In various industries power supply distribution Panels are required to be provided with bump less change over. This Panel designed to transfer critical loads between two independent AC power sources without interruption or with a transfer time of less than a cycle (20ms). This panel used for very fast switching between electrical power sources. They perform instantaneous switching operations and thus supply immediate power to the load.

This happens in such a way, that when one of the power supplying elements fail to supply power to the load, they promptly switch towards the backup power source, so that large or over sensitive loads do not have to face any interruption in the power supply.

For this rapid switching operation, they use semi-conductor elements such as SCR’s i.e., silicon-controlled rectifiers to perform the shifting of load between two power sources.