Model MTS63-4 is the McPherson "Clone" and Improved replacement of the Original classic Voltage Regulator. Size and wire markings are the same. All operating parameter are greatly improved from the original.

This AVR has a new Heat Sink and 5 Amp Fuse. For use when field Resistance is from 13 to 100 Ohms. Comes in 2 models 220 and 120 volt sensing.