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CU 300 Control Unit Box for Grundfos SQE Pumps

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RRP: $755.00
$509.95 (You save $245.05)
Calculated at checkout

 Product Description

Versatile Control Box

CU 300 is specially designed for the Grundfos SQE 3" submersible pump. The intelligent control box offers a wide flexibility for various system set-up or configurations.

The CU 300 is capable of control the pumps based on multiple sensor signals. At the same time, it could also monitor and display the system’s performance continuously whilst also providing a variety of protection features.

On top of the constant water pressure option, users can also choose to maintain a constant water level in the tank or reservoir. The versatile CU 300 control box offer the possibility of customizing the system control parameters to suit a specific application requirement.

Constant Water Pressure

As an advanced version of SQE control box, CU 300 can deliver the exact constant pressure control function as the CU 301 control box. The CU 300/SQE package is the system that can turn the luxury idea of constant pressure to reality. You can always get what you expect when you turn on the tap.

Customizable System Setup

By connecting to various sensors, the CU 300 can be used to setup the customized pumping system in order to deliver constant pressure or constant water level at tank or reservoir. The CU 300 box is not only suitable for domestic use or small irrigation systems; it is so flexible and versatile that it can also fulfil many small scale professional applications.

Simple Communication System

The communication between CU 300 and the pump system takes place via the power supply cable, called mains borne signalling, which means no extra cables to the pumps are needed. The communication of data is effected by means of a high-frequency signal superimposed on the power supply cable and led into the electronics unit.

Operation Auxiliary Relay

The auxiliary relay can be used to operate a external equipment, for instance to create a double pump operating system. By connecting two CU 300 control box through this auxiliary relay, it can create a master-slave two pump operation system.

Warning Setting

The CU 300 allows a siren call for each of the sensor and/or alarm setting. User can configures the control box to give a warning signal, before any specific parameters reached the alarm level, as preventive measures to avoid complete system stop.

Alarm Indication

The pump will detect and give the below alarm signals:

  • No contact to pump
  • Over-voltage
  • Under-voltage
  • Dry Running
  • Speed Reduction
  • Over Temperature
  • Overload
  • Sensor alarm


The CU 300 control box is available in 17 languages - Croatian, Czech, Danish, Dutch, English, English US, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Polish, Portuguese, Spanish and Swedish.

All CU 300 covers the voltage range of 1 x 100-240V – 10%/+6%, 50/60Hz, PE.



 Other Details

Professional, Standard

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