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Mean Well PWM-40-24 Power Supply 40W 24V - Dimmable 1.67A

PWM style outputfully isolated plastic caseIP67Class II design without FGbuilt-in 3 in 1 dimming

SKU PWM-40-24

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PWM-40-24

PWM-40-24 Fixed output In stock

PWM-60-24 Dimmable Low stock

PWM-60-24DA DALI Backorder

PWM-60-24DA2 DALI2 In stock

PWM-90-24 Dimmable In stock

PWM-90-24DA DALI Backorder

PWM-90-24DA2 DALI2 In stock

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The PWM-40 is a 40W Mean Well AC-DC constant voltage LED driver (input: 90~305VAC, output: 24V, operating temperature: -40~+85°C).

Key Features

✓ Input voltage: 90~305VAC
✓ Output voltage: 24V
✓ Rated output current: 1.67A
✓ 3-in-1 dimming (0–10V / PWM / resistance)
✓ Class II design — no earth connection required
✓ Ingress protection: IP67
✓ Operating temperature: -40~+85°C
✓ Safety certifications: CB, CCC, CE, EAC, ENEC, UL
✓ 5 year warranty

Frequently Asked Questions

Can the PWM-40-24 power 24V LED strips in an outdoor installation?

Yes. The PWM-40-24 carries an IP67 rating, making it suitable for outdoor and wet-location use where moisture exposure is expected. Its -40°C to +85°C operating range supports installation in most outdoor environments year-round.

How many meters of 24V LED strip can the PWM-40-24 support?

The PWM-40-24 supplies a maximum of 40W at 24V. Divide 40W by your strip's power consumption per meter — for example, a 14W/m strip allows approximately 2.8 meters. Always verify your strip's actual rated watts per meter before sizing the run.

Is the PWM-40-24 a good fit for dimmable 24V under-cabinet or display lighting?

Yes. The built-in 3-in-1 dimming supports 0–10V analog, PWM signal, and resistance control, allowing smooth brightness adjustment for 24V under-cabinet lighting and display case applications. The 40W output is adequate for short or medium strip runs in these settings.

Can I install the PWM-40-24 in a non-metallic or sealed junction box?

Yes. The Class II design without a functional earth ground (FG) connection and the fully isolated plastic case allow installation in non-metallic enclosures and sealed junction boxes without a grounding conductor.

Is the PWM-40-24 suitable for powering 24V LED architectural accent lighting on a building facade?

Yes. The IP67 waterproof rating and wide operating temperature range of -40°C to +85°C make the PWM-40-24 appropriate for facade-mounted 24V LED accent lighting exposed to rain and temperature extremes. Its 40W capacity can drive short runs of high-efficiency accent strip.

What dimming protocols does the PWM-40-24 support compared to the DA and KN variants?

The PWM-40-24 uses built-in 3-in-1 dimming (0–10V, PWM signal, and resistance). The DA suffix models add DALI protocol support, the DA2 suffix adds DALI-2 support, and the KN suffix adds KNX protocol support without requiring a separate KNX-DALI gateway. All variants in the 40W range share the same 40W output.

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Model	Power	Voltage	Current	IP Rating
Mean Well PWM-40-48 Power Supply 40W 48V - Dimmable 840mA	40W	48V	0.84A	IP67	View
Mean Well PWM-40-36 Power Supply 40W 36V - Dimmable 1.12A	40W	36V	1.12A	IP67	View
Mean Well PWM-40-12 Power Supply 40W 12V - Dimmable 3.34A	40W	12V	3.34A	IP67	View

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Key Features

✓ Input voltage: 90~305VAC

✓ Output voltage: 24V

✓ Rated output current: 1.67A

✓ 3-in-1 dimming (0–10V / PWM / resistance)

✓ Class II design — no earth connection required

✓ Ingress protection: IP67

✓ Operating temperature: -40~+85°C

✓ Safety certifications: CB, CCC, CE, EAC, ENEC, UL

✓ 5 year warranty

Mean Well PWM-40-24 Power Supply 40W 24V - Dimmable 1.67A

Select model — 7 in this family

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Mean Well PWM-40-24 Power Supply 40W 24V - Dimmable 1.67A

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