Flights to St. Thomas and St. John. Enjoy a magnificent trip to St. Thomas and St. John, two islands that promise to provide a seaside paradise for you to revel in throughout your vacation.
A Relay Rack is a 2-post aluminum or steel structure with either EIA standard (round) mounting holes or universal (square) mounting holes. Relay Racks are also known as 2-Post Racks or Open Bay Racks. The vertical holes spacing on Relay Racks are standardized for mounting Telco, or computer / network equipment.
A mercury relay (mercury displacement relay, mercury contactor) is a relay that uses mercury as the switching element.They are used as high-current switches or contactors, where contact erosion from constant cycling would be a problem for conventional relay contacts.he mercury relay thus allows for switching of higher currents with a small control current for a large number of cycles. They are often installed into automatic controllers that required extended periods of unattended continuous switching operation.