Spares / Auto Voltage Regulators / AVRs for Stamford Generators

Stamford MX322 AVR

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$1,113.20$935.00 inc GST($850.00 ex GST)
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The MX322™ analogue, 3-phase sense Automatic Voltage Regulator (AVR) and forms part of the excitation system for a brush-less alternator. Excitation power is derived from a 3-phase permanent magnet generator (PMG), to isolate the MX322™ AVR control circuits from the effects of non-linear loads and to reduce radio frequency interference on the alternator terminals.

All genuine STAMFORD® AVRs have 12 month warranty as standard!

Note: MX321 Replacement



The MX322 AVR is provided as standard for the STAMFORD® S6 and HC6 alternators and can also be provided as an option across the STAMFORD® range. 


  • Voltage regulation  +/-0.5%RMS
  • Self excited AVR
  • Suitable frequency 50/60 Hz
  • Field Output: 120 VDC, 6 A
  • Under frequency roll off  (UFRO)
  • Over voltage detection - set point 10-30VDC