Proven performance of High Impedance Differential for
optimum speed and selectivity.Available in single phase or three phase configurations to
allow space and cost benefits. Fully drawout, testable in case design, compatible with
existing panel mount configurationsCT Circuit Diagnostic function and Steady State Unbalance
alarm to verify external wiring and prevent misoperation.  Includes an intentional 20msec delay timer that can be inserted in the trip logic to aid in coordination when the bus is
tapped with high speed fuses.