The W-Series single phase, pole mounted auto recloser or circuit breaker was developed to achieve optimum performance and 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, a cyclo-aliphatic epoxy bushing is used to insulate the vacuum interrupter. 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. The W series recloser is ideal for Single Wire Earth Return (SWER) applications.

The W series is rated up to 24kV, rated load current 400A and rated interrupting current 6kA.