Phoenix Contact Gmbh + Co. Kg

Gernot Finis

Rainer Durth

Thomas Meyer

Christian Depping

Martin Wetter

Ernst-Dieter Wilkening

Ralf Lange

Steffen Pfoertner

Martin Striewe

Christian Birkholz

Andreas Metzger

Andreas Christ

Joachim Cerny

Mario Stolzenberg

Björn Bünsow

Sven Behnke

The invention relates to a protection ensemble, comprising

Protection ensemble

The invention disclosure relates to a space-limited protection module with at least two overvoltage protection elements in parallel current branches, where the protection module includes a local multistage indicator for indicating at least one operating state, a warning state and a defect state, and where the parallel switched overvoltage protection elements are arranged on a circuit board in electrical connection to conductor tracks of the circuit board and attached in a thermally softenable manner.

Space-limited protection module with at least two overvoltage protection elements in parallel current branches

An overvoltage protection element with a housing, an overvoltage-limiting component arranged in the housing, and with two connection elements for electrically connecting the overvoltage protection element to the current or signal path to be protected, wherein, normally, the connection elements are each in electrical contact with a pole of the overvoltage-limiting component. Reliable and effective electrical connection in the normal state and reliable isolation of a defective overvoltage-limiting component are ensured by the fact that a thermally expandable material is arranged within the housing in a way that, in the event of thermal overloading of the overvoltage-limiting component, the position of the overvoltage-limiting component is changed by expansion of the thermally expandable material relative to the position of the connection elements in a way that causes at least one pole of the overvoltage-limiting component to be out of electrical contact with the corresponding connection element.

Overvoltage protection element

An overvoltage protection element with a housing, an overvoltage-limiting component arranged in the housing, and with two connection elements for electrically connecting the overvoltage protection element to the current or signal path to be protected, wherein, normally, the connection elements are each in electrically conductive contact with a pole of the overvoltage-limiting component. Reliable and effective electrical connection in the normal state and reliable isolation of a defective overvoltage-limiting component are ensured by the fact that a thermally expandable material is arranged within the housing in a way that, in the event of thermal overloading of the overvoltage-limiting component, the position of the overvoltage-limiting component is changed by expansion of the thermally expandable material relative to the position of the connection elements in a way that causes at least one pole of the overvoltage-limiting component to be out of electrically conductive contact with the corresponding connection element.

The subject matter of the invention is a device for diverting surge currents or transient overvoltages (), with a switching stage () and a switching element (). The switching stage () is so designed as to switch on the switching element () upon identification of an overvoltage or a surge current. The switching element () is a reversible semiconductor switching element, while the switch-on event is achieved by operating of the switching element () outside of the specified parameters.

Device for diverting surge currents or transient overvoltages

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Kassel, Germany

Gernot Finis