Over 15 years experience of providing support of MEAN WELL Power Supplies
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Mean Well PM-20-3.3 Power Supply 20W 3.3V 4.5A
The PM-20 is a 20W Mean Well power converter (input range: 85~264VAC).
Key Features
- ✓ Input voltage range: 85~264VAC
- ✓ 4KVAC reinforced I/O isolation
- ✓ Protections: Overload / Over voltage
- ✓ Safety approvals: ISOLATION LEVEL SAFETY &
- ✓ 3 years warranty
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BrandMean Well
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SeriesPM Series
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Power Rating14.85 Watt
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Output Voltage3.3 Volt
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Rated Current4.5 Ampere
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Input Voltage85V~264V
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No of Output1
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Dimming ControlNone
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Standards MetCB,CE,EAC,TUV,UL
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Operation ModeConstant Voltage
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Operating Temperature-20°C~60°C
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Warranty3 Year
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Length3.7 in
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Width2.2 in
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Height0.89 in
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Weight0.4 lb
::specification::
Frequently Asked Questions
Can I use the PM-20-3.3 for a 3.3V industrial control board or embedded controller?
Yes, this model is a constant voltage 3.3V supply rated for 4.5A. With 14.85W output power, it fits 3.3V industrial control boards, embedded electronics, and automation logic that need a regulated 3.3V rail within that current range.
Is the PM-20-3.3 suitable for powering multiple 3.3V sensors or interface modules in one system?
It can be used where the combined 3.3V load stays within 4.5A and 14.85W. That makes it a practical option for grouped 3.3V sensors, interface cards, and low-voltage embedded modules that share a common constant voltage source.
Can this 3.3V power supply be used in automation cabinets with wide AC input ranges?
Yes, the input range is 85-264VAC, so it is suited to equipment that may be deployed across different AC supply conditions. Its constant voltage 3.3V output is intended for low-voltage automation and embedded loads rather than variable-output applications.
Is the PM-20-3.3 a good fit for low-voltage digital electronics that need more current than smaller 3.3V models?
Yes, within the PM series it is the highest-current 3.3V option listed at 4.5A. That gives it more headroom than the PM-05-3.3 at 1.25A, PM-10-3.3 at 2.5A, and PM-15-3.3 at 3.5A for 3.3V digital loads.
Can I use the PM-20-3.3 in hot or cold indoor equipment environments?
The specified operating temperature range is -20°C to +60°C. No IP rating is listed in the provided specs, so the product data supports temperature suitability but does not state suitability for outdoor exposure or washdown conditions.
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Other PM-20 Models
4 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well PM-20-12 Power Supply 20W 12V 1.8A | 21.6W | 12V | 1.8A | Indoor | $30.00 | View |
| Mean Well PM-20-15 On Board Switching Power Supply 1.4A | 21W | 15V | 1.4A | Indoor | $17.43 | View |
| Mean Well PM-20-5 Power Supply 20W 5V 4.4A | 22W | 5V | 4.4A | Indoor | $30.00 | View |
| Mean Well PM-20-24 Power Supply 20W 24V 920mA | 22.08W | 24V | 0.92A | Indoor | $30.00 | View |
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