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Mean Well SD-50B-12 DC-DC Converter - 50W - 19~36V in 12V out 4.2A
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Mean Well SD-50B-12 DC-DC Converter - 50W - 19~36V in 12V out 4.2A
The SD-50B is a 504W Mean Well DC-DC converter (input: 19~36VDC, operating temperature: -10~+60°C).
Key Features
- ✓ Input voltage: 19~36VDC
- ✓ Output voltage (max): 12V
- ✓ Rated output current: 4.2A
- ✓ I/O isolation: 1500V
- ✓ Operating temperature: -10~+60°C
- ✓ Safety certifications: CE, EAC, RCM
- ✓ 2 year warranty
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BrandMean Well
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SeriesSD Series
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Power Rating504 Watt
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Output Voltage12 Volt
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Rated Current4.2 Ampere
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Input Voltage19V~36V
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No of Output1
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Dimming ControlNon Dimmable
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Standards MetCE,EAC,RCM
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Operation ModeConstant Voltage
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Operating Temperature-10°C~60°C
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Warranty2 Year
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Length6.26 in
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Width3.82 in
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Height1.5 in
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Weight1.06 lb
::specification::
Frequently Asked Questions
Can I use the SD-50B-12 for a 12V PLC or industrial controller that runs from a 19-36V source?
Yes, this converter provides a 12V constant-voltage output and is rated for 4.2A. It is designed for systems with a 19-36V input range that need regulated 12V power.
Is the SD-50B-12 suitable for 12V automation relays, HMIs, or panel accessories?
It can be used for 12V control and automation loads that require constant voltage and stay within the 4.2A output rating. The listed input range is 19-36V, so it is matched to equipment powered from that source window.
Can this model power embedded 12V electronics inside industrial equipment?
It is a fit for embedded or industrial electronics that need regulated 12V output up to 4.2A. The converter's constant-voltage mode and 19-36V input range are the key selection points for that use.
Is the SD-50B-12 suitable for outdoor enclosures?
The specs define an operating temperature range of -10C to +60C, but they do not list an IP rating. Based on the provided data, temperature capability is stated while outdoor or weather-exposed use is not specified.
What is the difference between SD-50A-12, SD-50B-12, and SD-50C-12?
All three models provide 12V output at 4.2A. The difference is the input range: SD-50A-12 is 9-18V, SD-50B-12 is 19-36V, and SD-50C-12 is 36-72V.
Payment & Security
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Other SD-50B Models
2 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well SD-50B-5 DC-DC Converter - 50W - 19~36V in 5V out 10A | 504W | 5V | 10A | Indoor | $31.00 | View |
| Mean Well SD-50B-24 DC-DC Converter - 50W - 19~36V in 24V out 2.1A | 504W | 24V | 2.1A | Indoor | $31.06 | 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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