Case-temperature load curve	The horizontal-mounting curve maintains 100% load to Tcase 85°C and ends there; it does not extend the ambient-temperature range.
Working humidity	20–95% RH.
Storage	−40 to +80°C.
Temperature coefficient	±0.03%/°C over 0–60°C.
Vibration	10–500 Hz, 5 G; 12 minutes per cycle, 72 minutes on each X, Y and Z axis.
Altitude derating	Above 2000 m (6500 ft), reduce permitted ambient temperature by 3.5°C per additional 1000 m for this fanless model.
Life expectancy / warranty	Typical operating life >50,000 hours when the tc point (TMP per DLC) is about 75°C or below; 5-year warranty subject to MEAN WELL terms. The lifetime graph is a temperature-dependent estimate, not an extension of the warranty.
MTBF	2352.4 K hours minimum, Telcordia SR-332 (Bellcore); 207.3 K hours minimum, MIL-HDBK-217F at 25°C.

Safety and EMC

Enclosure and grounding	IP67 metal housing with functional ground and the protective-earth/FG connection shown in the wiring diagram. Follow the installation manual and the specified mounting direction.
Output classification	H-type SELV output; Class 2 power unit.
Applicable safety standards	UL 8750 Type HL and CSA C22.2 No. 250.13-12 apply to the standard version. ENEC BS EN/EN 61347-1 and 61347-2-13, BS EN/EN 62384, GB/T 19510.1 and 19510.213, EAC TP TC 004; IP67. AS/NZS IEC / AS/NZS standards are also listed in the 50 W safety table.
Emergency installation	EN/IEC 61347-2-13 (EL), Appendix J, independent control gear; emergency DC input 176–280 VDC. This is a separate application range within the general DC input rating.
RCM application	RCM is voluntary. Non-IC classification independent LED control gear is not suitable for residential installations.
Type HL application	Type HL use in Class I, Division 2 requires consideration of built-in installation. The driver is a component; suitability of the complete luminaire must be established.
Isolation tests	Withstand: input–output 3.75 kVAC, input–FG 2 kVAC, output–FG 1.5 kVAC. Insulation resistance at each pairing: 100 MΩ at 500 VDC, 25°C and 70% RH.
EMC emissions	BS EN/EN 55015 (CISPR 15), GB/T 17743; BS EN/EN 61000-3-2 and GB 17625.1, Class C at ≥50% load; BS EN/EN 61000-3-3.
EMC immunity	BS EN/EN 61547; 61000-4-2 ESD Level 3, 8 kV air / Level 2, 4 kV contact; 61000-4-3 radiated Level 3; 61000-4-4 EFT/burst Level 3; 61000-4-6 conducted Level 3; 61000-4-8 magnetic field Level 4.
Voltage dips / interruptions	BS EN/EN 61000-4-11: >95% dip for 0.5 periods; 30% dip for 25 periods; >95% interruptions for 250 periods.
System compliance and regional marks	Re-qualify EMC on the final installation. Products supplied in the Americas may omit CCC/PSE/BIS/KC logos; confirm the supplied label and required market certification.
ErP installation condition	Use this LED driver behind a switch; it must not remain permanently connected to the mains for the stated lighting-fixture ErP requirement.

Mechanical details and wiring

Dimensions / case	105 × 63 × 30 mm (L × W × H), case 268A, drawing tolerance ±1 mm.
Fixing and mounting	Four Ø4.5 mm holes; 99 mm longitudinal and 40 mm transverse fixing spacing; 90 mm inner reference dimension. Use the horizontal orientation shown in the mechanical drawing.
Case-temperature measuring point	Use the marked tc point, 61.3 mm from the drawing’s right-hand reference and 31.6 mm from its bottom reference.
Input cable	SJOW 17 AWG × 3C / H05RN-F 3 × 1.0 mm², 300 ±20 mm. AC/L brown, AC/N blue, protective earth/FG green-yellow.
Output cable	SJOW 17 AWG × 2C / H05RN-F 2 × 1.0 mm², 300 ±20 mm. V+ red and V− black.
DALI cable	UL 2517 20 AWG × 2C, 350 ±20 mm. DA+ purple, DA− pink.
Current adjustment access	Use the Io ADJ. potentiometer shown in the mechanical drawing. Drawing references for the adjustment point are 25.8 mm and 9.9 mm.
Unit weight	0.42 kg (420 g) per driver, taken directly from the packing specification.
Transport packing	24 pieces / 11 kg / 0.81 CUFT; carton data is separate from the unit weight.

Applications and selection

Typical applications	Street, architectural, bay and flood lighting, subject to exact load, installation and market-approval requirements.
Selection	Match the full SKU, output-current setting, LED voltage and total load to the permitted operating envelope. DALI dimming does not remove the input, thermal or power limits.
Measurement basis	Unless otherwise stated, specifications are measured at 230 VAC, rated current and 25°C ambient.
Model availability	Confirm this exact standard or India version and the required certification when ordering. Datasheet catalog stock notes are not live store inventory.

Installation manual requirements

Installation safety	Disconnect the mains supply and prevent accidental reconnection before installation or maintenance. Have faults examined by a qualified technician; do not open the power-supply case yourself.
Ventilation and mounting	Keep ventilation clear and do not stack objects on the unit. Keep 10–15 cm clearance when the adjacent device is a heat source. Follow this model’s mounting, ambient-temperature and output-derating requirements.
System wiring and protection	Use approved primary and secondary wiring rated for at least the applicable unit current. Connect the fitted PE/FG lead to protective earth according to the model wiring. Provide suitable system-level insulation and an enclosure around single-insulated wiring; verify EMC again in the completed system.
Environmental and load limits	Do not immerse the unit or install it near fire or above its specified ambient limit. Keep output current and power within the model’s rated operating envelope. If a fitted external flexible cable is damaged, replacement is limited to the manufacturer, its service agent or a similarly qualified person.
Connection seals and support	If waterproof connectors are fitted, secure their connections to prevent water entry. Verify the mounting structure and luminaire strength; use safety cables for bay-light applications.
Adjustable-unit weather protection	This IP67 model has a built-in output-current adjustment function. Install it indoors or in a location sheltered from rain outdoors, as required by the installation manual. IP67 does not permit immersion.
DALI-controller installation	Verify the compatibility and capacity of the DALI controller and network for the actual installed units. For standalone use with DALI conductors smaller than 18 AWG (0.75 mm²), use SELV controllers/networks; contact MEAN WELL for guidance before using FELV control. Follow this exact model’s DALI wiring.

Confirm the exact LED load, operating temperature, control interface and installation requirements against the linked datasheet and manual before commissioning.