Transfer switch is an electrical device that switches load between two power sources either mechanically or electrically. Transfer switches are able to provide quick transition between two or more power sources for an uninterrupted power supply if any of the power sources fails. Transfer switches are utilized in various industrial and residential establishments for uninterrupted power supply. Although, the market for transfer switches is relatively mature, technological innovations such as automatic mode has further improved its usage practicality. Recently transfer switches are coming as permanent part of the control panel and makes switching more easy and safer. Unexpected brownouts and voltage fluctuation, outages, blackouts, and weather uncertainties have fuel the demand for reliable power transmission, which in turn propel transfer switch market widely. Further, growing dependence on power and critical application in industries, commercial institutions, healthcar...