Manufacturing for D20/200ME Substation Controllers have been discontinued. As an alternative, please refer to G500 or D20MX/D200MX.

Note: D20 I/O options will remain available for use with D20MX and G500 products.

The D20 substation controller offers an industry leading design embedded with high value substation automation applications that provide cost savings, increased reliability, and improved operational efficiencies in your substations. The D20 device acts as the gateway to SCADA master stations for IEDs in the station, or for downstream substations or feeders. A large protocol library facilitates communication to most existing substation devices for improved visibility and remote control. The distributed, expandable I/O architecture and mission-critical automation control applications reinforce why the D20 controller is being used in over 40,000 installations around the world.