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Genuine STAMFORD design
12 month warranty
Digital voltage regulator
PMG or Auxiliary Winding
CE Compliant
Worldwide stock
Tag Model
856
AS440

The AS440 is an analogue, 2-phase sensing, self-excited automatic voltage regulator (AVR). The AS440 incorporates Surface Mount Technology (SMT) to its design.

The AS440 is supplied as standard to the STAMFORD® S4 and STAMFORD® HC5 alternators and is an option for the STAMFORD® UC22 and UC27 alternators. Ensure your AS440 is genuine by buying it from an authorised STAMFORD® | AvK® dealer.
Part number: E000-24403/1P

AVR

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