Star delta control panel for three-phase electric pumps


Stardelta electromechanical control panel.


Electrical panels suitable for starting centrifugal pumps or pumping systems for boosting pressure with surface pumps (boosters).



General technical features

  • Power supply 3~50/60 Hz 400V ±10%;

  • Transformer 24 Vac for auxiliary circuit;

  • Auxiliaries contacts and circuits in low voltage;

  • Blue led indicating mains supply;

  • Normally open contact for start;

  • Normally open contact for minimum level/pressure contact;

  • Selector for Auto-Off-Manual (stable) operation:

    • Manual: direct operation without controls;

    • Automatic: operation controlled by min input and start input;

  • Green led indicating motor running;

  • Red led indicating motor overload;

  • Line, star and delta contactors in AC3;

  • Overload thermal relay internally restorable;

  • Adjustable star/delta timer.

  • Auxiliaries and motor protection fuses;

  • Isolator;

  • Enclosure in ABS up to 11KW, metallic box from 15KW,

  • Ambient temperature: -5/+40 °C;

  • Relative humidity 50% at 40 °C (not condensed).




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More info?

You can ask us for information or a quote to find out the discounted price dedicated to you.


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Star-delta starting type

Star-delta starting is the best known and perhaps the most widely used of the reduced voltage starting methods.
It is used to start the pump motor, reducing mechanical stresses and limiting the currents during start-up, all through a timed system that allows the switching of the control contactors installed inside the panel.

stardelta (Grande).jpg


Star delta starting reduces the starting current and torque to values ​​equal to 33% (1/3) of those found in a direct starting. During the starting phases, the components are affected by currents lower than the rated current of the motor.


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The range of STARDELTA electrical panels is offered as standard with a plastic box in ABS up to 11 kW, for higher powers the box is metallic.
A series of accessories are available to customize your panel and enrich it with more controls and functions.




Comparison table

Quadri adatti

Stardelta 1

Control panels with stardelta start for 1 pump/motor

Stardelta 2

Control panels with stardelta start for 2 pumps/motors

Stardelta 3

Control panels with stardelta start for 3 pumps/motors



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