Molded case circuit breaker
AssigneeFuji Electric Co., Ltd.
InventorsTadashi Asada, Naoshi Uchida, Kazunori Yonemitsu, Masaru Isozaki, Toshiyuki Onchi
Life of this patent
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Abstract
A molded case circuit breaker includes a switching mechanism and a current-interrupting section. The current-interrupting section is composed of an insulated case, fixed contact shoes arranged diagonally opposite to each other, a bridging rotary contact shoe, a contact shoe holder, and arc extinguishing devices. The fixed contact shoes are composed of linear contact shoe conductors to reduce a height of the section, and the fixed contact shoes are arranged vertically in parallel and opposite each other so that the fixed contact shoes and the rotary contact shoe form a Z-shaped conducting path.
Claims9
A molded case circuit breaker, comprising:
- a switching mechanism, and
- a current-interrupting section connected to the switching mechanism, and including an insulated case;
- a pair of fixed contact shoes disposed inside the insulated case to face each other, each of said fixed contact shoes having a substantially linear conductor portion, a tip portion and a terminal portion;
- a rotary contact shoe disposed between the fixed contact shoes so that said fixed contact shoes and said rotary contact shoe form a Z-shape conducting path when the switching mechanism is on, and the rotary contact shoe is rotated to be separated from the fixed contact shoe by an electromagnetic counter force when an overcurrent flow through the z-shape conducting path;
- and a contact shoe holder linked to the switching mechanism and holding the rotary contact shoe.
Dependencies are inferred from the claim text.