The AC Power Supply provides ac power for the Industrial Controls Training System. The outlet is fed from a three-phase, four-wire breaker panel supplied elsewhere. The power supply contains input and output pilot lamps, two "on-off" switches and dual sets of four color-coded banana jacks for three-phase voltage. All outputs are circuit-breaker protected. The AC Power Supply mounts on the upper shelf of the Mobile Workstation, Model 3103-4, and can provide power to both sides of the workstation.