LCI-2 400V – three-phase pressure switch with nipple
The IBO LCI-2 is a mechanical pressure switch for 400 V three-phase pumps. It starts the pump when the water pressure drops to the set value and stops it when the upper threshold is reached. It is designed for installations with a more powerful pump supplied by a three-phase power network.
Who it is for
- Installers and electricians – the LCI-2 supports 400 V three-phase motors, making it suitable where standard single-phase pressure switches are not sufficient.
- Farm owners with a three-phase pump – the switch takes over control of a more powerful pump in the pressure-boosting system.
- Users of pressure-boosting systems – the device works with the pump and tank, automating pressure maintenance.
- Installations operating at higher pressure – the adjustment range reaches 8 bar.
Applications
The LCI-2 is used in water systems with a three-phase pump and pressure tank, both with surface pumps and submersible pumps. The switch starts the pump when the pressure drops and shuts it off after the system has been filled, so water is available without manually operating the pump. If necessary, it can also control a single-phase pump.
The device reads the pressure from the pipeline to which it is connected. In a three-phase pressure-boosting system, the LCI-2 400 V pressure switch ensures that the pump operates only within the specified pressure range.
Features of the LCI-2 switch
The LCI-2 operates using two thresholds: the pressure at which the pump starts and the pressure at which it stops. The factory settings are 2 bar and 4 bar, and both values are changed using two screws – the larger one controls the switch-off threshold, while the smaller one controls the switch-on threshold. The adjustment range is 2–8 bar; the pump should start at a minimum of 1 bar, and the shut-off pressure should not exceed 6 bar. A minimum difference of 1 bar must be maintained between the two thresholds; otherwise, the pump would start too frequently.
What distinguishes the LCI-2 from other switches in this group is its support for 400 V three-phase power. The IP44-rated housing protects the mechanism against splashing, which is important in utility rooms where unpredictable conditions may occur. The maximum current the device can handle is as high as 16 A, and it is connected to the installation using a ¼" thread.
- Brand: IBO
- Type: mechanical three-phase pressure switch
- Power supply: 3~400 V, 50 Hz
- Pressure range: 2–8 bar
- Maximum current: 16 A
- Protection rating: IP44
- Minimum threshold difference: 1 bar
- Connection: ¼" / ½ GW / GZ
IBO – 24-month (2-year) manufacturer's warranty.
Dambat – a trusted manufacturer of pumps and hydrotechnical equipment with quality certificates.
Frequently asked questions (FAQ) – LCI-2 switch
What is the LCI-2 pressure switch used for?
The LCI-2 is a mechanical pressure switch for three-phase pumps. It switches the pump on and off depending on the water pressure, allowing the pressure-boosting system to operate automatically without manually starting the pump.
Why is the LCI-2 suitable for three-phase pumps?
The LCI-2 switches a 400 V three-phase power circuit, which standard single-phase pressure switches cannot do. This makes it possible to control more powerful pumps used where water demand is higher. The device supports operating currents of up to 16 A.
Can the LCI-2 be connected to a single-phase pump?
Yes, the LCI-2 can also control a single-phase pump. In this configuration, a dedicated connection method using terminals is used. However, the device is primarily intended for three-phase installations.
How do you set the operating pressure in the LCI-2?
Two screws are used for this purpose: the larger one sets the switch-off pressure, while the smaller one sets the switch-on pressure. Tightening increases the pressure, while loosening decreases it. A difference of at least 1 bar must be maintained between the lower and upper thresholds.
What pressure range does the LCI-2 support?
The settings range from 2–8 bar, with factory settings of 2 bar for switching on and 4 bar for switching off. In practice, the pump should start at a minimum of 1 bar, and the shut-off pressure should not exceed 6 bar.
Where can you buy the LCI-2 pressure switch?
As the manufacturer, we do not sell directly. The IBO LCI-2 pressure switch can be purchased from our trade partners, installation wholesalers, and authorized online distributors. You can find the full range of switches and controllers in the controllers category.
What is the warranty for the LCI-2 pressure switch?
IBO – 24-month (2-year) manufacturer's warranty.
