SIEMENS

Product Description
6GA2-491-1A is a half-wave thyristor phase-controlled AVR, which is the core circuit board component of the excitation system for brushless generators.

SIEMENS 6GA2-491-1A /A541432 AVR Automatic Voltage Regulator

Its functions include closed-loop voltage stabilization, excitation startup and voltage building, built-in protection and external voltage adjustment.
It is used for Siemens 1FC6 series brushless synchronous generators and is a spare part for shipyards, power plants’ backup power supply, industrial emergency generator sets. It belongs to the excitation system spare parts and can be directly replaced and repaired to fix the voltage stabilization failure of the generator after a fault.
This product has been discontinued and our company has a small amount of inventory.