Ready to wire terminal assembly with vibration resistant clamping screws

A circuit protection apparatus comprising:

• a conductor receiving member including a conductor receiving opening for receiving an electrical conductor therein, said conductor receiving member having an aperture extending from a surface thereof into communication with the conductor receiving opening, an overall extent of the aperture including threads,
• a clamping screw having a threaded shaft, said threaded shaft having a surface feature in the threads thereof near an end of said shaft, said clamping screw being disposed in said threaded aperture with said surface feature in interference engagement with threads of said threaded aperture to hold said clamping screw in said threaded aperture, with the end of said shaft being disposed to permit access to said 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, said clamping screw being constructed and arranged such that when said clamping screw is tightened, said surface feature will move from engagement with said threads and the end of said shaft will move into said conductor receiving opening.

A clamping screw for clamping an electrical conductor of a circuit protection apparatus, the circuit protection apparatus having a conductor receiving member including a conductor receiving opening for receiving an electrical conductor therein, the conductor receiving member having an aperture extending from a surface thereof into communication with the conductor receiving opening, an overall extent of the aperture including threads, said clamping screw comprising:

• a threaded shaft having a surface feature in the threads thereof near an end of said shaft such that when said end of said shaft is inserted into the threaded aperture, said surface feature becomes engaged with threads of said threaded aperture in an interference manner.