G&W model VPNI vault switches include load break and fault interrupting capability. The fault interrupters provide electronically controlled, resettable over current protection in a totally sealed, submersible, 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 and 25kA symmetrical fault interrupting ratings. The VPNI is ideal for vault style applications because it features front accessible switch operators and bushings (front access) so it can fit within tight sub surface vaults or equipment rooms.
The switches are designed to IEEE C37.71, C37.74, and C37.60 for load break and fault interrupting capability.