What is Bus-Coupler?

A bus-coupler is basically a component that connects several bus bars together. And it has two uses. The bus coupler can be used to supply from the first bus bar by default. If it fails, it will disconnect from the first one and take supply from the second one. Here, the load will remain disconnected for a while. In this case, two bus bars will be isolated from each other by a bus coupler. And the bus coupler will connect both bus bars simultaneously. In case of failure of the first bus bar, the load is connected through the second bus bar. It will not stop the current even for a second. Thus, in any case, you can see that a bus coupler is used to combine multiple bus bars.

So, the concept of bus coupler is simple. It can either be used to connect multiple bus bars at once or to connect them only one at a time; It depends on the current usage and how long the load can withstand the power outage.