Intelligent pump controller Model M521 is an easy to use, programmable controlling & protection device for direct start, single phase deep well submersible pump, centrifugal pump, pipeline pump etc with ouput power from 0.37-2.2KW.
Model S521 has many operation modes by adopting different electric installations. An important feature that makes the difference between model M521 and common on/off pump control box is the probe/sensor free in the well. Our special design make it a very reliable and sensitive protection against pump dry run without installation probe / sensor in the well.
Built in function switch Applied for water supply by liquid level control through float switch or liquid probe. Applied for water supply by pressure control through pressure switch and pressure tank. Applied for drainage by liquid level control through float switch or liquid probe. Computer main board and module for industrial and civil pump. Automatic stops the pump in the case of shortage, protecting it from dry runing without installing float switch or liquid probe in the well.
Auto/Manual switch Transient surge protection Over current (over load ) protection Over voltage protection Under voltage Protection Pump motor stalled protection Push button calibration LCD displays pump running information Integrated union design, small size, easy to install.