Name: MEAN WELL XLG-20 series: 3-in-1 dimmable constant-current LED driver - XLG-20-M-B
Brand: MEAN WELL
SKU: XLG-20-M-B
Price: 39.43 USD
Availability: InStock

MEAN WELL XLG-20 series: 3-in-1 dimmable constant-current LED driver - XLG-20-M-B

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Description

XLG-20-M-B LED driver

MEAN WELL XLG-20-M-B is an IP67 metal-housed 3-in-1 dimmable constant-current LED driver, rated 21 W with a default output current of 500 mA and a 25.2–42 V constant-current region. Match the LED load to the exact model and operating limits.

Download MEAN WELL XLG-20 Datasheet (PDF)Download MEAN WELL LED Installation Manual

XLG catalog, PDF pages 1–7; XLG-20 specification dated 2026-02-04. Use the exact output and function suffix when selecting the driver.

Output and selection

Model and function	M identifies the specified output range; B adds isolated 3-in-1 dimming to the fixed rated current.
Rated output power	21 W. Apply the published thermal limits.
Output current	500 mA default. Fixed rated output current.
Constant-current voltage region	25.2–42 V. Use a compatible LED string within this range.
Open-circuit voltage	50 V maximum.
Current accuracy and ripple	Current tolerance ±8.0%; line regulation <±3%. Output current ripple <20%, measured at 230 VAC, full load and 25°C ambient.
Startup	Setup 500 ms; rise 150 ms at 115 VAC / 230 VAC. Setup is measured at first cold start; repeated switching can increase it.

Input and performance

Input supply	90–305 VAC. AC frequency 47–63 Hz. Active PFC.
Input derating	The 60 Hz static curve shows full load from 90 to 305 VAC; thermal limits still apply.
Power factor	At full load: PF ≥0.97 at 115 VAC, ≥0.95 at 230 VAC and ≥0.91 at 277 VAC.
Total harmonic distortion	THD <20% at load ≥50% for 115/230 VAC, or load ≥75% for 277 VAC.
Input current	0.3 A / 115 VAC; 0.2 A / 230 VAC; 0.2 A / 277 VAC.
Inrush current	Typical cold start 5 A at 230 VAC; width 350 µs at 50% peak, per NEMA 410.
16 A circuit breaker loading	42 units on type B and 42 on type C at 230 VAC, as listed in this datasheet.
Leakage current	<0.75 mA at 277 VAC.
Typical efficiency	88.5% at the specification reference conditions: 230 VAC input, rated current and 25°C ambient.
No-load consumption	<0.5 W.

Protection

Short-circuit protection	Hiccup operation; automatically recovers after the fault is removed.

Operating conditions

Case temperature	Tcase −40 to +80°C; maximum case temperature +80°C. Case temperature and ambient temperature are different limits.
Ambient derating	Horizontal mounting: full load through 60°C ambient, reducing to 60% at 70°C. The cold region from −40 to −25°C is marked for 230 VAC input only. Keep the case within its stated limit.
Cooling and altitude	Natural air convection. Above 2000 m altitude, reduce permitted ambient temperature by 3.5°C per additional 1000 m for this fanless model.
Humidity and storage	Working humidity 20–95% RH non-condensing. Storage temperature −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 along each X, Y and Z axis.
Lifetime and warranty	Catalog typical life expectancy >50,000 hours with the marked tc point about 80°C or lower. Five-year manufacturer warranty, subject to its warranty terms. Lifetime decreases as case temperature increases.
Reliability	5721.2 K hours minimum by Telcordia SR-332; 747.1 K hours minimum by MIL-HDBK-217F at 25°C. MTBF is not a service-life guarantee.

Control and adjustment

Dimming interface	B type: isolated 3-in-1 current dimming between DIM+ (purple) and DIM− (pink). Use 1–10 VDC, a 10 V PWM signal at 100 Hz–3 kHz, or an external resistance. Typical dimming-source current 103 µA.
Dimming limits	Minimum dimming level approximately 3%; current is undefined between 0% and 3%. The B-type sheet does not promise dim-to-off operation.
Dimming connection	Do not connect DIM− to V−. Direct connection to the LEDs is suggested; this dimming arrangement is not suitable for an additional downstream driver.
Synchronized resistance dimming	The plotted resistance scale is 10 kΩ/N through 100 kΩ/N, where N is the number of drivers in synchronized dimming. The control source must support the combined dimming-source current and the required insulation.

