US 12,230,467 B2
Breaker, breaker assembly, and contactor
Yuanzhong Wang, Shanghai (CN); Jiaren Xiao, Shanghai (CN); and Xuedong Xia, Shanghai (CN)
Assigned to Schneider Electric Industries SAS, Rueil-Malmaison (FR)
Appl. No. 17/788,004
Filed by SCHNEIDER ELECTRIC INDUSTRIES SAS, Rueil-Malmaison (FR)
PCT Filed Dec. 24, 2020, PCT No. PCT/CN2020/139013
§ 371(c)(1), (2) Date Jun. 22, 2022,
PCT Pub. No. WO2021/129738, PCT Pub. Date Jul. 1, 2021.
Claims priority of application No. 201922351226.7 (CN), filed on Dec. 24, 2019.
Prior Publication US 2023/0026399 A1, Jan. 26, 2023
Int. Cl. H01H 9/32 (2006.01); H01H 9/34 (2006.01)
CPC H01H 9/32 (2013.01) [H01H 9/34 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A breaker used for controlling only one current path, wherein the breaker comprises:
a contact assembly, comprising:
a first stationary contact, comprising a first stationary contact portion;
a second stationary contact, comprising a second stationary contact portion; and
a movable contact, comprising a first movable contact portion and a second movable contact portion which are respectively located at both ends of the movable contact;
an actuating member, connected to the movable contact to actuate the movable contact in a first direction to move between an open position and a closed position, at the open position, the first movable contact portion being spaced apart from the first stationary contact portion and the second movable contact portion being spaced apart from the second stationary contact portion to turn-off the one current path, and, at the closed position, the first movable contact portion being in contact with the first stationary contact portion and the second movable contact portion being in contact with the second stationary contact portion, to turn on the one current path; and
a housing, accommodating only one contact assembly and one actuating member,
a first arc extinguishing device comprising a plurality of first arc extinguishing grid sheets;
a second arc extinguishing device comprising a plurality of second arc extinguishing grid sheets;
a first arc running piece, comprising a first arc running end portion arranged adjacent to the first stationary contact portion and a second arc running end portion, the first arc running piece crossing the plurality of first arc extinguishing grid sheets of the first arc extinguishing device to guide an arc from the first stationary contact to the first arc extinguishing device;
a second arc running piece, comprising a third arc running end portion arranged adjacent to the second stationary contact portion and a fourth arc running end portion, the second arc running piece crossing the plurality of second arc extinguishing grid sheets of the second arc extinguishing device to guide an arc from the second stationary contact to the second arc extinguishing device; and
an arc guiding piece, configured to guide an arc from the movable contact to the arc extinguishing devices,
wherein the breaker only comprises one movable contact and two stationary contacts, and the two stationary contacts are the first stationary contact and the second stationary contact respectively, and wherein:
the arc guiding piece is an integral piece, and comprises a first arc guiding section extending in the first direction and a second arc guiding section extending in the first direction, which are respectively located at both ends of the arc guiding piece, the first arc guiding section is arranged between the first arc extinguishing device and the movable contact in a second direction perpendicular to the first direction, and the second arc guiding section is arranged between the second arc extinguishing device and the movable contact in the second direction,
the second arc running end portion of the first arc running piece and the first arc guiding section are arranged on opposite sides of the first arc extinguishing device in the second direction,
the fourth arc running end portion of the second arc running piece and the second arc guiding section are arranged on opposite sides of the second arc extinguishing device in the second direction,
the first movable contact portion and the first stationary contact portion are both flat surfaces, and a distance between the first arc running piece and the arc guiding piece is shortest in the first direction; in the first direction, the distance between the first arc running piece and the arc guiding piece is approximately equal to a distance between the first movable contact portion and the first stationary contact portion upon the movable contact being at the open position, and
the second movable contact portion and the second stationary contact portion are both flat surfaces, and a distance between the second arc running piece and the arc guiding piece is shortest in the first direction; in the first direction, the distance between the second arc running piece and the arc guiding piece is approximately equal to a distance between the second movable contact portion and the second stationary contact portion upon the movable contact being at the open position.