As a proven solution in corrosive environments and submersible applications, G&W Electric model TNI padmount switches include load break and fault interrupting capability with visible break and integral ground position on each way. This eliminates the need to handle any high voltage connections to ground the cable. The high voltage connections are positioned on the opposite side of the switch operators to further isolate the operator from high voltage. The fault interrupters provide electronically controlled, resettable over current protection in a totally sealed, dead front device. The switches are designed for use on 3-phase systems with voltages up to 38kV, 630A load break, and continuous current, with 12.5kA, 20kA, and 25kA symmetrical fault interrupting ratings.
The switches are designed to IEEE C37.72, C37.74, and C37.60 for load break and fault interrupting capability. Padmount enclosures are designed and tested to IEEE C57.12.28 and C57.12.29.