Mean Well ELG-240-42AB Power Supply 240W 42V - Adjustable and Dimmable | ELG Series LED Driver - US Stock Available

Name: Mean Well ELG-240-42AB Power Supply 240W 42V - Adjustable and Dimmable 5.71A
Brand: Mean Well
SKU: ELG-240-42AB
Price: 62.23 USD
Availability: InStock

Overview

ELG-240-42AB is the 42V output model of this series: rated current 5.71A, typical efficiency 92.5%.

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-240-42ABSpecifications from the official datasheet (2026-07-06 edition)

OUTPUT

DC VOLTAGE: 42V
CONSTANT CURRENT REGION^Note.2: 21 ~ 42V
RATED CURRENT: 5.71A
RATED POWER 200VAC ~ 305VAC: 239.82W
RATED POWER 100VAC ~ 180VAC: 179.76W
RIPPLE & NOISE (max.)^Note.3: 250mVp-p
VOLTAGE ADJ. RANGE: Adjustable for A/AB-Type only (via built-in potentiometer) 39 ~ 45V
CURRENT ADJ. RANGE: Adjustable for A/AB-Type only (via built-in potentiometer) 2.86 ~ 5.71A
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.): 92.5%
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: 47 ~ 54V 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-240-42AB Block Diagram — Block Diagram

ELG-240-42AB DIMMING OPERATION — DIMMING OPERATION

ELG-240-42AB OUTPUT LOAD vs TEMPERATURE(Note.10) — OUTPUT LOAD vs TEMPERATURE(Note.10)

ELG-240-42AB STATIC CHARACTERISTIC — STATIC CHARACTERISTIC

ELG-240-42AB TOTAL HARMONIC DISTORTION — TOTAL HARMONIC DISTORTION

ELG-240-42AB MECHANICAL SPECIFICATION — MECHANICAL SPECIFICATION

ELG-240-42AB Dimensions (mm) — Dimensions (mm)

ELG-240-42AB ※ 3Y Model (3-wire input) — ※ 3Y Model (3-wire input)

ELG-240-42AB 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-240-42AB datasheetELG-240-SPEC.PDF · 2026-07-06 edition PDF Download

Certificates4

CB Certificate (ELG-240)(EN) PDF Download

UL Certificate (ELG-240)(EN) PDF Download

EMC Certificate (ELG-240)(EN) PDF Download

ENEC Certificate (ELG-240)(EN) PDF Download

Test reports1

Test Report (ELG-240-42)(EN) PDF Download

Catalogues1

Mean Well LED Driver Catalog PDF Download

FAQ

What is the IP rating of the ELG-240-42AB, and can it handle outdoor conditions?

The datasheet rates the ELG-240 series IP65 or IP67, protecting it against dust and water jets. It is appropriate for outdoor sign cabinets and weatherproof enclosures exposed to rain splash, though it should not be submerged.

How many meters of 42V LED strip can the ELG-240-42AB power?

The ELG-240-42AB delivers 239.82W at 42V on 200–305VAC input (179.76W on 100–180VAC). For a 12 W/m strip that equals approximately 20 m (239.82 ÷ 12). Check your specific strip's rated wattage per meter; leaving about 20% headroom is a sensible margin.

Can the ELG-240-42AB be used for dimmable LED cove or valance lighting in high-end residential projects?

Yes. The AB suffix provides both potentiometer-adjustable output and 3-in-1 dimming (0–10V, PWM, resistance), allowing integration with residential lighting control systems. At 239.82W and 42V, this driver supports substantial cove or valance LED strip runs with the flexibility to fine-tune brightness and voltage.

Is the ELG-240-42AB suitable for retail display cases or showcase lighting using 42V LED strips?

Yes. The dimming capability (AB suffix) allows brightness to be adjusted for different merchandise presentations, and the 239.82W capacity at 42V can drive extended runs of LED strips across multiple display case sections from a single driver.

Can this driver supply 42V LED modules in outdoor entertainment or event lighting?

Yes. The IP65/IP67 protection and 239.82W output make the ELG-240-42AB practical for temporary or permanent outdoor event lighting using 42V LED bars or wash fixtures. The wide 100–305VAC input accommodates different site mains supplies, from 120V up to 277V.

Does the ELG-240-42AB support both analog dimming and output voltage trim?

Yes. The AB designation indicates the driver includes a built-in potentiometer for output voltage (39–45V) and current (2.86–5.71A) adjustment, and separate DIM+/DIM- leads for 0–10V, PWM or resistance dimming. Both features can be used independently or together depending on the application.

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Mean Well ELG-240-42AB Power Supply 240W 42V - Adjustable and Dimmable 5.71A

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Overview

Features

Specifications

OUTPUT

INPUT

PROTECTION

ENVIRONMENT

SAFETY & EMC

OTHERS

Certifications & ratings

Technical drawings

Typical applications

Downloads

Datasheet1

Certificates4

Test reports1

Catalogues1

FAQ

Payment & Security

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Mean Well ELG-240-42AB Power Supply 240W 42V - Adjustable and Dimmable 5.71A

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