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Three phase pump protection
Underload protection by undercurrent
Suitable where the undercurrent (running without load) is critical, such us submersible pumps, surface pumps, etc. In these cases, when the equipments run without load (dry well) the relay trips by undercurrent.
The great advantage of the P relays is that, without requiring any external detectors like level electrodes, it monitors the load of the motor and stop it before a expensive breakdown occurs.

Without requiring level sensors to detect dry running

For three phase motors from 1 to 630 A and over. Cable feed through
Precise motor heating and memory, reproduces its thermal image
Visual indication of tripping cause

Some of the most common applications in domestic, industrial and agricultural installations are as follow:

•Submersible pumps: water supply, irrigation, well dewatering, petrol stations…
•Surface pumps: sewage treatment plants, swimming pools, pressure sets, fire-fighting equipment…
•Other typical applications that require monitoring: belt drives, ventilators, conveyor belts…

•Optional external module display
•Size of 22mm push button
•Mounted externally, on the panel door or a draw-out unit in a motor control centre (CCM)
•Connected to the relay by a flat cable L= 2 meters
•The module has the appropriate LED’s to signal the trip cause and a reset push-button.

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