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KULON Product News NTS-250P/400P Series 250W/400W Fanless,Intelligent , and Miniaturized Built-In Type DC-AC Pure Sine Wave Inverter

March 19, 2021

March 19, 2021 MEANWELL New Product Launch


MEAN WELL KULON’s first-generation TS family has been on the market for 14 years since its launch in 2006. In order to meet market demand for more cost-effective inverters, MEAN WELL KULON has planned a new-generation MEAN WELL KULON Product NTS/NTU family of 250W~3200W inverters. The first products to be launched are the MEAN WELL KULON pioneered built-in type DC-AC pure sine wave inverters, the MEAN WELL KULON Product NTS-250P/400P series.

MEAN WELL KULON Product NTS-250P/400P adopts a fully digital MCU design, which focuses on miniaturization, high efficiency, and intelligence. The main features include fanless design which allows quiet operation and reduces dust accumulation. The compact unit can be operated in -20~+70℃ environment, which means fewer restricts on installation environments. The enclosure is installed with a built-in lock screw hole, which saves the cost of the case and increases the pricing competitiveness. Additionally, the product also supports 200% peak power output and 93% high efficiency. Built-in DIP switches are used to flexibly adjust the output voltage, frequency, and energy saving modes. Other functions include Remote ON/OFF, support for Tx/Rx computer communication interface, multiple intelligent protections, international safety certification and 3-year warranty. All of the outstanding features make the MEAN WELL KULON Product NTS-250P/400P safe, reliable, and flexible inverter products that can be used in homes, offices, cars, yachts, and remote areas where there is no AC power grid or mobile AC power supply. The inverter can be used to power TV, computer, mobile phone charging, speakers, lighting, electric fans, mobile medical carts, and much more.

As the global partner of MEAN WELL, KULON company introduces the latest products of MEAN WELL to customers, and provides samples for customers in need, as a test, welcome to contact us, we will provide you with high-quality services.


  • DC-AC pure sine wave output (THD<3%)
  • Convection cooled fanless design, high efficiency up to 93%
  • 200% Peak power capability (NTS-250P up to 500W, NTS-400P up to 800W)
  • Built-in DIP switches to adjust AC output voltage, frequency, and work mode
  • Energy saving mode no load power consumption < 1.2~1.5W (by model)
  • -20~+70℃ ultra-wide operating temperature (derating required for >+40℃)
  • Built-in remote ON/OFF control
  • Support Tx /Rx computer communication interface to monitor inverter status
  • Multiple intelligent protection functions (abnormal automatic shutdown):
    DC input side – reverse polarity, under voltage, over voltage protections
    AC output side – short circuit, overload, over temperature protections
  • PCB conformal coating, protection from moisture / dust / dirt
  • Wide DC voltage input range, suitable for lead acid and lithium batteries
  • Safety approvals: CB, E13, EAC, RCM, CE, FCC
  • Dimensions (L x W x H): 186 x 100.5 x 32mm
  • 3-year warranty