Phoenix Contact Gmbh + Co. Kg

Phoenix Contact Gmbh & Co.

Joachim Wosgien

Rainer Durth

Christian Depping

Martin Wetter

Michael Tegt

Christina Grewe

Joachim Schimanski

Markus Philipp

Philip Jungermann

Ralf Lange

Klaus Scheibe

Eberhard Lehmann

Martin Striewe

Jan-Erik Schmutz

Christian Birkholz

Karsten Trachte

Volker Danowsky

Christina Stohlmeyer

The invention relates to an overvoltage protection device with leakage current cutoff, having a parallel connection of a first current branch and a second current branch, wherein the first current branch comprises a switching element and a first non-linear resistor element, and the second current branch comprises a securing element with signaling properties and a second non-linear resistor element and a complex resistor. Dependent on a state modification of the securing element with signaling properties, said switching element is switched.

Overvoltage protection device with leakage current cut-off

The invention relates to a contact for a varistor (VAR), comprising a first feed element (ZL) which is suitable for connecting to a supply network, and a plurality of electrical connection points (V, V. . . VN) which are at a distance from one another and are suitable for making multiple connections to a pole of said varistor (VAR). The plurality of electrical connection points (V, V, . . . VN) and the first feed element (ZL) are electrically interconnected, and the plurality of electrical connection points (V, V, . . . VN) are each designed with fuse elements (F, F, . . . FN) such that local shorting of one part of the varistor (VAR) can be achieved by disconnecting the local electrical connection point (n) (V, V, . . . VN) in question.

Contact element for varistor

The invention relates to a fuse for connection to a protective component of an overvoltage protective device. A fuse wire runs between a first cap and a second cap. In some implementations, the fuse wire may be held on the first cap by means of a soldered connection and fastened to a connection electrode. The connection electrode may be movable with respect to a fuse body and under mechanical pretension with respect to a fuse body. The fuse wire melts when acted on with a high It, and the soldered connection melts upon external heating by the overvoltage protective device above a specified temperature by means of the thermal connection. Electrical contact between the first cap and the connection electrode is broken via the mechanical pretension if the fuse wire or the soldered connection melt.

Fuse

An overvoltage protection element is disclosed that includes a housing, connections for electrically connecting the overvoltage protection element to a current path or a signal path to be protected The overvoltage protection element further includes two varistors arranged inside the housing and electrically connected in parallel, and a center electrode arranged at least partially between the varistors. The housing has two housing halves made of metal and electrically connected to each other, wherein the center electrode is isolated from the housing halves and is electrically connected at the opposite sides of the electrode to a first connection area of a varistor and wherein the two varistors and the center electrode are sandwiched between the two housing halves. The overvoltage protection element includes an arrester between one terminal of the overvoltage protection element and the parallel connection of the two varistors.

Overvoltage protection element

An overvoltage protection element is disclosed that includes a housing, connections for electrically connecting the overvoltage protection element to a current path or a signal path to be protected The overvoltage protection element further includes two varistors arranged inside the housing and electrically connected in parallel, and a center electrode arranged at least partially between the varistors. The housing has two housing halves made of metal and electrically connected to each other, wherein the center electrode is isolated from the housing halves and is electrically connected at the opposite sides of the electrode to a first connection area of a varistor and wherein the two varistors and the center electrode are sandwiched between the two housing halves. One housing half is designed as a cover, which has a covering section and a recessed engagement section. In the installed states of the two housing halves, the engagement section engages in the corresponding receiving space formed by the other housing half and the covering section covers the receiving space, and in that the two housing halves are connected to each other such that in the installed state a visible gap is present between the two housing halves.

An overvoltage protection element having at least one overvoltage limiting component in a housing, terminal contacts for electrical connection of the overvoltage protection element to a path to be protected, an electrically conductive connecting element and with a spring system acting on the connecting element, a first terminal contact being directly connected with the first pole of the overvoltage limiting component, the connecting element being in electrically conductive contact with the second terminal contact and the second pole of the overvoltage limiting component via a thermally separating connection. With the thermal connection separated, the connecting element moves out of electrically conductive contact with the second terminal contact and the second pole of the overvoltage limiting component by the force of the spring system an insulating disconnecting element connected to the connecting element is moved between the second terminal contact and the second pole of the overvoltage limiting component.

An overvoltage protection element with a housing, with at least one overvoltage limiting component which is located in the housing, especially a varistor, with two terminal lugs which are each connected to a respective pole of the overvoltage limiting component in an electrically conductive manner, especially soldered or welded, and with two connecting elements for electrical connection of the overvoltage protection element to the current path or signal path to be protected. In the normal state of the overvoltage protection element, the connecting elements are each in electrically conductive contact with a respective terminal lug. The overvoltage protection element can be produced especially easily and economically by the first terminal lug and the first connecting element being integrally connected to one another and by the free end of the first connecting element which faces away from the overvoltage limiting component being made as a plug-in contact.

Surge protector

Surge protector with clamp

An overvoltage protection element () includes a housing (), two terminals () for electrical connection of the overvoltage protection element () to current or signal paths to be protected, and an arrester (), including a varistor, located within the housing (). In addition to providing a simple structure and installation, the overvoltage protection element () is especially well adapted to thermal and dynamic loads, so that no damage to the overvoltage protection element () occurs to the outside, wherein the housing () includes two metal shells () electrically connected to a terminal region () of the arrester ().

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.

Overload protection device

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.

Overvoltage protection device

Surge protection device

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).

Growing community of inventors

Löhne, Germany

Joachim Wosgien