Introduction
This manual provides essential instructions for the safe and efficient installation, operation, and maintenance of your EverSale MW Mean Well SE-1500-48 Single Output Power Supply. Please read this manual thoroughly before using the product and retain it for future reference.
Important Safety Instructions
Failure to follow these safety instructions may result in electric shock, fire, or serious injury. Always observe local and national electrical codes.
- Ensure the power supply is disconnected from the AC mains before any installation, wiring, or maintenance.
- This unit is designed for professional installation. Installation should be performed by qualified personnel only.
- Do not operate the unit in environments with excessive moisture, dust, or extreme temperatures outside its specified operating range.
- Ensure proper grounding of the unit.
- Do not open the casing of the power supply. There are no user-serviceable parts inside.
- Provide adequate ventilation to prevent overheating. The unit uses forced air cooling.
Product Overview
The EverSale MW Mean Well SE-1500-48 is a 1500W single output power supply designed for various industrial and computing applications. Key features include:
- AC input 180~264VAC only for the SE-1500 model.
- Protections against short circuit, overload, over voltage, and over temperature.
- Forced air cooling via a built-in DC fan.
- Built-in remote sense function.
- DC OK signal and remote ON/OFF control.
- 100% full load burn-in test for reliability.
- LED indicator for power on status.

Figure 1: Front view of the EverSale MW Mean Well SE-1500-48 Power Supply, showing the main casing and output terminals.
Setup and Installation
1. Mounting
Mount the power supply in a location that allows for adequate airflow around the unit. Ensure the built-in DC fan has unobstructed access to air for cooling. Refer to the mechanical specifications for mounting dimensions and hole patterns.

Figure 2: Mechanical specifications, block diagram, derating curve, and static characteristics of the SE-1500 series power supply. This image provides dimensions and internal layout information.
2. AC Input Connection
The SE-1500-48 model accepts an AC input voltage range of 180~264VAC. Connect the AC mains to the designated input terminals (L, N, FG) on the power supply. Ensure all connections are secure and correctly polarized.
3. DC Output Connection
Connect your load to the DC output terminals (+V, -V). Observe correct polarity. Ensure the total current draw of your load does not exceed the power supply's maximum output current (31.3A for 48V output).
4. Remote Sense Function
The built-in remote sense function compensates for voltage drop across the load wires. Connect the +S and -S terminals to the positive and negative terminals of the load, respectively. This helps maintain accurate voltage at the load.
5. DC OK Signal and Remote Control
The power supply includes a DC OK signal and remote ON/OFF control via the CN3 connector. Refer to the function description for CN3 for detailed wiring and operation.

Figure 3: Detailed diagrams for CN3 function description, DC OK signal, Remote Control, and Remote Sense connections. This image illustrates how to wire these advanced features.
Operating Instructions
1. Power On/Off
Once all connections are securely made, apply AC power to the unit. The LED indicator on the power supply will illuminate, indicating that the unit is powered on. To turn off, disconnect the AC power or use the remote control function if configured.
2. Output Voltage Adjustment
The output voltage can be finely adjusted within a specified range (e.g., 43.2V to 52.8V for the 48V model) using the internal potentiometer. This adjustment should only be performed by qualified personnel with appropriate measurement equipment.
3. Monitoring DC OK Signal
The DC OK signal provides a TTL level output (High when PSU turns on) to indicate proper operation. This can be integrated into monitoring systems.
4. Remote ON/OFF Control
The power supply can be turned ON/OFF by using the "Remote Control" function via the CN3 connector. Refer to Figure 3 for wiring details.
Maintenance
The EverSale MW Mean Well SE-1500-48 power supply is designed for long-term reliability and requires minimal maintenance. However, periodic checks are recommended:
- Cleaning: Ensure the ventilation openings and fan are free from dust and debris to maintain optimal cooling performance. Use a soft brush or compressed air for cleaning. Always disconnect power before cleaning.
- Connections: Periodically check all input and output wiring connections for tightness and signs of wear or corrosion.
- Environment: Verify that the operating environment remains within the specified temperature and humidity ranges.
Troubleshooting
If you encounter issues with your power supply, refer to the following common problems and solutions:
- No Output Voltage / Power LED Off:
- Check AC input voltage and connections.
- Verify that the AC input switch (if present on other models, but SE-1500 is fixed) is correctly set.
- Ensure no short circuit or severe overload on the output.
- Check for tripped circuit breakers or blown fuses in the AC line.
- Output Voltage Fluctuates or is Incorrect:
- Check load connections and ensure they are secure.
- Verify the remote sense connections are correct and functional.
- Ensure the load current does not exceed the power supply's rating.
- Check for proper ventilation; overheating can cause instability.
- Overload Protection Activated:
- Reduce the load connected to the power supply.
- Check for any short circuits in the load circuit.
- The unit will automatically recover after the overload condition is removed.
- Over Temperature Protection Activated:
- Ensure adequate ventilation and clear any obstructions from the fan and vents.
- Reduce ambient temperature if possible.
- The unit will automatically recover once the temperature returns to a safe level.
If the problem persists after following these steps, contact qualified service personnel.
Specifications
The following table details the technical specifications for the EverSale MW Mean Well SE-1500-48 Single Output Power Supply.

Figure 4: Comprehensive specification table for the SE-1500 series, including electrical characteristics, protection features, and environmental conditions. Refer to the SE-1500-48 column for specific model data.
| Feature | Specification |
|---|---|
| Model Number | SE-1500-48 |
| Output Voltage | 48V |
| Output Current | 31.3A |
| Output Wattage | 1500W |
| AC Input Voltage | 180~264VAC |
| Cooling Method | Forced Air (Built-in DC fan) |
| Product Dimensions (L x W x H) | 10.94 x 7 x 2.5 inches |
| Item Weight | 7.27 pounds |
| Protections | Short circuit, Overload, Over voltage, Over temperature |
| Features | Remote sense, DC OK signal, Remote ON/OFF control |
Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact EverSale customer service. Keep your purchase receipt as proof of purchase.