MEAN WELL NSP-320 Series 320W AC/DC Enclosed Power Supply | NSP-320-12 / 24 / 48 Industrial PSU

Overview of MEAN WELL NSP-320 Series

The MEAN WELL NSP-320 Series is a 320W AC/DC enclosed power supply platform designed for high-reliability industrial and commercial applications. It integrates active PFC, high-efficiency conversion technology and a compact enclosed structure with cooling fan ON/OFF control to deliver stable DC output in demanding system environments.

As part of MEAN WELL’s enclosed switching power supply family, the NSP-320 Series is widely used in industrial automation, telecom infrastructure, network equipment, security systems, PoE-related systems and electronic control applications. It is commonly searched as NSP-320-12 power supply, NSP-320-24 industrial PSU and NSP-320-48 AC/DC power supply for OEM system integration projects.

The series supports an ultra-wide 85–305Vac input range, ensuring stable operation under global power conditions and unstable grid environments. With efficiency up to 93.5%, low no-load power consumption and 640W peak power capability for selected models, the NSP-320 Series is suitable for higher power industrial and commercial equipment.

Available output models include NSP-320-5, NSP-320-7.5, NSP-320-12, NSP-320-15, NSP-320-24, NSP-320-27, NSP-320-36, NSP-320-48 and NSP-320-60, covering a full range of 5V to 60V DC output options for different system architectures.

The NSP-320 Series is commonly selected for industrial control systems, OEM equipment, communication infrastructure, network power systems and automation applications that require stable DC output, wide input tolerance, peak load capability and long-term operational reliability.

Features

• 320W AC/DC enclosed power supply with active PFC function
• Ultra-wide 85–305Vac input range for global industrial and automation systems
• Compact 179 × 99 × 30 mm enclosure for space-limited system installations
• Available in NSP-320-5, NSP-320-7.5, NSP-320-12, NSP-320-15, NSP-320-24, NSP-320-27, NSP-320-36, NSP-320-48 and NSP-320-60 models
• High efficiency up to 93.5% with low no-load power consumption
• 200% peak power capability for 12V to 60V models
• Forced air cooling by built-in DC fan with fan ON/OFF control
• Built-in remote ON/OFF control, Remote Sense and DC OK signal for system-level power management
• Built-in constant current limiting circuit for charging and dynamic load applications
• Protections against short circuit, overload, over voltage and over temperature
• Low leakage current, 2 × MOPP isolation and suitable design for BF medical applications under system-level compliance conditions
• OVC III compliance, operating altitude up to 5000 meters and conformal coating
• Suitable for industrial automation, security systems, telecom devices, network equipment, PoE-related systems, home automation, charging applications and medical-related equipment
• 5-year manufacturer warranty

Need help choosing the right output voltage? Compare the main specifications of NSP-320-5, NSP-320-7.5, NSP-320-12, NSP-320-15, NSP-320-24, NSP-320-27, NSP-320-36, NSP-320-48 and NSP-320-60 below.

Model Selection Guide for NSP-320 Series

The MEAN WELL NSP-320 Series offers a full range of single-output models from 5V to 60V DC, allowing engineers and system integrators to select the most suitable 320W AC/DC enclosed power supply based on system voltage requirements, load type and application scenario.

Each model shares the same 85–305Vac ultra-wide input range, active PFC design and compact enclosed structure with forced air cooling, while providing different output voltages and current capabilities for industrial and commercial equipment integration.

Low Voltage Control & Electronic Systems (5V–7.5V)

The NSP-320-5 and NSP-320-7.5 models are designed for low-voltage DC systems, embedded controllers, communication modules and electronic instrumentation. These models provide high-current 5V and 7.5V output options for systems requiring stable regulated power at lower voltage levels.

Industrial Automation & Standard DC Systems (12V–24V)

The NSP-320-12 and NSP-320-24 are widely used in industrial automation, control systems, security equipment, OEM machinery and charging-related applications. Search terms such as NSP-320-12 power supply and NSP-320-24 industrial PSU are commonly used by procurement engineers and system integrators.

These models also support 640W peak power for 5 seconds, making them suitable for motors, relays, capacitive loads, charging loads and control systems with transient current demands.

