The SX440 is a half-wave phase-controlled thyristor type Automatic Voltage Regulator and forms part of the excitation system for a brushless generator. In addition to regulating the generator voltage, the AVR circuitry includes underspeed and sensing loss protection to ensure safe, reliable control of the generator. This model supercedes the Series 4 range.

Features include:

*Stability adjustment *Optimum response selection
*Under frequency roll off adjustment *Droop adjustment
*Trim adjustment

This SX440 AVR replacement has exact same form and function as the original

Compatible with ONAN 305-0824