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Mean Well ELG-240-48DA-3Y Power Supply 240W 48V - DALI 5A — 3-Wire Input (with Earth)

Name: Mean Well ELG-240-48DA-3Y Power Supply 240W 48V - DALI 5A — 3-Wire Input (with Earth)
Brand: Mean Well
SKU: ELG-240-48DA-3Y
Price: 59.32 USD
Availability: InStock

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Overview

ELG-240-48DA-3Y is the 48V output model of this series: rated current 5.0A, typical efficiency 93%.

ELG-240 series is a 240W AC/DC LED driver featuring the dual mode constant voltage and constant current output. ELG-240 operates from 100～305VAC and offers models with different rated voltage ranging between 24V and 54V. Thanks to the high efficiency up to 93%, with the fanless design, the entire series is able to operate for -40℃ ~ +90℃ case temperature under free air convection. The design of metal housing and IP67/IP65 ingress protection level allows this series to fit both indoor and outdoor applications. ELG-240 is equipped with various function options, such as dimming methodologies, so as to provide the optimal design flexibility for LED lighting system

Features

Constant Voltage + Constant Current mode output
Metal housing design with functional Ground
Built-in active PFC function
No load / Standby power consumption <0.5W
IP67 / IP65 rating for indoor or outdoor installations
Function options: output adjustable via potentiometer; 3 in 1 dimming (dim-to-off) ; Smart timer dimming; DALI
Typical lifetime>50000 hours
5 years warranty

Specifications

ELG-240-48DA-3YSpecifications from the official datasheet (2026-07-06 edition)

OUTPUT

DC VOLTAGE: 48V
CONSTANT CURRENT REGION^Note.2: 24 ~ 48V
RATED CURRENT: 5.0A
RATED POWER 200VAC ~ 305VAC: 240W
RATED POWER 100VAC ~ 180VAC: 180W
RIPPLE & NOISE (max.)^Note.3: 250mVp-p
VOLTAGE ADJ. RANGE: Adjustable for A/AB-Type only (via built-in potentiometer) 44.8 ~ 51.2V
CURRENT ADJ. RANGE: Adjustable for A/AB-Type only (via built-in potentiometer) 2.5 ~ 5A
VOLTAGE TOLERANCE^Note.4: ±2.0%
LINE REGULATION: ±0.5%
LOAD REGULATION: ±0.5%
SETUP, RISE TIME^Note.6: 500ms, 100ms/230VAC, 1000ms, 100ms/115VAC
HOLD UP TIME (Typ.): 10ms/ 230VAC 10ms/ 115VAC

INPUT

VOLTAGE RANGE^Note.5: 100 ~ 305VAC 142 ~ 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< 20%(@load≧50%/115VC,230VAC; @load≧75%/277VAC) (Please refer to “TOTAL HARMONIC DISTORTION(THD)” section)
EFFICIENCY (Typ.): 93%
AC CURRENT: 2.2A / 115VAC 1.5A / 230VAC 1.2A/277VAC
INRUSH CURRENT(Typ.): COLD START 60A(twidth=510μs measured at 50% Ipeak) at 230VAC; Per NEMA 410
MAX. No. of PSUs on 16A CIRCUIT BREAKER: 4 units (circuit breaker of type B) / 6 units (circuit breaker of type C) at 230VAC
LEAKAGE CURRENT: <0.75mA / 277VAC
NO LOAD / STANDBY POWER CONSUMPTION^Note.7: No load power consumption <0.5W for Blank / A -Type Standby power consumption <0.5W for B / AB / DA-Type

PROTECTION

OVER CURRENT: 95 ~ 108% Constant current limiting, recovers automatically after fault condition is removed
SHORT CIRCUIT: Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 54 ~ 63V Shut down output voltage, re-power on to recover
OVER TEMPERATURE: Shut down output voltage, re-power on to recover

ENVIRONMENT

WORKING TEMP.: Tcase=-40 ~ +90℃ (Please refer to “ OUTPUT LOAD vs TEMPERATURE” section)
MAX. CASE TEMP.: Tcase=+90℃
WORKING HUMIDITY: 20 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY: -40 ~ +90℃, 10 ~ 95% RH
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;IEC/BS EN/EN/AS/NZS 61347-1, IEC/BS EN/EN/AS/NZS 61347-2-13 independent, BS EN/EN62384; EAC TP TC 004;BIS IS15885(for 24/24A/24B/24DA/36/36A/36B/42/42A/42B/48/48A/48B/54/54A/54ADA/54B only); GB/T19510.1,GB/T19510.213; IP65 or IP67;KC61347-1,KC61347-2-13 approved
DALI STANDARDS: Compliance to IEC62386-101,102,(207 by request) for DA Type only
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: Compliance to BS EN/EN55015,BS EN/EN61000-3-2 Class C (@load≧50%) ; BS EN/EN61000-3-3; GB/T 17743, GB17625.1;EAC TP TC 020; KC KN15,KN61547
EMC IMMUNITY: Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11; BS EN/EN61547, light industry level (surge immunity Line-Earth 6KV, Line-Line 4KV);EAC TP TC 02; KC KN15,KN61547

