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LIBERTY PUMPS Duplex Control Panel: Duplex, Single Phase, 120/208/240V AC, 0 to 14.9 A - Multi-Purpose Pump Control Panels
LIBERTY PUMPSMulti-Purpose Pump Control Panels

LIBERTY PUMPS Duplex Control Panel: Duplex, Single Phase, 120/208/240V AC, 0 to 14.9 A

The LIBERTY PUMPS Duplex Control Panel is a multi-purpose pump control panel designed for single-phase operation at 120/208/240V AC, supporting a current range of 0 to 14.9 A. It features a demand dose dosing…

SKU 3G-OTH-93206

Also listed as: AE21L43 · AE21L 4 3 · AE21L-4-3

Brand
LIBERTY PUMPS
Item
Duplex Control Panel: Duplex, Single Phase, 120/208/240V AC, 0 to 14.9 A
Category
Multi-Purpose Pump Control Panels
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

LIBERTY PUMPS
Manufacturer Part Number
AE21L=4-3
Type
Single Phase, 0 to 14.9 A, Tether Float
AC
120/208/240V
Current
0 to 14.9 A
Alert Output
Audio
Rated Voltage
120/208/240V AC
Dosing Schedule
Demand Dose
Intrinsic Safety
Not Specified Intrinsically Safe
Includes Reversing
Non-Reversing

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LIBERTY PUMPS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The LIBERTY PUMPS Duplex Control Panel is a multi-purpose pump control panel designed for single-phase operation at 120/208/240V AC, supporting a current range of 0 to 14.9 A. It features a demand dose dosing schedule, an audio alert output, and is non-reversing with intrinsic safety not specified. This panel is identified by manufacturer part number AE21L=4-3.

Frequently Asked Questions

What is the LIBERTY PUMPS Duplex Control Panel used for?

The LIBERTY PUMPS Duplex Control Panel is used to manage two pumps in alternating or lead-lag operation for wastewater, effluent, and dewatering applications. It provides demand dose control, audio alerts, and manual or automatic switching, making it suitable for residential and light commercial pumping systems.

What are the specifications of the LIBERTY PUMPS Duplex Control Panel?

The LIBERTY PUMPS Duplex Control Panel (MPN AE21L=4-3) operates on single-phase 120/208/240V AC, supports 0 to 14.9 A, and includes a tether float switch. It features a demand dose dosing schedule, non-reversing operation, and an audio alert output. Intrinsic safety is not specified.

Where to buy the LIBERTY PUMPS Duplex Control Panel worldwide?

You can source the LIBERTY PUMPS Duplex Control Panel through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this item.

How to install the LIBERTY PUMPS Duplex Control Panel?

Install the LIBERTY PUMPS Duplex Control Panel by mounting it in a dry, accessible location and connecting incoming power to the 120/208/240V AC terminals. Wire each pump per the diagram, attach the tether float switch for level control, and set the demand dose timer. Always follow local electrical codes and consult a licensed electrician.

Used in

Common applications for LIBERTY PUMPS
Municipal wastewater treatment — LIBERTY PUMPS Quadplex Control Panel (MPN QE34=6-511-3) for managing multiple pump stations
Commercial building sump management — LIBERTY PUMPS Duplex Control Panel (MPN AE34=3-621-5) for alternating pump operation
Residential sewage handling — LIBERTY PUMPS 41-gallon polyethylene basin (MPN K001132) for below-grade installations
Industrial effluent transfer — LIBERTY PUMPS Grinder Pump (MPN LSGH503MV-5) for solids reduction in high-flow applications
Emergency backup sump systems — LIBERTY PUMPS Battery Backup Sump Pump (MPN 442-10A-EYE) with Wi-Fi monitoring for flood prevention
Single-pump dewatering — LIBERTY PUMPS Simplex Control Panel (MPN SX24HC1=3) for small-scale water removal

