• Rated Power: 250 W (continuous)
• Surge Power: 500 W (for 30 cycles)
• Output Voltage: 200 / 220 / 230 / 240 V AC (DIP switch selectable, default: 230 V AC)
• Output Frequency: 50 / 60 Hz (DIP switch selectable, default: 50 Hz)
• Output Waveform: True Sine Wave (THD < 3%)
• Input DC Voltage: 48 V DC (40 – 66 V DC operating range)
• Maximum DC Current: 7 A
• Efficiency: up to 92%
• No-Load Dissipation (Saving Mode): ≤ 1.5 W (saving mode) / 12 W (non-saving mode)
• Operating Temperature: −20 °C to +70 °C
• Cooling: Fanless design (cooling by free air convection)
• Protections (Input): Reverse polarity, DC low alarm, DC low shutdown, Over voltage
• Protections (Output): Short circuit, Overload, Over temperature
• Supported Battery Types: Lead-acid or Li-ion batteries
• Communication & Control: UART Tx/Rx for status monitoring, Remote ON-OFF control
• Form Factor: Built-in open-frame PCB type
• Dimensions (L x W x H): 186 mm x 100.5 mm x 34 mm
• Weight: approx. 0.87 kg
• Safety & EMC Certificates: CB, IEC62368-1, CSA/UL 62368-1, E13, EAC, CE, UKCA, AS/NZS 62368.1
• Manufacturer Warranty: 3 Years

Information About the MEAN WELL NTS-250P-248

The MEAN WELL NTS-250P-248 is a compact, open-frame PCB-type off-grid DC-AC power inverter engineered for direct integration into 48 V DC system architectures. It provides a stable 250 W continuous output power with a surge capability of up to 500 W to handle peak inductive loads easily. Outputting a clean true sine wave with THD < 3%, it guarantees stable, high-quality power for sensitive electronic equipment, telecommunications modules, and precision instruments. Onboard DIP switches allow easy adjustment of AC output voltages and frequencies.

Featuring a fanless, completely silent construction, the NTS-250P-248 uses free air convection for cooling, removing fan wear and acoustic noise concerns. The 48 V DC input configuration operates at a lower current (7 A max), contributing to high efficiency of up to 92% while maintaining a minimal no-load consumption of under 1.5 W in standby saving mode. Compatible with both lead-acid and lithium-ion battery systems, it incorporates comprehensive protection against short circuits, overloads, over-temperature, and battery deep discharge. Equipped with a UART Tx/Rx port for real-time monitoring and a remote ON/OFF control terminal, it is a highly reliable solution for buses, wireless networks, marine systems, and off-grid solar setups, backed by a 3-year manufacturer warranty.