Siemens Energy & Automation, Inc.

Michael W Souza

W Dale Robbins

Russell Bryant Green

James Harvey Blessitt

Peter P Clickner

James F Ferree

Stacey L Duvall

A circuit breaker (,) including a terminal barrier system (,). The terminal barrier system (,) includes a terminal barrier (,) attached to a circuit breaker base (,) at the terminals (,), line and load, of the breaker (,) and a terminal connector (,) mounted in the terminal barrier (,) to align with a terminal (,) of the breaker (,). Several embodiments of the terminal barrier (,) and terminal connector (,) are provided which allow flexibility in combining the various terminal barriers and terminal connectors for a given current rating of the breaker (,). The terminal barrier system (,) protects the terminals (,) of the circuit breaker during short circuit condition operations, prevents pole to pole electrification and prevents accidental contact with live electrical wires in the contacts (,). The circuit breaker (,) also includes a molded case (,), a first and second terminal (,) mounted in the case (,), the first contact (,) electrically coupled to the first terminal (,) and a second contact (,) electrically coupled to the second terminal (,). An operating mechanism (,) having a pivoting member (,) movable between an ON position, and OFF position and a TRIPPED position is coupled to the second contact (,). An intermediate latch mechanism (,) mounted in the housing (,)is coupled to the operating mechanism (,) and is selectively operated by a trip unit (,) coupled to the second contact (,) and the second terminal (,). An electric arc extinguishing apparatus (,) is mounted in the housing (,) and positioned in confronting relation with the first and second contact. (,)

Terminal barrier system for molded case circuit breaker

A circuit breaker terminal shield with integral securing and installation and removal features apparatus, means and system for use with a circuit breaker assembly having at least one circuit breaker terminal, at least one fastening aperture associated with a circuit breaker projecting end member and another circuit breaker projecting end member, the circuit breaker terminal shield apparatus having at least one terminal shield main frame member having a first terminal shield fastening member adapted to fasten the terminal shield main frame member to the circuit breaker projecting end member of the circuit breaker assembly, and further having a second terminal shield fastening member adapted to further fasten the terminal shield main frame member to the another circuit breaker projecting member of the circuit breaker assembly.

Circuit breaker terminal shield with integral securing and installation

A circuit breaker terminal shield with integral securing and installation and removal features method for fastening a circuit breaker terminal shield apparatus to at least one terminal end of a circuit breaker assembly having at least one circuit breaker terminal, at least one fastening aperture associated with a circuit breaker projecting end member and another circuit breaker projecting end member, the method for fastening the circuit breaker terminal shield apparatus comprising the steps of fastening a first terminal shield fastening member, which is adapted to fasten the terminal shield main frame member, to the circuit breaker projecting end member of the circuit breaker assembly, and fastening a second terminal shield fastening member, which is adapted to further fasten the terminal shield main frame member, to the another circuit breaker projecting end member of the circuit breaker assembly.

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Monroe, GA, United States of America

Michael W Souza