Hybrid electrical switching device

Details Hybrid electrical switching device Hybrid electrical switching device

2008-03-04

2008-03-04

Sherry, Michael (Department: 2836)

Electrical transmission or interconnection systems

Switching systems

Repetitive make and break

Reexamination Certificate

active

10433462

ABSTRACT:
The invention relates to a hybrid electrical switching device, comprising an electromechanical relay including a mechanical switching element to be operated by an electrical coil, and a main semiconductor switching element including a control input and a current conduction path which is connected in parallel with the mechanical switching element for energizing an electric load. The main semiconductor switching element is of the type that ceases to conduct when a current through the current conduction path thereof drops below a threshold value. The circuit furthermore comprises an auxiliary semiconductor switching element including a control input and a current conduction path which is connected for controlling the main semiconductor switching element.

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