The TP-250P has an operating mechanism, namely three CTs for each phase, and 6 VT sensors for each phase on each side. Has an indicator to check the status of SF6 gas (low or not), so this device has high operational stability. This type also has a mechanical handle to close and open the switch and a position indicator to show the contact position.

There is a manual locking lever (handle lock) that functions to prevent or prohibit mechanical control (close/open) either remotely or locally, which can only be controlled by the user to block the operation. So that all control and system operation can be protected.