LIBERTY PUMPS Products

3G Electric supplies LIBERTY PUMPS multi-purpose pump control panels. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
This multi-purpose pump control panel is designed for single-phase operation at 120/208/240V AC, supporting a current range of 0 to 14.9 A. It features a demand dose dosing schedule, non-reversing functionality, and an audio alert output. The panel includes a tether float switch and is suitable for managing pumps in wastewater, effluent, and dewatering applications
LIBERTY PUMPS
This multi-purpose pump control panel is designed for single-phase operation at 120/208/240V AC, supporting a current range of 0 to 14.9 A. It features a demand dose dosing schedule, non-reversing functionality, and an audio alert output. The panel includes a tether float switch and is suitable for managing pumps in wastewater, effluent, and dewatering applications
LIBERTY PUMPS Duplex Control Panel: Duplex, Single Phase, 120/208/240V AC, 0 to 14.9 A, Tether Float (MPN AE21L=4)
LIBERTY PUMPS
LIBERTY PUMPS Duplex Control Panel: Duplex, Single Phase, 120/208/240V AC, 0 to 14.9 A, Tether Float (MPN AE21L=4)
LIBERTY PUMPS Duplex Control Panel: Duplex, Single Phase, 120/208/240V AC, 0 to 14.9 A, Tether Float (MPN AE21L=4-5)
LIBERTY PUMPS
LIBERTY PUMPS Duplex Control Panel: Duplex, Single Phase, 120/208/240V AC, 0 to 14.9 A, Tether Float (MPN AE21L=4-5)
LIBERTY PUMPS Duplex Control Panel: Duplex, Single Phase, 120/208/240V AC, 0 to 14.9 A, Tether Float (MPN AE21L=3-5)
LIBERTY PUMPS
LIBERTY PUMPS Duplex Control Panel: Duplex, Single Phase, 120/208/240V AC, 0 to 14.9 A, Tether Float (MPN AE21L=3-5)
LIBERTY PUMPS Duplex Control Panel: Duplex, Single Phase, 120/208/240V AC, 0 to 14.9 A, Tether Float (MPN AE21L=3)
LIBERTY PUMPS
LIBERTY PUMPS Duplex Control Panel: Duplex, Single Phase, 120/208/240V AC, 0 to 14.9 A, Tether Float (MPN AE21L=3)
This multi-purpose pump control panel is designed for single-phase operation at 120/208/240V AC, supporting a current range of 0 to 14.9 A. It features a demand dose dosing schedule, non-reversing functionality, and an audio alert output. The panel includes a tether float switch and is suitable for controlling pumps in wastewater, effluent, or dewatering applications
LIBERTY PUMPS
This multi-purpose pump control panel is designed for single-phase operation at 120/208/240V AC, supporting a current range of 0 to 14.9 A. It features a demand dose dosing schedule, non-reversing functionality, and an audio alert output. The panel includes a tether float switch and is suitable for controlling pumps in wastewater, effluent, or dewatering applications

