3 Level Liquid Level Control with Duty Cycling, 230V

The A-LLC3-M Liquid Level Control automatically alternates two pump relays between Duty and Standby operation at different liquid levels, using built-in flip-flop switching. It is suitable for electricians, pump installers and property/farm managers running dual-pump tank systems that need automatic duty cycling.

• Application: Dual-pump duty/standby control with automatic alternation
• Voltage: 230V
• Modes: Filling or Emptying, selected via 4 DIP switches
• Probes: Avanti AEL probes at High, Middle and Low levels

Key Features

• Controls 2 pump relays with automatic Duty/Standby alternation via built-in flip-flop action
• 4 DIP switches select Filling or Emptying operating mode
• 3 level inputs (High/Middle/Low) give finer control over dual-pump switching points
• Reduces uneven wear by automatically rotating which pump runs as duty

Typical Applications

• Dual-pump tank filling systems
• Dual-pump tank emptying/sump systems
• Farm and borehole water storage control
• Commercial water tank duty/standby control

Technical Specifications

What's Included

• 1 x A-LLC3-M 3 Level Liquid Level Control Relay

Please note: Avanti AEL level probes and pump contactors/wiring are not included unless specifically listed above.

Installation & Compatibility Notes

• Confirm you are using Avanti AEL probes — this relay is designed specifically for them.
• Set the DIP switches to Filling or Emptying mode to match your tank application before commissioning.
• Installation should be carried out by a suitably qualified electrician where required.

Warranty & Support

This product is supplied with the applicable manufacturer or supplier warranty, subject to correct installation, correct application, and warranty terms.

Zisabo supplies quality plumbing, pump, filtration and electrical products with practical support to help customers choose the correct item for their application. If you are unsure whether this product is suitable, contact us before ordering and our team will assist where possible.

Need help choosing? If you are unsure whether this product is suitable for your system, contact Zisabo with your application details, voltage, current rating, pin/base configuration or installation environment, and we will assist where possible.