Telecom, Networking & Power Distribution Systems (27V–48V)

The NSP-320-27, NSP-320-36 and NSP-320-48 models are suitable for telecom equipment, network devices, PoE power systems and distributed power architectures. They provide stable DC output for systems requiring higher voltage levels, centralized power distribution and short-duration peak load support.

Search terms such as NSP-320-48 AC/DC power supply and 320W enclosed PSU for telecom are commonly associated with these models.

High Voltage Industrial Systems (60V)

The NSP-320-60 model is designed for higher voltage industrial applications, including specialized automation equipment, industrial drives, communication systems and power architectures requiring extended voltage headroom. It is selected when higher voltage DC stability is required within a compact 320W enclosed design.

Need help choosing the correct NSP-320 model? Match your system voltage, load characteristics, peak current demand and cooling requirements to select the most suitable 320W AC/DC enclosed power supply for your application.

Related MEAN WELL Power Supply Series

For system design comparison and power architecture planning, the following MEAN WELL power supply series are commonly used alongside the NSP-320 Series in industrial, telecom and automation applications:

• 
  NSP-200 Series – 200W AC/DC enclosed power supply for industrial automation, telecom systems and applications with lower power demand than the NSP-320 Series.
• 
  NSP-500 Series – higher power AC/DC enclosed power supply for demanding industrial, telecom and system integration projects requiring greater output capacity.
• 
  LRS-350 Series – cost-effective enclosed switching power supply for general industrial and commercial equipment requiring standard performance and high cost efficiency.
• 
  NDR-240 Series – DIN rail power supply designed for industrial control cabinets, automation systems and panel-mounted power distribution applications.

Need help selecting the right MEAN WELL power supply?
Compare NSP-200, NSP-320 and NSP-500 based on power level, cooling method, peak load demand and system architecture.

Peak Power, Remote ON/OFF, Remote Sense and DC OK Signal

The MEAN WELL NSP-320 Series provides built-in peak power capability, remote ON/OFF control, Remote Sense and DC OK signal functions for industrial system integration and dynamic load applications.

For NSP-320-12, NSP-320-15, NSP-320-24, NSP-320-27, NSP-320-36, NSP-320-48 and NSP-320-60 models, the series supports up to 200% peak power capability for 5 seconds, enabling stable operation under transient load conditions such as motor startup, capacitive loads, charging loads and system inrush current.

The built-in remote ON/OFF control function allows external switching of the power supply, making the NSP-320 Series suitable for systems requiring power sequencing, standby control and centralized power management. Remote Sense and DC OK signal functions further support system-level monitoring and voltage compensation in industrial equipment.

Peak Power Capability

The NSP-320 Series supports short-term peak output for 12V to 60V models. For example, NSP-320-24 can deliver up to 640W peak power for 5 seconds, while maintaining rated output power under continuous operation.

This feature is particularly useful for applications with transient load demands such as industrial automation systems, telecom infrastructure, security equipment, network devices, charging-related equipment and other DC-powered systems requiring short-duration high current support.

Remote ON/OFF Control

The remote ON/OFF function is controlled via RC+ and RC- terminals on the CN1 connector. According to the function specification, the power supply remains ON when RC+ to RC- is open or maintained at 0–0.8Vdc.

The output is turned OFF when RC+ to RC- is driven to 3.3–10Vdc by an external control signal. This enables integration with system-level control logic, automation sequences and standby power management.

Remote Sense and DC OK Signal

The NSP-320 Series also provides Remote Sense and DC OK signal functions for system-level integration. Remote Sense helps compensate voltage drop between the power supply and the load, while the DC OK signal allows the system to monitor output status for control, alarm or protection logic.

Control Connector Information

The NSP-320 Series uses dedicated control interfaces for remote control, Remote Sense and DC OK signal functions. These functions simplify integration into industrial equipment, automation systems, communication devices, charging-related systems and distributed power architectures.

Need installation and wiring details for the NSP-320 Series? Continue below to review mechanical dimensions, terminal assignment, control interface details and safety compliance information.

Mechanical Dimensions and Installation

The MEAN WELL NSP-320 Series features a compact enclosed design with overall dimensions of 179 × 99 × 30 mm. Its slim structure and built-in cooling fan with ON/OFF control make it suitable for higher power installations in industrial automation, control systems, security equipment, network devices, telecom systems and medical-related applications.

