Z-DEFENDER.3

Three-phase electronic control panel with protection and diagnostic

Z-DEFENDER.3 is an innovative electronic panel essential to start, run and protect the three-phase ZDS submersible pump against many possible installation and operation faults.
Z-DEFENDER.3 is designed to guarantee an optimal protection of the submersible pump against many possible installation and operation faults: an alarm will be shown on the dispaly in case of current overload, low voltage or high voltage, dry running, phase missing or phase imbalance; ensuring a high degree of automation and restoration.
Z-DEFENDER.3 allows to continuously detect and monitor in real time the power: the electrical parameters obtained are processed by a special software, which will efficiently guarantee the correct working conditions. With Z-DEFENDER.3, the submersible pump can work and be continuously protected also when the supply voltage values are at tolerance limit, providing the effectiveness of the protection operation. In addition, Z-DEFENDER.3, thanks to a “smart software” at variable time and automatic restart, can ensure the optimization of water withdrawal from the borehole or tank when the pump is dry running. Thanks to its special and innovative ZDS technology, Z-DEFENDER.3 combines, in a single device, protection, reliability and ease of installation.
 
Characteristics
  • LCD display for easy diagnostic of running parameters or eventual protections
  • Sounder alarm in the event of a fault and in stand-by
  • Low voltage input for floats or pressure switches
  • Protection against dry running and lack of water in the well
  • Current overload protection
  • Protection against low/high voltage
  • Phase sequence input control
  • Protection against failures in a three-phase plant

Send us a request


  • Casing: over-sized in ABS
  • Voltage range: 3x380-415 V +-10% 50 Hz
  • Power range: 0,37 - 2,2 kW
  • Degree of protection: IP 55
  • Standard: IEC 60439-1:2010
  • Rated ambient temperature: from -5°C to +40°C
  • Inputs: 1 input multi-contact float/pressure switch (NO) (in low voltage)
  • Over-sized terminal box: to help big size cables connections
  • Cable glands: 6 different sizes
  • Main switch: with door interlock to avoid involuntary accesses
  • Multifunction display: with electrical parameters/voltage/motor current/alarms
  • Contact output: for alarm
  • Protection fuses: included (1 for protection and 1 for electronic card)
  • Size (cm): 34 x 24 x 17
  • Weight: 1,5 Kg

Automatic protections

Dry-running protection

Dry-running protection

The control panel automatically stops the submersible pump showing an alarm on the display, to restart it after a programmed cycle time.

Protection against low/high voltage

Protection against low/high voltage

Avoid motor damages caused by too low or too high power supply voltages.

Current overload protection

Current overload protection

In case the submersible pump is partially or totally blocked, after some restart attempts it enters the stand-by mode.

Phase-loss protection

Phase-loss protection

The submersible pump is protected against phase-loss (caused by a brake of a fuse). The DRP protects the motor against damaging.

Protection against failures in a three-phase plant

Protection against failures in a three-phase plant

Z-Defender.3 will detect any faulty electric connection, protecting the motor from potential damage.

Download our catalogue

To download the version with prices please login or register.