NTS-300/450 Series 300W/450W Reliable, Safe, and Durable DC-AC Pure Sine Wave Inverter

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By: Frank Chen/ Product Manager

Shortly after the launch of the NTS-250P/400P series of built-in DC-AC pure sine wave inverters, MEAN WELL is proud to unveil the NTS-300/450 series of 300W/450W external portable enclosed inverters. The new NTS-300/450 replaces the old generation of TS-200/400 series and brings about improvements such as smaller case size, easier operation of panel functions, optimized performance, and more competitive pricing. To allow users to quickly understand the differences between the new and old generations, please refer to the attached table for details.

The MEAN WELL NTS-300/450 differentiates itself apart from general consumer grade inverter by adopting industrial-grade high reliability, high safety, high quality, and incorporates environmental protection and high-efficiency conceptual design. It also introduces new digital smart chips and strictly select construction materials. The main features are small size, light weight, easy to carry, 93% high efficiency, instant 200% peak power capability, flexible output and operation mode adjustment, remote ON/OFF control, multiple intelligent protection (abnormal automatic shutdown), operation at -25~+70℃, standard Europe/America/China and universal plugs, short delivery time, international certification, 3 years warranty, and more. The NTS-300/450 is suitable for use in home/office, car, yacht, remote areas without AC power grid or mobile AC power supply, and can be used to power TV, computer, mobile phone charging, audio, lighting, electric fan, mobile medical cart, etc.

                 Model           Feature     OLD
  ( 2009.4 launch )
  ( 2021.3 launch )
Series TS-200/400 NTS-300/450
Output Wattage 200W (400W peak)
400W (800W peak)
300W (600W peak)
450W (900W peak)
Output Waveform Pure Sine Wave (THD<3%)
Input Voltage
(suitable for lead acid batteries)

(suitable for lead acid or lithium batteries)
No load power consumption (energy saving mode) 15W 1.2~1.5W (by model)
Efficiency 84.5~88.5% 88~93%
Operating Temperature -10~+60℃ -25~+70℃
AC Output Voltage and Frequency 100/110/115/120Vac or 200/220/230/240Vac
50Hz or 60Hz
Setting button, loop control logic may be confusing DIP S.W adjust, simple logic
Remote ON/OFF                   √
Intelligent Protection Features
DC input side – reverse polarity, under voltage, and
               overvoltage protections
AC output side – short circuit, overload, and over temperature protections
Cooling Method TS-200: fanless free-air
TS-400: built-in intelligent
       forced-air cooling
NTS-300: fanless free-air
NTS-450: built-in intelligent
         forced-air cooling
Conformal Coating None Conformal coating for moisture, dust, and dirt protection
AC Outlet Standard: US, EU
Optional: AU, UK, JP, GFCI
Standard: US, EU, China, Universal
Optional: AU, UK, GFCI
Safety Approval  

Dimensions (LxWxH) TS-200: 205 x 158 x 59mm
TS-400: 205 x 158 x 67mm
NTS-300: 210 x 130 x 55mm (-21%)
NTS-450: 210 x 130 x 55mm (-31%)
Warranty 3 years



NTS-300 Series    NTS-450 Series