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Mean Well ELG-240-42B Power Supply 240W 42V - Dimmable
The ELG-240 is a 240W Mean Well power converter (input range: 100~305VAC).
Key Features
- ✓ Input voltage range: 100~305VAC
- ✓ DC output voltage adjustable ±10%
- ✓ 3.75KVAC reinforced I/O isolation
- ✓ Protections: Short circuit / Over voltage / Over temperature
- ✓ Active PFC — meets international energy efficiency regulations
- ✓ Safety approvals: (type”HL”), CSA C22.2 No. 250.13-12;IEC/EN/AS/NZS 61347-1, IEC/EN/AS/NZS 61347-2-13 UL8750 EAC TP TC 004;BIS IS15885(for 24/24B/36/36A/42/42A/48/48A/54/54A only) GB19510.14,GB19510.1; IP65 or IP67; KC61347 1 KC61347 2 13
- ✓ 3 years warranty
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BrandMean Well
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SeriesELG Series
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Power Rating239.82 Watt
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Output Voltage42 Volt
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Rated Current5.71 Ampere
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Input Voltage100V~305V
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No of Output1
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Dimming Control0-10V,10V PWM,Resistance
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Standards MetBSI,CB,CCC,CE,EAC,ENEC,KC,RCM,UL
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Operation ModeConstant Current,Constant Voltage
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Operating Temperature-40°C~90°C
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Warranty5 Year
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Length9.61 in
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Width2.8 in
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Height1.48 in
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Weight2.69 lb
::specification::
Frequently Asked Questions
Can I use the ELG-240-42B to power a large 42V LED strip installation outdoors?
Yes. The ELG-240-42B delivers 239.82W at 42V and carries an IP67 waterproof rating, making it suitable for outdoor and exposed installations. It operates across -40°C to +90°C, so it handles both cold and hot outdoor environments reliably.
Is the ELG-240-42B appropriate for illuminated outdoor signage?
Yes. The IP67 rating protects against water ingress from rain and washdown, and the metal case dissipates heat effectively in enclosures. With 239.82W available at 42V, it can drive the LED modules used in medium-to-large sign cabinets.
How much 42V LED strip can the ELG-240-42B drive?
The driver provides a maximum of 239.82W. If your 42V LED strip is rated at, say, 14W per meter, that supports approximately 17 meters (239.82 ÷ 14 ≈ 17.1 m). Always check your strip's rated power per meter and derate to about 80% of the driver's capacity for a safe continuous load, which gives roughly 13–14 meters at that density.
What dimming method does the ELG-240-42B support?
The 'B' suffix on the ELG-240-42B indicates built-in 3-in-1 dimming: 0–10V, PWM signal, and resistance dimming are all supported via the dimming input connector. This makes it compatible with most standard 0–10V wall dimmers and building automation systems.
Can the ELG-240-42B be installed in a wet or damp location such as a covered outdoor patio?
Yes. The IP67 rating means the unit is dust-tight and can withstand temporary immersion in water, which more than covers damp or rain-exposed locations. Operating temperature extends down to -40°C, so cold-climate outdoor mounting is also acceptable.
How does the ELG-240-42B compare to other ELG-240 42V variants like the ELG-240-42 and ELG-240-42A?
All three share the same 239.82W output at 42V with a 5.71A current limit and IP67 enclosure. The base ELG-240-42 has no built-in dimming; the ELG-240-42A adds output voltage and current adjustment via potentiometers (type A); the ELG-240-42B adds 3-in-1 dimming (0–10V, PWM, resistance) without on-board trimmers.
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Other ELG-240 Models
5 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well ELG-240-24DA Power Supply 240W 24V - DALI | 240W | 24V | 10A | IP67 | $61.09 | View |
| Mean Well ELG-240-36A Power Supply 240W 36V - Adjustable | 239.76W | 36V | 6.66A | IP65 | $52.87 | View |
| Mean Well ELG-240-48A-3Y AC-DC Single output LED Driver Mix Mode (CV+CC) with PFC | — | — | — | IP65 | $49.17 | View |
| Mean Well ELG-240-48DA-3Y Power Supply 240W 48V 3-wire Input - DALI | 240W | 48V | 5A | IP67 | $59.32 | View |
| Mean Well ELG-240-24-3Y AC-DC Single output LED Driver Mix Mode (CV+CC) with PFC | 240W | 24V | 10A | IP67 | $69.96 | View |
