Model 520CP is a fully programmable, microprocessor-based, current sensing device designed to monitor three phase pumps or systems with ramp up times of 4 seconds or less. Applications include submersible pumps, booster pumps, reverse osmosis systems, centrifugal pumps, vertical turbine pumps, oil well pumps, and chemical pumps.

Three external current transformers must be utilized in conjunction with the Model 520CP. The following 9 parameters can be set and viewed from the three digit alphanumeric LED: over current trip point, under current trip point, current unbalance trip point, trip delay, rapid cycle timer (RD1), over load restart delay (RD2), under load restart delay (RD3), number of starts after an over load, and number of restarts after an under load fault. Last fault diagnostics is also viewable. When a harmful condition is detected, the MotorSaver's output relay is deactivated after the specified trip delay. The output relay reactivates after the appropriate RD2 or RD3 timer has expired. If the pump is started on a single phase or a reverse phase condition, the Model 520CP deactivates its output relay in 0.5 seconds.

The Model 520CP can be ordered with an output jack so that the unit can utilize a Model 520RD front panel remote display.