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.
 

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