NTN21K0 Series

21kW regulated high voltage AC-DC power supplies with isolated output voltages from 0-6.5VDC to 0-350VDC

The NTN21K0 series are highly stable linear regulated power supplies with low ripple and an isolated output. Featuring thyristor (SCR) pre-regulation followed by transistor regulation to provide double stabilization.

The power supplies can be operated in local, analog (optional) and digital (optional) operating modes.

Sense line connections provide feedback compensation for voltage drop in the load lines.


  • Output voltages 0-6.5VDC to 0-350VDC isolated
  • 3 phase AC input
  • Continuous operation at full rated power
  • Multi-function control panel with user friendly interface
  • Digital, LAN and USB interface option
  • Analog programming/interface option
  • Manual voltage & current control with automatic transition & digital display
  • Set-point display via a button
  • Set-point adjustment possible with disabled output
  • Push-button switch for output voltage
  • Short circuit & arc protection
  • Inrush current limiter
  • 2 year warranty
Image Model Name Power Input Voltage Output Voltage Output Current Datasheet Stock Check RFQ
NTN21K0-6V5 21000W Three Phase 6.5V 2000A Datasheet RFQ
NTN21K0-12V5 21000W Three Phase 12.5V 1500A Datasheet RFQ
NTN21K0-20 21000W Three Phase 20V 800A Datasheet RFQ
NTN21K0-35 21000W Three Phase 35V 600A Datasheet RFQ
NTN21K0-65 21000W Three Phase 65V 300A Datasheet RFQ
NTN21K0-125 21000W Three Phase 125V 150A Datasheet RFQ
NTN21K0-200 21000W Three Phase 200V 100A Datasheet RFQ
NTN21K0-350 21000W Three Phase 350V 60A Datasheet RFQ
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