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Mean Well SD-350D-12 DC-DC Converter - 330W - 72~144V in 12V out 29.2A
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Mean Well SD-350D-12 DC-DC Converter - 330W - 72~144V in 12V out 29.2A
The SD-350D is a 350.4W Mean Well DC-DC converter (input: 72~144VAC, operating temperature: -20~+60°C).
Key Features
- ✓ Input voltage: 72~144VAC
- ✓ Output voltage (max): 12V
- ✓ Rated output current: 29.2A
- ✓ I/O isolation: 1500V
- ✓ Operating temperature: -20~+60°C
- ✓ Safety certifications: CB, CE, EAC
- ✓ 3 year warranty
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BrandMean Well
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SeriesSD Series
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Power Rating350.4 Watt
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Output Voltage12 Volt
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Rated Current29.2 Ampere
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Input Voltage72V~144V
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No of Output1
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Dimming ControlNon Dimmable
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Standards MetCB,CE,EAC
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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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Length8.46 in
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Width4.53 in
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Height1.97 in
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Weight2.43 lb
::specification::
Frequently Asked Questions
Can I use the SD-350D-12 to step down a 72-144V source for 12V industrial controls?
Yes, this converter is built for a 72-144V input range and provides a constant 12V output. Its output rating is 29.2A and 350.4W, so it fits 12V control loads within those limits.
Is the SD-350D-12 suitable for 12V relays, fans, and auxiliary electronics in higher-voltage equipment?
It is a practical fit for 12V auxiliary loads when the source is within 72-144V and the load requires regulated 12V power. Total output must remain at or below 29.2A and 350.4W.
Can this model power several 12V embedded subsystems from one higher-voltage DC bus?
Yes, it can supply multiple 12V subsystems from a 72-144V input as long as the combined draw does not exceed 29.2A. The converter operates in constant-voltage mode, so it is intended for 12V equipment that expects a fixed-voltage supply.
Is the SD-350D-12 rated for harsh indoor environments or outdoor exposure?
The published operating temperature range is -20°C to +60°C, so that is the stated thermal envelope. No IP rating is listed, which means environmental sealing is not defined in these specs and exposed outdoor use is not confirmed.
How does the SD-350D-12 differ from the other SD-350D versions?
The listed SD-350D models are SD-350D-12 at 350.4W, 12V, 29.2A; SD-350D-24 at 350.4W, 24V, 14.6A; SD-350D-48 at 350.4W, 48V, 7.3A; and SD-350D-5 at 300W, 5V, 60A. This version is the 12V model and has the highest output current among the 12V, 24V, and 48V variants shown.
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Other SD-350D Models
3 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well SD-350D-5 DC-DC Converter - 280W - 72~144V in 5V out 60A | 300W | 5V | 60A | Indoor | $102.42 | View |
| Mean Well SD-350D-48 DC-DC Converter - 350W - 72~144V in 48V out 7.3A | 350.4W | 48V | 7.3A | Indoor | $102.42 | View |
| Mean Well SD-350D-24 DC-DC Converter - 350W - 72~144V in 24V out 14.6A | 350.4W | 24V | 14.6A | Indoor | $102.42 | View |
Customer reviews
Reviewed by 1 customer across the SD series
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Not shipped.
Model: SD-50C-12Quantity: 1I was notified it was shipped the next day of ordering. Tracking shows no progress beyond label being created. I expected reasonable shipping time coming from Massachussetts. Maybe the seller neglects to give that information that it may be shipped from China. Don't be mislead!
Response from Power Supply Mall|2026-08-14Thank you for your feedback. Your order of 1 unit of the SD-50C-12 placed on August 3rd shipped via FedEx, tracking 383002421062, and was delivered to your location on August 13th. The delivery took 8 business days, which is longer than our typical timeframe. This model is less commonly stocked, so we had to arrange it from another warehouse. Most of our power supplies ship from our main location, but this particular model required sourcing from an alternate facility.
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