Abstract: An arc chamber for a circuit breaker has first and second mounting bodies. The mounting bodies are disposed at the ends of an electrically insulating insulation section of the arc chamber. The insulation section is formed of at least two shell-shaped partial sections. The partial sections are curved concavely relative to a longitudinal axis of the arc chamber. A gap is formed between the edges of the bodies of the partial sections.

Abstract: An arc chamber for a circuit breaker has first and second mounting bodies. The mounting bodies are disposed at the ends of an electrically insulating insulation section of the arc chamber. The insulation section is formed of at least two shell-shaped partial sections. The partial sections are curved concavely relative to a longitudinal axis of the arc chamber. A gap is formed between the edges of the bodies of the partial sections.

Abstract: A first contact piece and a second contact piece interact to give a contact configuration. The second contact piece is singled-sided and can be reversibly deformed. In order to increase the contact pressure of the second contact piece onto the first contact piece, an additional pressure element is provided. The pressure element generates contact pressure acting upon the second contact piece via a deflecting device.

Abstract: A first contact piece and a second contact piece interact to give a contact configuration. The second contact piece is singled-sided and can be reversibly deformed. In order to increase the contact pressure of the second contact piece onto the first contact piece, an additional pressure element is provided. The pressure element generates contact pressure acting upon the second contact piece via a deflecting device.

Abstract: According to the invention, heat generated inside a vacuum interrupter (1) is to be extracted, essentially by means of the pins (7, 8) of the contact pieces (5, 6) and, in order to improve the transmission of heat, a first slide contact surface (18) of a slide contact arrangement is provided on a pin (7), whereby the first slide contact surface (18) is arranged on a first section of a pin (7) which comprises an enlarged circumference relative to the remaining sections of the pin (7).

Abstract: According to the invention, heat generated inside a vacuum interrupter (1) is to be extracted, essentially by means of the pins (7, 8) of the contact pieces (5, 6) and, in order to improve the transmission of heat, a first slide contact surface (18) of a slide contact arrangement is provided on a pin (7), whereby the first slide contact surface (18) is arranged on a first section of a pin (7) which comprises an enlarged circumference relative to the remaining sections of the pin (7).

Abstract: A magnetic linear drive has a coil in whose interior the current can produce a magnetic flux in an axial directions, having an armature which can move only at right angles to the axial direction and which has a magnetically active part which is magnetized, in particular, parallel to, but in the opposite direction to, the axial direction. The armature is driven by a current surge which accelerates the magnetically active part toward the coil center irrespective of its initial position.

Abstract: The aim of the invention is to improve the interrupting capacity of a vacuum switch, to achieve this, the contact parts (4, 5) that can be displaced in relation to each other are separated at a variable speed. Separation takes place in such a way that during a predetermined time period a predetermined distance between the contacts is not exceeded. To prevent said predetermined distance from being exceeded, a braking element is allocated to the vacuum circuit breaker.

Abstract: The invention concerns an open air high-voltage circuit breaker comprising a circuit breaker unit (13) and a control capacitor connected electrically in parallel to it and surrounded by a common composite isolation housing (7, 8) made essentially of plastic, resting a terminal column (1) fixed to one of its ends. The use of a composite isolation housing saves cost and weight at the upper end of the terminal column and also improves earthquake security.

Abstract: To reduce overvoltages when switching high-voltage circuit breakers, particularly when connecting unloaded overhead lines, closing resistors are used which, during closing of the breaker, are connected in parallel relationship with the main switching gap of the circuit breaker by means of an auxiliary switching gap. After the main switching gap is closed, the closing resistor is disconnected by opening the auxiliary switching gap before the main gap opens and keeping the auxiliary gap open until the main switching gap is reclosed. For this purpose, the high-voltage circuit breaker includes a movable auxiliary contact pin which is spring loaded in the opening direction of the auxiliary switching gap, and a connecting rod which is linked to the auxiliary contact pin and is connected, hinged, to a rotatably supported crank drive of the drive unit of the breaker.