Free Shipping on Orders over 99$

Duplex Pump Control (AE-Series, Model AE21L=3)


Provides reliable alternating operation of two pumps with automatic override control in residential or commercial installations.  Common applications include sump basins, effluent or sewage pump chambers and lift stations.  Available in 3-float or 4-float configurations and NEMA1 (indoor) and NEMA4X (outdoor) enclosures.  All panels must be ordered with the proper amp rating matching the pump.  See the AE-series specifications or consult Liberty Pumps for ordering assistance.

Out of stock

SKU: 8715 Categories: , ,
  • Magnetic motor contactors
  • HOA switches (internal)
  • Green pump run indicators (internal)
  • Control ON/OFF switch (internal)
  • Control/Alarm power-on indicator (internal)
  • Circuit breakers
  • Easy wiring terminal blocks
  • Visual and audible alarm
  • Auxiliary Contacts
  • Includes three pilot-duty floats
Weight 24 lbs
Cord Lenght



Installation Manual AE-Series



There are no reviews yet.

Be the first to review “Duplex Pump Control (AE-Series, Model AE21L=3)”

Your email address will not be published. Required fields are marked *

Installation Manual AE-Series
Download PDF