• Rated Power: 400 W (Continuous), 800 W (Surge Peak)
• Output Voltage: 230 VAC (200 / 220 / 230 / 240 VAC selectable via DIP S.W)
• Output Frequency: 50 Hz / 60 Hz (selectable via DIP S.W)
• Waveform: True Sine Wave (THD < 3%)
• Input Voltage: 48 VDC (40 – 66 VDC)
• Efficiency: Up to 91%
• No-Load Power Dissipation: ≤ 1.5 W in power saving mode
• Operating Temperature: −20 °C to +70 °C
• Cooling: 250 W convection, 400 W forced air
• Protections (Input): Reverse polarity, DC low alarm, DC low shutdown, over voltage, battery over discharge
• Protections (Output): Short circuit, overload, over temperature
• Isolation Voltage: 3000 VAC (Input to Output), 1500 VAC (Output to FG)
• Interfaces & Control: Remote ON-OFF control, Tx/Rx communication interface for monitoring
• Dimensions (L x W x H): 186 mm x 100.5 mm x 34 mm
• Weight: approx. 750 g
• Safety & EMC Standards: CB IEC62368-1, CSA/UL 62368-1, E13, EAC, CE, UKCA
• LED Indicators: Status indicators for system, DC input, and load level
• Manufacturer Warranty: 3 Years

Information about the MEAN WELL NTS-400P-248

The MEAN WELL NTS-400P-248 is a high-reliability open-frame 48V DC-AC built-in power inverter designed to deliver clean True Sine Wave AC power (THD < 3%) to sensitive equipment. Controlled by an advanced digital MCU architecture and protected with conformal coating, this low-profile PCB module provides exceptional thermal and power stability. It offers 250 W output under free air convection and up to 400 W continuous output with forced air cooling, backed by a high surge power capability of 800 W to easily absorb initial load transients during equipment startup.

Engineered for high system efficiency, the inverter reaches an efficiency of up to 91% while maintaining an ultra-low standby consumption under 1.5 W in energy-saving mode to extend battery life in 48V battery banks. It comes equipped with a dedicated Tx/Rx UART communication port for real-time status monitoring and internal parameter adjustment. Featuring DIP-switch selectable output voltages and frequencies, an extended operating temperature range of -20 °C to +70 °C, and full input/output protection suites, this unit is perfectly suited for telecommunication nodes, data communication systems, wireless networks, and remote off-grid installations.