The BK Precision 9117 Programmable Multi-Range DC Power Supply, 80V/120A, 3000W automatically recalculates voltage and current limits for each setting, providing full output power in any Volt/Amp combination within the rated voltage and current limits. The numerical keypad allows direct data entry along with convenient cursors and analog style knobs to quickly make incremental voltage or current changes. The 9117 comes with built-in OVP (overvoltage protection), OTP (overtemperature protection), and OLP (overload protection) circuitry. These protections help prevent serious damage to equipment in case of power supply failure.