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Mean Well NPF-40-42 Power Supply 40W 42V
The NPF-40 is a 40W Mean Well power converter (input range: 90~305VAC).
Key Features
- ✓ Input voltage range: 90~305VAC
- ✓ 3.75KVAC reinforced I/O isolation
- ✓ Protections: Short circuit / Over voltage / Over temperature
- ✓ Active PFC — meets international energy efficiency regulations
- ✓ Safety approvals: Note.8 SAFETY & EMC
- ✓ 3 years warranty
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BrandMean Well
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SeriesNPF Series
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Power Rating40.32 Watt
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Output Voltage42 Volt
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Rated Current0.96 Ampere
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Input Voltage90V~305V
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No of Output1
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Dimming ControlNone
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Standards MetCB,CCC,CE,EAC,ENEC,UL
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Operation ModeConstant Current,Constant 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
Is the NPF-40-42 rated for wet or outdoor use?
Yes. The NPF-40-42 is IP67 rated and operates from -40°C to +85°C. The 150.0 × 53.0 × 35.0 mm sealed plastic housing allows direct installation in outdoor compact luminaires, horticultural enclosures, and damp industrial applications.
What LED applications match the NPF-40-42's 42V 40W output?
The NPF-40-42 supplies 42V DC at 0.96A (40.32W) in constant-current mode with a CC range of 25–42V. It is appropriate for compact 42V LED modules used in small outdoor accent fixtures, shelf or display lighting with 42V LED arrays, and low-power industrial work lights that specify 42V constant-current drive.
How does the NPF-40-42 compare to the NPF-40-36 and NPF-40-48?
All three share IP67, the 150.0 × 53.0 × 35.0 mm housing, and 0.49 kg weight. NPF-40-36 is 36V/1.12A (40.32W, CC 21–36V); NPF-40-42 is 42V/0.96A (40.32W, CC 25–42V); NPF-40-48 is 48V/0.84A (40.32W, CC 28–48V). All are the same wattage; the choice is determined by the LED string's rated voltage.
Does the NPF-40-42 support universal input voltage?
Yes. The NPF-40-42 accepts 90–305VAC, so it operates on 120VAC North American, 230VAC European, or higher industrial mains voltages without any switching or external transformer. This wide range also provides resilience against mains voltage fluctuations.
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Other NPF-40 Models
4 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well NPF-40-54 Power Supply 40W 54V | 41.04W | 54V | 0.76A | IP67 | $28.04 | View |
| Mean Well NPF-40-48 Power Supply 40W 48V | 40.32W | 48V | 0.84A | IP67 | $27.13 | View |
| Mean Well NPF-40-36 Power Supply 40W 36V | 40.32W | 36V | 1.12A | IP67 | $28.04 | View |
| Mean Well NPF-40-30 Power Supply 40W 30V | 40.2W | 30V | 1.34A | IP67 | $28.04 | View |
