Harris GP 401 General Purpose Regulator Select Your Regulator:401 250 580 C and CD studs ranging from Cobra MX HD and CD studs ranging from 14 gauge up to 5 16" full flanged stainless steel studs A RUGGED MULTI PROCESS POWER SOURCE FOR MAXIMUM FLEXIBILITY Simple Streamlined operator panel minimizes setup time Plug in to any 380 575V 3 phase power Easy process selection Reliable Built on industry proven design elements of other popular Lincoln welders Components designed to run cool for long life in high temperature environments Fully encapsulated and environmentally protected electronics Engineered for outdoor use and harsh environments (IP23 rated) Flexible Compatible with across the arc brass dual scale gauges (psi bar) Model GP 401 is not recommended for high purity applications that may be sensitive to contamination due to elastomeric components