Multi-contact relay is a Relay and Switch to switch more circuits reliably in less space. The American company Olympic Controls Corp. produced a special so-called T-Bar multi-contact relay. T-Bar Switching Technology enables systems designers to produce equipment with freedom from the necessity of using multiple relays and switches where multi-circuit switching is required. It removes the constraint to design circuits using switching devices with no more than 4 or 6 poles. T-Bar Relays and Switches are for high reliable switching. They switch more circuits in less space. There are no other devices quite like them. T-Bar multi-contact relays are designed for use in controlled environments, such as test areas, computer control rooms, broadcast studios and network management centers. The heart of T-Bar components is the 12 pole-switching wafers. T-Bar Switching Technology is the solution to the problem of multi-circuit switching, whether it is gang switching, circuit selection or matrix switching. 