OTHERS

MTBF: 2391.4K hrs min. Telcordia SR-332 (Bellcore) ; 190.7K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 244*71*37.5mm (L*W*H)
PACKING: 1.22Kg; 12pcs / 15.2Kg / 0.72CUFT

Certifications & ratings

Type: HL

Test conditions and notes14

1. All parameters NOT specially mentioned are measured at 230VAC input, rated current and 25℃ of ambient temperature.
2. Please refer to "DRIVING METHODS OF LED MODULE".
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. De-rating may be needed under low input voltages. Please refer to “STATIC CHARACTERISTIC” sections for details.
6. 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.
7. No load/standby power consumption is specified for 230VAC input.
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. This series meets the typical life expectancy of >50,000 hours of operation when Tcase, particularly tc point (or TMP, per DLC), is about 70℃ or less.
10. Please refer to the warranty statement on MEAN WELL's website at http://www.meanwell.com
11. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).
12. For any application note and IP water proof function installation caution, please refer our user manual before using. https://www.meanwell.com/Upload/PDF/LED_EN.pdf
13. To fulfill requirements of the latest ErP regulation for lighting fixtures, this LED power supply can only be used behind a switch without permanently connected to the mains.
14. For A/AB type need to consider build in using to comply with Type HL application.

Technical drawings

ELG-240-48DA-3Y Block Diagram — Block Diagram

ELG-240-48DA-3Y DIMMING OPERATION — DIMMING OPERATION

ELG-240-48DA-3Y OUTPUT LOAD vs TEMPERATURE(Note.10) — OUTPUT LOAD vs TEMPERATURE(Note.10)

ELG-240-48DA-3Y STATIC CHARACTERISTIC — STATIC CHARACTERISTIC

ELG-240-48DA-3Y TOTAL HARMONIC DISTORTION — TOTAL HARMONIC DISTORTION

ELG-240-48DA-3Y MECHANICAL SPECIFICATION — MECHANICAL SPECIFICATION

ELG-240-48DA-3Y Dimensions (mm) — Dimensions (mm)

ELG-240-48DA-3Y ※ B/DA-Type — ※ B/DA-Type

ELG-240-48DA-3Y ※ 3Y Model (3-wire input) — ※ 3Y Model (3-wire input)

ELG-240-48DA-3Y 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

ELG-240-48DA-3Y datasheetELG_240_Spec_sheet.pdf · 2026-07-06 edition PDF Download

FAQ

What does the 3Y suffix mean on the ELG-240-48DA-3Y?

The 3Y suffix indicates the 3-wire input version: its input cable has AC/L (brown), AC/N (blue) and PE (green/yellow) wires. This is relevant for installations where the driver case should be connected to protective earth, which the datasheet recommends for complete EMC performance and safe use.

Does the ELG-240-48DA-3Y support DALI dimming?

Yes. The DA portion of the SKU indicates DALI dimming support, allowing the driver to be addressed and dimmed through a DALI bus. This is useful for smart building projects, office lighting systems, and any installation requiring networked dimming control.

Is the ELG-240-48DA-3Y rated for outdoor use?

Yes. The ELG-240 series is rated IP65 or IP67, meaning the enclosure is dust-tight and water-resistant, making it suitable for outdoor LED architectural lighting, signage enclosures, and installations exposed to rain.

How many meters of 48V LED strip can the ELG-240-48DA-3Y power?

With 240W output at 48V on 200–305VAC input (180W on 100–180VAC), this driver supports up to 240W of LED load. At a strip density of 20W per meter, that is 12 meters; at 16W per meter it is 15 meters. Always verify the strip's per-meter wattage and do not exceed the rating for your input voltage.

Can the ELG-240-48DA-3Y be used in commercial office LED lighting systems with a building automation controller?

Yes. DALI compatibility and a three-wire input make this driver well suited for commercial office LED luminaires connected to DALI-enabled building automation or energy management systems. The 240W capacity at 48V can drive substantial LED loads from a single driver.

What operating temperature range does the ELG-240-48DA-3Y support?

The driver is specified for a case temperature (Tcase) of -40°C to +90°C, with a maximum ambient of 60°C at rated current in constant-current mode. This covers cold outdoor environments as well as warm enclosed fixture housings, provided the case stays within its limit.

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