LX Pump 56WUA400A-II 4.0 HP 2 SPD 230V 12/4.4A 2.5" Side Discharge
The 56WUA400A-II is a 4 HP, 2-Speed, 230V Spa Pump designed for spa systems.
LX Pump 4.0 HP 2 SPD 230V 12/4.4A 2.5" Side Discharge, 56WUA400A‑II, is a large‑frame, two‑speed 4.0 HP spa therapy pump with 230V power, 12.0/4.4A draw, and 2.5" center‑suction/side‑discharge unions designed for high‑flow hot tub and swim‑spa applications.
Features
- 2-Speed Operation: It offers both high-speed for powerful massage and low-speed for efficient filtration.
- 230V Voltage: It operates on a 230V power supply.
- 2-Inch Plumbing Connections: It has 2-inch side discharge and center suction connections for optimal performance.
- Baseless Design: This version does not have mounting feet and requires a separate bracket for installation (Bracket sold separately - Part number: 6000-535).
- High Performance: Provides a powerful and reliable water flow, ensuring a quiet and effective spa experience.
Core Specs
- Model: LX 56WUA400A‑II large‑frame pump.
- Horsepower: 4.0 HP (high‑output therapy pump).
- Voltage / Amperage: 230V; about 12.0A on high speed and 4.4A on low speed.
- Speeds: 2‑speed (high and low), for strong therapy jets on high and quieter circulation/filtration on low.
- Frame: 56‑frame motor, larger and heavier than 48‑frame circ pumps.
Plumbing and Dimensions
- Connections: 2.5" MBT (male buttress threads) suction and 2.5" MBT side discharge; actual union thread OD about 3⅝" x 3⅝".
- Many listings clarify the pump is for 2½" plumbing on both suction and discharge, even though some spa documentation refers to “2 inch” nominal lines.
- Typical overall pump body dimensions are around 16" length x 9" height x 8" width (varies slightly by housing).
- The pump is set up with center suction and side discharge, which is the common configuration in many 4 HP spa packs.
Use Case and Performance
This LX 4.0 HP 2‑speed pump is intended as a primary therapy/jet pump, not a small circulation pump. Flow rates can reach well over 200 GPM in low‑head spa plumbing, with some sources listing up to ~267 GPM maximum on similar 56WUA400A‑II models. The 2‑speed design allows spas to use the same motor for vigorous jet action on high speed and gentler filtration or heating on low speed.
Compatibility Notes
- Designed for spas that already use a 4.0 HP, 230V 2‑speed 56‑frame pump and 2½" unions.
- You can generally replace another 2‑speed pump with this unit, but you cannot substitute a single‑speed pump where the control system expects 2 speeds.
- Always match voltage, amperage, frame size, union size, and cord/plug style to the existing pump and spa control pack.
Confidence Buying from EZ Pool & Spa Supply
Ordering the LX Pump 4.0 HP 2 SPD 230V 12/4.4A 2.5" Side Discharge, 56WUA400A‑II from EZ Pool & Spa Supply at eztestpools.com gets you a clearly specified OEM LX pump described as a 4 HP, 2‑speed, 230V unit with 2.5" intake and 2"–2.5" side discharge connections and the proper 12/4.4A ratings. Their listing matches other technical sources on horsepower, voltage, amperage, frame, and plumbing size, helping you verify that it’s the correct replacement therapy pump for your spa before you purchase.
