Switching power supply

Inverter 400 W - SJ-400-2k3_3U

ProductInput voltage (DC)Output power
SJ-400-2k3_3U_48V40-70 V DC400 W/450 VAOrder
If you can't find suitable product, click here - Request for individual solution

Product demand

Inverter SJ-400-2k3_3U

Switching inverter SJ-400-2k3_3U is designed to power electronic devices 230 V AC in an environment without the danger of explosion. Inverter is resistant to short circuit on the output and can operate without load.
Inverter is designed as module of the 19 "rack with a 3U height. Input voltage terminal block, circuit breaker (which can be used to disconnect input voltage) and two socket for appliances are located on the front panel. Option labeled _SK is equipped with potential free (relay) contacts and LED indicating presence of output voltage. Inverter input is galvanically isolated from output.

Electrical parameters

  • Input voltage 40...72 V DC
  • Input current 15 A at 48 V DC (permissible overload)
  • Output voltage 230 V AC 50 Hz  (sine wave)
  • Output power 400 W/450 VA
  • Permissible overload 650 W/800 VA  max.10 s (active limited)
  • Crest factor <2,5 at 450 VA
  • Overload protection (peak current limitation), protection of the right size and shape of the output voltage
  • Power without load 0,2 A at 48 V DC.
  • Efficiency min. 87 %

Environmental and operating conditions

  • Operating temperature range -5...45 ºC
  • Humidity (non-condensed) 10...90 % relative humidity
  • Altitude max. 2000 m above sea level
  • Enviroment: without the danger of explosion
  • Enclosure IP10
  • Weight 3 kg
  • Dimensional 482x132x100 mm (WxHxD)


  • EN 60950-1 ed.2
  • EN 61000-6-1 ed.2
  • EN 61000-6-3 ed.2