DDC's Data Bus relays are double pole single throw (2P1T) devices which act as on-off bus switches to disconnect individual RT's or entire bus segments from a bus network without having to physically disconnect the cables. The DBR1000 and DBR2000 Series of bus switching relays are designed for use in the test and simulation of MIL-STD-1553 data buses. They are particularly useful in reconfiguring bus systems.