As you can see in the photos this unit has been tested at full plus and minus 500 Vdc as well as full current to plus and minus 80mA. It comes with rack mount bars and hardware included but not in photos. The Kepco Model BOP 500M and BOP 1000M are high voltage power sources, up to 500V or 1000V, respectively. These combine the capabilities of fast programmable power supplies with a Class A output stage, which can respond bidirectionally from zero. The BOP-HV can be operated in either a “voltage stabilizing” or “current stabilizing” operating mode (selectable by a front panel switch).