Over 15 years experience of providing support of MEAN WELL Power Supplies
NSP-320-48
The MEAN WELL NSP-320 series is a 320W high-reliability AC/DC enclosed power supply designed for multi-industry applications including industrial automation, mechanical equipment, medical devices, security systems, telecommunications, and PoE power sourcing. With a universal 85–305VAC input and built-in active PFC, it delivers up to 93.5% efficiency and extremely low no-load power consumption for enhanced energy savings. The compact 179×99×30 mm design incorporates forced-air cooling with a DC fan, enabling stable performance across a wide operating temperature range from –40°C to +85°C. Featuring 200% peak power capability, constant current limiting, remote ON/OFF control, remote sense, DC OK signal, and fan ON/OFF temperature control, the NSP-320 series ensures dependable performance in demanding environments. It meets a broad range of global safety standards, including IEC/EN/UL 62368-1, 60601-1 (2×MOPP), 60335-1, 61010-1, and 62477-1, making it suitable for BF-rated medical applications and high-altitude installations up to 5000 meters.
Key Features
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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 is the output rating of the Mean Well NSP-320-48?
The NSP-320-48 is a 48V enclosed AC/DC power supply rated for 6.7A output current. Its nominal power rating is 321.6W, making it suitable for higher-demand industrial and commercial systems that require a regulated 48V DC supply.
What types of applications is the NSP-320-48 designed for?
This model is designed for multi-industry use, including industrial automation, mechanical equipment, medical devices, security systems, telecommunications, PoE power sourcing, and charging systems. Its high-reliability design and broad safety coverage make it suitable for demanding professional environments.
Can the NSP-320-48 operate in harsh temperature conditions?
Yes. The NSP-320-48 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 and fan temperature control to support stable performance across a wide operating range.
What makes the NSP-320-48 a high-reliability power supply?
The unit combines high efficiency up to 93.5%, active power factor correction, conformal coating, and multiple built-in protections including short circuit, overload, overvoltage, and overtemperature protection. It also includes remote ON/OFF, remote sense, and a DC OK signal for better system monitoring in critical applications.
Is the NSP-320-48 suitable for medical or safety-sensitive equipment?
Yes, this series is certified to IEC/EN/UL 60601-1 and supports 2xMOPP with leakage current below 350uA, which makes it appropriate for BF-rated medical applications. It is also certified to additional standards such as IEC/EN/UL 62368-1, 60335-1, 61010-1, and 62477-1.
Does the NSP-320-48 support high peak loads?
Yes. The NSP-320 series supports 200% peak power capability on 12V to 60V models, allowing up to 640W for 5 seconds. For the 48V version, this can help accommodate short-duration surge demands without changing to a larger nominal power supply.
What input range does the NSP-320-48 support?
The NSP-320-48 accepts a universal input range of 85-305VAC or 120-431VDC. This wide input range supports use across varied power environments and helps simplify specification for global industrial equipment.
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