Over 15 years experience of providing support of MEAN WELL Power Supplies
NSP-320-15
The NSP-320 is a 321W Mean Well power supply (input: 85~305VAC, operating temperature: -40~+85°C).
Key Features
- ✓ Input voltage: 85~305VAC
- ✓ Output voltage (max): 15V
- ✓ Rated output current: 21.4A
- ✓ Operating temperature: -40~+85°C
- ✓ Safety certifications: BSMI, CB, CCC, CE, EAC, RCM, TÜV, UL
- ✓ 5 year warranty
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BrandMean Well
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Input Voltage85V~305V
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Standards MetBSMI,CB,CCC,CE,EAC,RCM,TUV,UL
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Operation ModeConstant Voltage
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Operating Temperature-40°C~85°C
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Length7.05 in
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Width3.9 in
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Height1.18 in
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Weight1.48 lb
::specification::
Frequently Asked Questions
What applications is the Mean Well NSP-320-15 designed for?
The NSP-320-15 is built for multi-industry equipment that needs a regulated 15V DC supply at up to 21.4A. Typical use cases listed for this model family include industrial automation, mechanical equipment, medical devices, security systems, telecommunications equipment, PoE power sourcing, and charging systems. Its high-reliability design and broad safety approvals make it suitable for demanding commercial and industrial environments.
What are the key electrical specifications of the NSP-320-15?
This model is rated for 321W output and provides 15V DC at up to 21.4A. It accepts a universal 85-305VAC input range, or 120-431VDC, and includes active power factor correction. Efficiency is rated up to 93.5%, which helps reduce wasted energy and heat.
Can the NSP-320-15 handle harsh operating environments?
Yes. The unit is specified for operation from -40°C to +85°C, with derating required above +60°C. It also uses forced-air cooling with a built-in DC fan, includes conformal coating on the PCB, and supports high-altitude use up to 5000 meters under the stated overvoltage category limits.
Is the NSP-320-15 suitable for medical or safety-critical equipment?
This model family includes approvals to IEC/EN/UL 60601-1 with 2 x MOPP and is described as suitable for BF-rated medical applications. It also features low leakage current below 350 microamps and includes protections for short circuit, overload, overvoltage, and overtemperature. That combination makes it a strong fit where safety compliance and reliable operation matter.
What built-in control and monitoring features does the NSP-320-15 provide?
The NSP-320-15 includes remote ON/OFF control, remote sense with up to 0.3V compensation, and a DC OK signal for system monitoring. It also uses fan ON/OFF temperature control and constant current limiting. These features support more advanced equipment designs that need status visibility and tighter output control.
Why would I choose the NSP-320-15 instead of another output version in the NSP-320 series?
The NSP-320-15 is the right choice when your system specifically requires a 15V DC rail and up to 21.4A output. The NSP-320 series includes other voltage options, but this version matches applications that need higher current at 15V while keeping the same 320W-class, high-reliability platform. Choosing the correct voltage variant helps avoid unnecessary conversion stages in the end system.
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