switching device

Abstract

The invention relates to a switching device, in particular an electric power switch, for the safety of electric circuits, which has two pole connections and a switching mechanism for automatically separating the two pole connections in the event of an overload Electrical connection, additionally having an electrical component for adjusting the switching device (10), and an electrode box in which the switching mechanism is arranged in a switching chamber, the electrode box having at least one gas channel , the at least one gas channel is connected in gas communication with the switching chamber and is designed to deliver gas from the electrode cartridge past the electrical component to the surroundings.

Description

technical field [0001] The invention relates to a switching device, in particular an electric power switch, for the safety of electrical circuits. Background technique [0002] Such switching devices are known in principle. It is intended to be used as a fuse for an electrical circuit in order to separate the pole connections of the switching device from each other in the event of an overload. The separation of the electrical connection serves to avoid damage to components or devices arranged in the circuit. For this purpose, known switching devices often have a switching mechanism which is designed to be rotatable. The rotatable switching arm of such a switching mechanism can connect and disconnect a fixed contact with a movable contact. Often a redundant embodiment is provided, so that the arms on both sides with respect to an axis of rotation can be connected as moving contacts to the corresponding two fixed contacts. [0003] A disadvantage of the known switching dev...

AI Technical Summary

Problems solved by technology

However, in the case of known switching devices, as they are disclosed for example by US 6,480,082 B1, the protection of the electrical components of said switching devices is not disclosed.

There is therefore essentially the risk that no or only badly discharged gases lead to contamination in the interior of the switching chamber, in particular in the region of electrical components.

If, for example, a channel is provided in the surrounding housing of the switching device, then the sealing of the surrounding housing channel with respect to the switching chamber must be carried out as a rated breaking point in the case of high switching pressures such that the risk, i.e., that the gas in turn contaminates the electrical components used to regulate the switching device

Since the contamination is at least electrically conductive contamination, undesired short-circuit situations in these electrical components and thus damage or even destruction of the switching device occur in this way.

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