MDF-1, MDF-2, MDF-3, MDF-4, AKA 1344D82A42B (and other part numbers)
Under/Over frequency relay. We are now set up to repair these.
All MDF relays receive a burn-in and are accompanied by a test report.
If you have any questions, please email info@ShewmakerElectronics.com, or call us at 800-330-5409