Safety and EMC

Construction and classification	Metal housing, IP67, active PFC and catalog Class 2 power-unit design. XLG-20 input is identified as Class I in the feature specification; connect its protective-earth lead.
Applicable safety standards	UL8750 (Type HL); CSA C22.2 No.250.13-12. ENEC AS/NZS IEC / BS EN/EN61347-1 and BS EN/EN61347-2-13 independent; BS EN/EN62384; GB/T19510.1 and GB/T19510.213; J61347-1(H29) and J61347-2-13(H29); EAC TP TC 004; KC61347-1 and KC61347-2-13. IS 15885 (Part 2/Sec 13) is also listed.
Certification applicability	Check the exact product markings and destination requirements. Units sourced from the Americas may not carry CCC, PSE, BIS or KC logos.
Electrical insulation	Withstand: input–output 3.75 kVAC; input–FG 2.0 kVAC; output–FG 1.5 kVAC. Insulation resistance for these pairs: 100 MΩ at 500 VDC, 25°C and 70% RH.
EMC emissions	Conducted/radiated: BS EN/EN55015 (CISPR15), GB/T17743, J55015(H29). Harmonic current: BS EN/EN61000-3-2 and GB17625.1, Class C at load ≥50%; flicker: BS EN/EN61000-3-3.
EMC immunity	BS EN/EN61547. ESD Level 3, 8 kV air and Level 2, 4 kV contact; radiated/EFT/conducted Level 3; magnetic field Level 4. Surge 2 kV line-to-line, 4 kV line-to-earth. Test series BS EN/EN61000-4-2, -3, -4, -5, -6 and -8.
Voltage dips and interruptions	BS EN/EN61000-4-11: >95% dip for 0.5 periods; 30% dip for 25 periods; >95% interruptions for 250 periods.
Final-equipment compliance	Requalify EMC on the complete installation. For the catalog ErP lighting-fixture condition, install behind a switch rather than permanently connecting to the mains.
Type HL application	The catalog identifies Type HL for Class I, Division 2 hazardous (classified) locations; final equipment and installation must meet the applicable requirements.

Dimensions and installation

Size and mounting	95 × 63 × 30 mm (L × W × H), case 288A; drawing tolerance ±1 mm. Four Ø4.5 mm mounting holes with 89 mm longitudinal spacing and 40 mm transverse spacing. Recommended mounting is horizontal on a flat surface.
Power leads	AC/L brown, AC/N blue, earth green/yellow; output V+ red and V− black. Input cable: SJOW 17 AWG × 3 cores / H05RN-F 3 × 1.0 mm²; output: SJOW 17 AWG × 2 cores / 1.0 mm². AC and output lead lengths 150±10 mm.
Dimming cable	UL2517 20 AWG × 2 cores; 200±10 mm. DIM+ purple and DIM− pink.
Case-temperature measurement	Use the tc point marked in the mechanical drawing. Its location is dimensioned 61.3 mm and 31.6 mm from the shown drawing references; do not substitute ambient temperature for tc.
Catalog packing reference per unit	0.35 kg = 350 g for this B type. This is the catalog per-unit packing reference, not a measured net weight or an entire shipping-carton weight.
Accessories and selection	Select installation hardware and any dimming controller for the actual model, load and environment. The inspected series sheets do not specify a dedicated MEAN WELL accessory order code for this model. IP67 is subject to the installation instructions and does not authorize immersion.

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. Provide suitable system-level insulation and an enclosure around single-insulated wiring; verify EMC again in the completed system. Connect a fitted FG lead to protective earth according to the model wiring; the manual exempts only units marked Class II and ungrounded.
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.
Dimming-controller installation	Verify that the controller can drive the actual interface and number of units. For standalone use with dimming 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 dimming method and wiring.

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