A circuit breaker including a stationary frame, at least a pair of arc contacts, an actuation rod, a compression chamber in which a portion of the dielectric gas is compressed; a cylinder and a piston connected with the rod, which are movable within the stationary frame along main axis, for compressing the portion of the dielectric gas in the compression chamber; a link mechanism connecting the piston to the rod, wherein the stationary frame includes a cylindrical portion with which each of the piston and of the cylinder are radially in gastight contact and which bounds the compression chamber together with the piston and the cylinder.

Electric high-voltage circuit breaker (10) comprising a primary chamber (12) and a compression chamber (14), wherein said circuit breaker (10) further comprises a valve (100) configured to control a fluid flow (F; F1a, F1b, F2a, F2b) between said primary chamber (12) and said compression chamber (14), wherein said valve (100) comprises a valve body (110), a first valve plate (120) that is arranged axially movable with respect to said valve body (110), and a second valve plate (130) that is arranged between and movable with respect to said valve body (110) and said first valve plate (120), wherein said first valve plate comprises at least one opening (122a, 122b, 122c) enabling fluid flow through said first valve plate (120), wherein a first surface (110a) of said valve body (110) forms a valve seat (VS1a, VS1b) for said first valve plate (120), and wherein a first surface (120a) of said first valve plate (120) forms a valve seat (VS2a, VS2b) for said second valve plate (130).

Electric high-voltage circuit breaker (10) comprising a primary chamber (12) and a compression chamber (14), wherein said circuit breaker (10) further comprises a valve (100) configured to control a fluid flow (F; F1a, F1b, F2a, F2b) between said primary chamber (12) and said compression chamber (14), wherein said valve (100) comprises a valve body (110), a first valve plate (120) that is arranged axially movable with respect to said valve body (110), and a second valve plate (130) that is arranged between and movable with respect to said valve body (110) and said first valve plate (120), wherein said first valve plate comprises at least one opening (122a, 122b, 122c) enabling fluid flow through said first valve plate (120), wherein a first surface (110a) of said valve body (110) forms a valve seat (VS1a, VS1b) for said first valve plate (120), and wherein a first surface (120a) of said first valve plate (120) forms a valve seat (VS2a, VS2b) for said second valve plate (130).

The present invention relates to a device for interrupting non-short circuit currents only, and in particular relates to a disconnector, more particularly high voltage disconnector, or to an earthing switch, more particularly make-proof earthing switch, and further relates to a low voltage circuit breaker. The device comprises at least two contacts movable in relation to each other between a closed state and an open state and defining an arcing region, in which an arc is generated during a current interrupting operation and in which an arc-quenching medium comprising an organofluorine compound is present. According to the application, a counter-arcing component is allocated to the arcing region, the counter-arcing component being designed for counteracting the generation of an arc and/or being designed for supporting the extinction of an arc.

The present invention relates to a device for interrupting non-short circuit currents only, and in particular relates to a disconnector, more particularly high voltage disconnector, or to an earthing switch, more particularly make-proof earthing switch, and further relates to a low voltage circuit breaker. The device comprises at least two contacts movable in relation to each other between a closed state and an open state and defining an arcing region, in which an arc is generated during a current interrupting operation and in which an arc-quenching medium comprising an organofluorine compound is present. According to the application, a counter-arcing component is allocated to the arcing region, the counter-arcing component being designed for counteracting the generation of an arc and/or being designed for supporting the extinction of an arc.

The present invention relates to a device for interrupting non-short circuit currents only, and in particular relates to a disconnector, more particularly high voltage disconnector, or to an earthing switch, more particularly make-proof earthing switch, and further relates to a low voltage circuit breaker. The device comprises at least two contacts movable in relation to each other between a closed state and an open state and defining an arcing region, in which an arc is generated during a current interrupting operation and in which an arc-quenching medium comprising an organofluorine compound is present. According to the application, a counter-arcing component is allocated to the arcing region, the counter-arcing component being designed for counteracting the generation of an arc and/or being designed for supporting the extinction of an arc.

The present invention relates to a device for interrupting non-short circuit currents only, and in particular relates to a disconnector, more particularly high voltage disconnector, or to an earthing switch, more particularly make-proof earthing switch, and further relates to a low voltage circuit breaker. The device comprises at least two contacts movable in relation to each other between a closed state and an open state and defining an arcing region, in which an arc is generated during a current interrupting operation and in which an arc-quenching medium comprising an organofluorine compound is present. According to the application, a counter-arcing component is allocated to the arcing region, the counter-arcing component being designed for counteracting the generation of an arc and/or being designed for supporting the extinction of an arc.

A separating wall for dividing a heating volume of a power circuit into a first sub-volume and a second sub-volume. The separating wall is formed with at least one wall opening which allows a flow of gas between the sub-volumes. The wall opening has an aerodynamically active opening surface based on a pressure difference between a pressure in the first sub-volume and a pressure in the second sub-volume.

A separating wall for dividing a heating volume of a power circuit into a first sub-volume and a second sub-volume. The separating wall is formed with at least one wall opening which allows a flow of gas between the sub-volumes. The wall opening has an aerodynamically active opening surface based on a pressure difference between a pressure in the first sub-volume and a pressure in the second sub-volume.

A circuit breaker including a stationary frame, at least a pair of arc contacts, an actuation rod, a compression chamber in which a portion of the dielectric gas is compressed; a cylinder and a piston connected with the rod, which are movable within the stationary frame along main axis, for compressing the portion of the dielectric gas in the compression chamber; a link mechanism connecting the piston to the rod, wherein the stationary frame includes a cylindrical portion with which each of the piston and of the cylinder are radially in gastight contact and which bounds the compression chamber together with the piston and the cylinder.