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Indoor Vacuum Circuit Breaker VD4
Indoor Vacuum Circuit Breaker VD4
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Last Updated
20 Mar 2021
Minimum Order
1 unit

Specification of Indoor Vacuum Circuit Breaker VD4

Vacuum Circuit Breakers are one of the contact breaker, a vacuum is used as a buffer against the arc, vacuum has a high insulation strength so it has advantages over using other media,
The principle works differently on the basis of other principles because they do not there is a gas that can ionize when contacts - open contact, when the contact breaker opened in a vacuum will arise spark arc, electron and ion current release despite the danger momentarily then quickly muted by a spark arc , electrons and ions generated at the time of termination will immediately condense in a vacuum, its ability is limited to approximately 30 kV. to a higher voltage breakers can be installed series. This vacuum circuit breaker is usually much in use in the underground system ACR (Automatic Circuit Recloser).

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