Medium voltage fuse supports, non-disconnecting, are used primarily in potential transformer circuits, or where there is some other disconnecting or isolating devices in series with the fuse in the circuit. It should be noted that disconnecting switches are not load-breaking devices. Therefore, the circuit must be open prior to the fuse disconnection. Select either a fuse support or a disconnecting switch for each fuse. Fuse supports and disconnecting switches include live parts for both ends. Both fuse supports and fuse disconnect switches can be mounted vertically or horizontally.