G&W model PNI pad mount switches include load break and fault interrupting capability. 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 and 900A load break and continuous current, and 25kA symmetrical fault interrupting ratings. They feature compact footprints due to their front access construction.
The switches are designed to IEEE C37.72, C37.74, and C37.60 for load break and fault interrupting capability. The switches are designed per the guidelines of ASCE (American Society of Civil Engineers) standard 7-05 Chapter 13. These guidelines cover the design of non structural components installed in a building. The switches also underwent a test regime specified by ICC-ES-AC-156 (International Code Council Evaluation Services Acceptance Criteria) which specifies the shaker table test inputs applied to the switches.