Abstract: An overvoltage protection device for protection of low voltage electrical installations, has a device base part with terminals for phase conductors and ground or neutral conductors and at least one overvoltage protection element, with at least one arrester which is located in a housing. The base part of the device has at least one telecommunications contact which has a switch for remote indication of the state of at least one overvoltage protection element, the base part of the device having plug contacts which are connected to the terminals, and the overvoltage protection element having corresponding connector contacts so that the overvoltage protection element can be plugged onto the base part of the device. The overvoltage protection device is improved by the overvoltage protection element having an optical status display and the optical status display and the switch of the telecommunications contact being actuated via a common mechanical actuating system.

Abstract: A surge protection device includes a first electrode and a second electrode. An air breakdown spark gap is between the second and first electrodes, an arc being formed upon an ignition of the air breakdown spark gap. A series arrangement of a potential dividing element and an ignition element is connected to the first and second electrodes.

Abstract: A surge protection device includes a first electrode and a second electrode. An air breakdown spark gap is between the second and first electrodes, an arc being formed upon an ignition of the air breakdown spark gap. A series arrangement of a potential dividing element and an ignition element is connected to the first and second electrodes.

Abstract: An overvoltage protection device for protection of low voltage electrical installations, has a device base part with terminals for phase conductors and ground or neutral conductors and at least one overvoltage protection element, with at least one arrester which is located in a housing. The base part of the device has at least one telecommunications contact which has a switch for remote indication of the state of at least one overvoltage protection element, the base part of the device having plug contacts which are connected to the terminals, and the overvoltage protection element having corresponding connector contacts so that the overvoltage protection element can be plugged onto the base part of the device. The overvoltage protection device is improved by the overvoltage protection element having an optical status display and the optical status display and the switch of the telecommunications contact being actuated via a common mechanical actuating system.

Abstract: An overvoltage protection device includes two electrodes and an air breakdown spark gap between the electrodes. Also provided is a housing for the electrodes. An arc occurs in the air breakdown spark gap upon an ignition of the gap. An impedance is connected in parallel with the air breakdown spark gap so as to form a parallel arrangement. An insulating gap is connected in series with the parallel arrangement.

Abstract: A surge protection device includes a first electrode and a second electrode. An air breakdown spark gap is between the second and first electrodes, an arc being formed upon an ignition of the air breakdown spark gap. A series arrangement of a potential dividing element and an ignition element is connected to the first and second electrodes.

Abstract: An overvoltage protection means is described, with a first electrode (1), with a second electrode (2), with an air breakdown spark gap (3) which is present or which acts between the electrodes (1, 2), and with a housing which holds the electrodes (1, 2), when the air breakdown spark gap (3) is initiated an arc (4) forming between the first electrode (1) and the second electrode (2) As claimed in the invention, an overvoltage protection means is devised which is characterized by high line follow current extinguishing capacity, but which nevertheless can be implemented with a simple structure, by the fact that a third electrode (5) is assigned to the first electrode (1) and the second electrode (2) and between the first electrode (1) and the third electrode (5) a second air breakdown spark gap (6) is present or active, that the third electrode (5) is connected via at least one impedance, especially a varistor (7), directly or indirectly to the second electrode (2), and that after discharging the surge current

Abstract: An over-voltage protection element for limiting transient over-voltages and for discharging transient currents which includes at least two electrodes defining a spark gap in which an arc is formed when the over-voltage protection element is initiated. Each of the electrodes is composed of a conductive ceramic material.

Abstract: An overvoltage protection means is described, with a first electrode (1), with a second electrode (2), with an air breakdown spark gap (3) which is present or which acts between the electrodes (1, 2), and with a housing which holds the electrodes (1, 2), when the air breakdown spark gap (3) is initiated an arc (4) forming between the first electrode (1) and the second electrode (2).

Abstract: An overvoltage protection system with an overvoltage protection element (1) and an ignition aid which triggers the overvoltage protection element (1), the overvoltage protection element (1) having two main electrodes (2, 3) and an air-breakdown spark gap (4) which acts between the main electrodes (2, 3). An overvoltage protection system having a relatively small and also largely constant operating voltage is implemented by there being an ignition circuit (5) with an ignition voltage output (6) as the ignition aid, the overvoltage protection element (1) having an ignition spark gap (7) which acts between the main electrodes (2, 3) with at least one ignition electrode (8) and the ignition electrode (8) being connected to the ignition voltage output (6) of the ignition circuit (5).