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Genuine Stamford Design
12 month warranty
Analog voltage regulator
Self Excited
CE Compliant
Worldwide stock
Tag Model

The AS540 is an analogue, 2-phase sensing, self-excited automatic voltage regulator (AVR) incorporating an interface for the optional auxiliary winding for improved motor starting performance and sustained short circuit current.

The AS540 is provided as standard with the STAMFORD® S0 and S1 range. To ensure your AS540 is genuine, purchase it from an authorised NEWAGE® | STAMFORD® | AvK® dealer. 
Part number: A059F437


Why buy genuine?

  • Minimise risk of play and equipment failure
  • Maximise power supply security
  • Matched performance capability to ensure alternator stability
  • Tested to react in emergencies, triggering support protection systems
  • Peace of mind