The U-Series three phase pole mounted auto recloser or circuit breaker was developed to achieve optimum performance & reliability, making use of the latest technology in solid dielectrics, vacuum interruption, and microelectronics. This device does not use any gas or oil insulants. Instead, cyclo-aliphatic epoxy bushings are used to insulate the vacuum interrupters. This type of construction results in a more lightweight unit. The design has been optimised for automation, remote control, and monitoring applications and has built in current and voltage measurement for data logging.