US 12,482,617 B2
Circuit breaker
Raimund Summer, Regensburg (DE)
Assigned to Schneider Electric Industries SAS, Rueil-Malmaison (FR)
Filed by Schneider Electric Industries SAS, Rueil-Malmaison (FR)
Filed on Jul. 31, 2023, as Appl. No. 18/228,186.
Claims priority of application No. 102022119447.7 (DE), filed on Aug. 3, 2022.
Prior Publication US 2024/0047158 A1, Feb. 8, 2024
Int. Cl. H01H 33/662 (2006.01); H01H 33/664 (2006.01)
CPC H01H 33/66207 (2013.01) [H01H 33/66238 (2013.01); H01H 33/664 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A circuit breaker comprising:
at least one vacuum chamber that has a longitudinal axis, a fixed and a movable contact, said movable contact being acted on by an environmental pressure of the vacuum chamber, and
a drive mechanism for moving the movable contact between an open position and a closed position,
wherein the movable contact is connected to at least one counter-pressure element outside the vacuum chamber, said counter-pressure element being a movable component of a compensating reservoir that is pressure-tight sealed and that has an inner pressure,
wherein the vacuum chamber and the counter-pressure element are arranged in a gas-insulated compartment, and
wherein the inner pressure in the compensating reservoir is smaller than an inner pressure in the gas-insulated compartment.