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Mean Well PWM-40-12 Power Supply 40W 12V - Dimmable
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Mean Well PWM-40-12 Power Supply 40W 12V - Dimmable
The PWM-40 is a 40W Mean Well DIN rail power converter with a 150mm profile (input range: 90~305VAC, operating temperature: -40~+80℃).
Key Features
- ✓ 150mm width — DIN rail TS-35 compatible
- ✓ Input voltage range: 90~305VAC
- ✓ 3.75KVAC reinforced I/O isolation
- ✓ Wide operating temperature: -40~+80℃
- ✓ Protections: Short circuit / Overload / Over voltage / Over temperature
- ✓ Active PFC — meets international energy efficiency regulations
- ✓ Safety approvals: Note.5 UL8750( type ”HL” ), CSA C22.2 No. 250.13-12; ENEC EN61347-1, EN61347-2-13 independent,EN62384, IP67
- ✓ 3 years warranty
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BrandMean Well
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SeriesPWM Series
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Power Rating40 Watt
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Output Voltage12 Volt
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Rated Current3.34 Ampere
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Input Voltage90V~305V
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No of Output1
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Dimming Control0-10V,10V PWM,Resistance
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Standards MetCB,CCC,CE,EAC,ENEC,UL
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Operation ModeConstant Voltage
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Operating Temperature-40°C~85°C
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Warranty5 Year
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Length5.91 in
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Width2.09 in
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Height1.38 in
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Weight1.08 lb
::specification::
Frequently Asked Questions
Can I use the PWM-40-12 to power 12V LED strip lighting outdoors?
Yes. The PWM-40-12 is rated IP67, meaning it is fully protected against dust and can withstand temporary immersion in water, making it suitable for outdoor and wet-location LED strip installations. Its operating range of -40°C to +85°C also covers most outdoor climates.
How much 12V LED strip can the PWM-40-12 drive?
The PWM-40-12 delivers a maximum of 40W at 12V. To find the maximum strip length, divide 40W by your strip's rated watts per meter — for example, a 10W/m strip allows up to 4 meters. Always check your specific strip's rated power per meter before finalizing the run length.
Is the PWM-40-12 suitable for dimmable LED sign or display lighting?
Yes. The PWM-40-12 features built-in 3-in-1 dimming, supporting 0–10V, PWM signal, and resistance dimming methods. This makes it well suited for dimmable 12V LED signage, channel letter lighting, and display case illumination.
Can I use the PWM-40-12 in an enclosed or weatherproof fixture?
Yes. The PWM-40-12 uses a fully isolated plastic case with a Class II design that requires no earth ground (FG), so it can be installed inside sealed or non-metallic enclosures. The IP67 housing also allows direct exposure to moisture without an additional enclosure.
Is the PWM-40-12 appropriate for powering 12V landscape or pathway lighting?
Yes. The IP67 rating and -40°C to +85°C operating temperature make the PWM-40-12 a practical choice for buried or surface-mounted 12V landscape and pathway lighting applications. Its 40W capacity can supply multiple low-wattage fixtures on a shared circuit.
How does the PWM-40-12 compare to other wattage options in the PWM series?
The PWM series is available at 40W, 60W, 90W, 120W, and 200W, with 12V, 24V, 36V, and 48V variants. The PWM-40-12 provides 3.34A at 12V; the PWM-60-12 provides 5A, the PWM-90-12 provides 7.5A, the PWM-120-12 provides 10A, and the PWM-200-12 provides 15A. Choose based on total load wattage.
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Other PWM-40 Models
3 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well PWM-40-24 Power Supply 40W 24V - Dimmable | 40W | 24V | 1.67A | IP67 | $28.40 | View |
| Mean Well PWM-40-48 Power Supply 40W 48V - Dimmable | 40W | 48V | 0.84A | IP67 | $30.15 | View |
| Mean Well PWM-40-36 Power Supply 40W 36V - Dimmable | 40W | 36V | 1.12A | IP67 | $30.15 | View |
