Over 15 years experience of providing support of MEAN WELL Power Supplies
NSP-320-12
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-320-12?
The NSP-320-12 is a 320.4W enclosed AC/DC power supply with a 12V DC output rated at 26.7A. It is designed for applications that need a high-current 12V industrial power source with high efficiency and active PFC.
What types of applications is the NSP-320-12 intended for?
This model is designed for multi-industry use, including industrial automation, mechanical equipment, security systems, telecommunications, PoE power sourcing, and some medical-related equipment. Its high reliability design and broad safety compliance make it suitable for demanding commercial and industrial environments.
Can the NSP-320-12 operate in harsh temperature conditions?
Yes. The NSP-320-12 supports an operating temperature range from -40°C to +85°C when used within the product's derating limits. Its forced-air cooling design with a built-in DC fan helps maintain stable performance across a wide temperature range.
Does the NSP-320-12 support a wide input voltage range?
Yes. This model accepts a universal 85-305VAC input range and also supports 120-431VDC input. That wide input range makes it easier to use in systems deployed across different regional power standards.
What makes the NSP-320-12 different from standard enclosed power supplies?
Compared with basic enclosed power supplies, the NSP-320-12 adds high-reliability features such as active PFC, remote ON/OFF control, remote sense, a DC OK signal, fan ON/OFF temperature control, and up to 200% peak power capability for 5 seconds. It also carries broad safety approvals, including IEC/EN/UL 62368-1 and 60601-1 with 2xMOPP support.
Is the NSP-320-12 suitable for systems that need monitoring and protection features?
Yes. The NSP-320-12 includes a DC OK signal for system monitoring, remote sense for output compensation up to 0.3V, and protections for short circuit, overload, overvoltage, and overtemperature. These features make it a strong fit for equipment that requires stable power and fault visibility.
Is the NSP-320-12 built for energy-efficient operation?
Yes. This model delivers efficiency up to 93.5% and uses built-in active PFC to improve input power performance. It also has very low no-load power consumption, helping reduce wasted energy in standby or lightly loaded systems.
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