Grundfos CU 301 control and communication unit for SQE pumps, 96436753

Grundfos CU 301 is a control and communication unit designed for Grundfos SQE borehole pump systems where constant water pressure is required. The unit controls pump operation according to the signal from a pressure sensor and helps maintain stable water delivery even when water consumption varies.

CU 301 is specially developed for Grundfos SQE pumps. Communication with the pump takes place via the power supply cable, so no additional communication cable is required between the control unit and the pump. The front panel includes buttons for pressure setting, on/off and reset, as well as LED indicators for operating status and alarm monitoring.

The unit is suitable for private houses, rural properties, borehole water supply and other systems using Grundfos SQE pumps where automatic, accurate and reliable constant pressure control is required.

Key benefits:

• Control and communication unit for Grundfos SQE pumps.
• Maintains constant pressure in the water supply system.
• Pressure control range: 2–5 bar.
• Two-way communication with the SQE pump.
• Communication via the pump power cable without extra signal wiring.
• Pressure setting via the front control buttons.
• Start, stop and reset via push button.
• LED indicators for operation and fault monitoring.
• Alarm indication for no contact with pump, voltage alarm, dry running, overload, overtemperature, sensor fault and other conditions.
• System monitoring and setting adjustment possible with Grundfos R100 / Grundfos GO Remote depending on system configuration.
• IP55 enclosure class.
• Suitable for professional SQE borehole water supply systems.

Technical information:

• Manufacturer: Grundfos
• Model: CU 301
• Product number: 96436753
• EAN: 5700393737235
• Unit type: control and communication unit
• Designed for pump series: Grundfos SQE
• Application: constant pressure control in SQE borehole pump systems
• Control range: 2–5 bar
• Control principle: pressure control based on sensor signal
• Pump communication: via power supply cable
• Additional communication cable to pump: not required
• Supply voltage: 1×100–240 V
• Voltage tolerance: -10 % / +6 %
• Frequency: 50/60 Hz
• Earthing: PE
• Power consumption: 5 W
• Maximum current consumption: 130 mA
• Maximum load: 100 mA
• Enclosure class: IP55
• Operating temperature: -30…+50 °C
• Storage temperature: -30…+60 °C
• Maximum relative air humidity: 95 %
• Maximum cable length between CU 301 and pump: 200 m
• Maximum back-up fuse: 16 A
• Indication: LED operation and alarm indicators
• Setting: via front control panel buttons
• Reset: from the control unit
• Remote / additional configuration: R100 or Grundfos GO Remote, depending on system configuration
• Certification / marking: CE
• Danish VVS No.: 388449701
• Norwegian NRF No.: 9041361
• Country of origin: Thailand
• Customs tariff: 85044095
• Weight: approx. 1.35 kg