Siemens Energy & Automation, Inc.

Richard Hudson

Jon David Pickens

Daniel S Redler

A method of preventing vibration loosening of a clamping screw of a circuit protection apparatus is provided. The circuit protection apparatus has a conductor receiving member including a conductor receiving opening for receiving an electrical conductor therein. The conductor receiving member has an aperture extending from a surface thereof into communication with the conductor receiving opening . An overall extent of the aperture includes threads. The method provides a clamping screw having a threaded shaft . The threaded shaft has a surface feature in the threads thereof near an end of the shaft. The clamping screw is inserted into the threaded aperture until the surface feature is in interference engagement with threads of the threaded aperture to hold the clamping screw in the threaded aperture, with the end of the shaft being disposed to permit access to the conductor receiving opening such that the clamping screw need not be backed-out from the threaded aperture to provide access to the conductor receiving opening

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Suwanee, GA, United States of America

Richard Hudson