Dimensions

The overall mechanical size of the NSP-320 Series is 179 × 99 × 30 mm. This compact low-profile form factor helps save installation space while providing a 320W AC/DC power supply solution with active PFC, ultra-wide input range and stable high-efficiency output performance for industrial applications.

Terminal Assignment

The NSP-320 Series includes AC input, DC output and multiple control connections. The input terminal provides AC/L or DC input +Vin, AC/N or DC input -Vin, and FG connections. The DC output terminal provides -Vo and +Vo connections. The control interface supports remote ON/OFF control, Remote Sense and DC OK signal functions for system-level integration.

Installation Notes

When integrating the NSP-320 Series into equipment or control cabinets, users should review mounting direction, wiring clearance, terminal assignment, fan ventilation space and temperature derating according to the installation manual and datasheet. Because the NSP-320 Series uses forced air cooling by built-in DC fan, proper airflow clearance should be considered to ensure stable long-term operation.

Need application and compliance information for the NSP-320 Series? Continue below to explore recommended applications, certifications, safety standards and EMC information.

Applications

The MEAN WELL NSP-320 Series is suitable for a wide range of industrial, commercial and medical-related applications that require a compact 320W AC/DC enclosed power supply with active PFC, ultra-wide input range and reliable high-efficiency DC output performance.

With its 85–305Vac input range, built-in cooling fan with ON/OFF control, low leakage current, 2 × MOPP isolation and multi-standard safety approvals, the NSP-320 Series is designed for equipment where stable operation, higher output power and long-term reliability are required.

• Industrial automation machinery and control systems
• Security systems and access control equipment
• Mechanical and electrical equipment
• Electronic instruments, measurement and control equipment
• Network equipment and telecom infrastructure
• Power sourcing equipment for PoE-related systems
• Charging-related equipment and dynamic load applications
• Home automation systems
• Medical devices and BF-rated medical applications (system-level compliance required)

Need certification and compliance details for your project? Continue below to review safety standards, EMC information, leakage current data and approval specifications for the NSP-320 Series.

Certifications and Safety

The MEAN WELL NSP-320 Series is designed for multi-field safety compliance across industrial, ITE, household, medical-related and energy conversion applications. This makes it suitable for projects that require a compact 320W AC/DC enclosed power supply with broad international certification coverage.

According to the official NSP-320 datasheet, the series includes the following safety approvals and related compliance standards:

• CB: IEC62368-1, IEC60335-1, IEC61558-1/-2-16, IEC61010-1/-2-201, IEC60601-1 and IEC62477-1
• DEKRA: BS EN/EN62368-1, BS EN/EN60335-1, BS EN/EN61558-1/-2-16, BS EN/EN61010-1/-2-201, BS EN/EN60601-1 and BS EN/EN62477-1
• UL: UL62368-1, ANSI/AAMI ES60601-1 and UL61010-1/-2-201
• CCC: GB4943.1
• BSMI: CNS15598-1
• EAC: TP TC 004 approved
• KC / BIS: KC62368-1 and BIS IS13252 certified, available by request depending on model and regional availability
• SEMI F47: voltage sag immunity compliance verified

The datasheet also lists EMC emission and immunity standards such as BS EN/EN55032, BS EN/EN55035, BS EN/EN61000-6-2, BS EN/EN60601-1-2, BS EN/EN55014-1, BS EN/EN55014-2, BS EN/EN61000-3-2 and BS EN/EN61000-3-3.

For medical-related applications, the NSP-320 Series provides low leakage current, 2 × MOPP isolation between primary and secondary, and suitability for BF medical applications under system-level compliance conditions. The datasheet specifies earth leakage current below 350μA and touch current below 100μA at 277Vac.

The series supports OVC III compliance for IEC/EN 61558-1/-2-16 applications at altitude up to 2000 meters, while other listed standards are specified with OVC II and altitude ratings up to 4000 or 5000 meters depending on the applicable safety standard.

Need more product details before sending an inquiry? Continue below to review common questions about the NSP-320 Series, available output models, datasheet information and application selection.