More from LIBERTY PUMPS

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This simplex control panel from LIBERTY PUMPS operates at 208/240/480V AC and supports 13 to 18 A. It includes a tether float switch, audio alert output, and demand dose dosing schedule. The panel is non-reversing and not specified as intrinsically safe. Suitable for controlling a single pump in wastewater, effluent, or dewatering applications
LIBERTY PUMPS
This simplex control panel from LIBERTY PUMPS operates at 208/240/480V AC and supports 13 to 18 A. It includes a tether float switch, audio alert output, and demand dose dosing schedule. The panel is non-reversing and not specified as intrinsically safe. Suitable for controlling a single pump in wastewater, effluent, or dewatering applications
This non-reversing simplex control panel operates at 208/240/480V AC with a current range of 4 to 6.3 A. It features a demand dose dosing schedule and a tether float switch for pump activation. The plastic enclosure includes an audio alert output. Suitable for controlling a single pump in wastewater, effluent, or dewatering applications
LIBERTY PUMPS
This non-reversing simplex control panel operates at 208/240/480V AC with a current range of 4 to 6.3 A. It features a demand dose dosing schedule and a tether float switch for pump activation. The plastic enclosure includes an audio alert output. Suitable for controlling a single pump in wastewater, effluent, or dewatering applications
This multi-purpose pump control panel is designed for outdoor use, managing a single pump in applications such as wastewater, effluent, or dewatering systems. It operates at 200V/230V with an 18.5 A current rating, features a visual alert output, and uses a demand dose dosing schedule with a tether float switch for automatic on/off operation based on liquid level. The panel is non-reversing and constructed with a plastic enclosure
LIBERTY PUMPS
This multi-purpose pump control panel is designed for outdoor use, managing a single pump in applications such as wastewater, effluent, or dewatering systems. It operates at 200V/230V with an 18.5 A current rating, features a visual alert output, and uses a demand dose dosing schedule with a tether float switch for automatic on/off operation based on liquid level. The panel is non-reversing and constructed with a plastic enclosure
Multi-purpose pump control panel for simplex pump systems. Operates at 208/240/480V AC, 13 to 18 A. Features demand dose dosing schedule, audio alert output, non-reversing, and tether float control. Suitable for wastewater, effluent, and dewatering applications
LIBERTY PUMPS
Multi-purpose pump control panel for simplex pump systems. Operates at 208/240/480V AC, 13 to 18 A. Features demand dose dosing schedule, audio alert output, non-reversing, and tether float control. Suitable for wastewater, effluent, and dewatering applications
This quadplex pump control panel from LIBERTY PUMPS operates at 208/230V AC with a current range of 9 to 14 A. It features a tether float switch and a visual alert output, housed in a plastic NEMA 4X enclosure. The panel uses a demand dose dosing schedule and is non-reversing. Suitable for sequencing up to four pumps in multi-pump installations
LIBERTY PUMPS
This quadplex pump control panel from LIBERTY PUMPS operates at 208/230V AC with a current range of 9 to 14 A. It features a tether float switch and a visual alert output, housed in a plastic NEMA 4X enclosure. The panel uses a demand dose dosing schedule and is non-reversing. Suitable for sequencing up to four pumps in multi-pump installations
Multi-purpose pump control panel for simplex pump systems. Operates at 120/208/240V AC, 15 to 20 A, non-reversing, with tether float switch and demand dose dosing schedule. Includes audio alert output for alarm conditions. Suitable for sump, sewage, and dewatering applications
LIBERTY PUMPS
Multi-purpose pump control panel for simplex pump systems. Operates at 120/208/240V AC, 15 to 20 A, non-reversing, with tether float switch and demand dose dosing schedule. Includes audio alert output for alarm conditions. Suitable for sump, sewage, and dewatering applications
This multi-purpose pump control panel is designed for duplex pump systems, alternating operation between two pumps to balance wear and provide backup. It operates at 208/240/480V AC, 17 to 23 A, and is non-reversing with a tether float switch. The panel includes an audio alert output and uses a demand dose dosing schedule. The plastic enclosure is suitable for indoor or protected outdoor installations in wastewater, sewage, and industrial fluid handling applications
LIBERTY PUMPS
This multi-purpose pump control panel is designed for duplex pump systems, alternating operation between two pumps to balance wear and provide backup. It operates at 208/240/480V AC, 17 to 23 A, and is non-reversing with a tether float switch. The panel includes an audio alert output and uses a demand dose dosing schedule. The plastic enclosure is suitable for indoor or protected outdoor installations in wastewater, sewage, and industrial fluid handling applications
Multi-purpose pump control panel for single-phase operation at 120/208/240V AC, 15 to 20 A. Features visual alert output, demand dose dosing schedule, and tether float control. Non-reversing design suitable for duplex pump sequencing in wastewater, effluent, or dewatering applications
LIBERTY PUMPS
Multi-purpose pump control panel for single-phase operation at 120/208/240V AC, 15 to 20 A. Features visual alert output, demand dose dosing schedule, and tether float control. Non-reversing design suitable for duplex pump sequencing in wastewater, effluent, or dewatering applications