Emerson 02-790858-01 Rev 2 Transfer Relay Board

The Emerson 02-790858-01 Rev 2 Transfer Relay Board is a chassis-mounted PCB assembly that provides transfer relay and power-switching control for Liebert UPS and critical power systems. With a Manufacturer Part Number (MPN) 02-790858-01 and Rev 2, this transfer relay board is designed for repair, retrofit, expansion, or replacement of transfer relay and power control boards in Liebert and Emerson UPS equipment. It is commonly used in data centers, telecommunications facilities, server rooms, and industrial power installations where reliable power transfer and system redundancy are essential. Specifications include a Product Level (P/L) of 4, approximate weight of 8 lb, and origin from the United States or Mexico depending on production run; it is available in new, used, refurbished, and surplus units.