LX 56WUA400-II spa pump - 4 HP, 230 V, 2 speeds

The LX 56WUA400-II spa pump is a two-speed 4 HP pump designed for residential spa jet, circulation, and filtration systems.

Powered by 230 V, it operates at 12 A at high speed and 4.4 A at low speed. Its 56 Frame motor and 2 in fittings make it a replacement option for several comparably sized spa pumps. Lingxiao also confirms an operating speed of 3450 RPM at high speed and 1725 RPM at low speed.

Key Features

• Brand: LX / Lingxiao
• Model: 56WUA400-II
• Rated power: 4 HP
• 2-speed motor
• Power supply: 220-240 V / 60 Hz
• High speed: 12 A / 3450 RPM
• Low speed: 4.4 A / 1725 RPM
• Motor frame: 56 Frame
• Inlet: 2 in
• Outlet: 2 in
• Side outlet
• Copper motor windings
• Built-in thermal protection
• 2 in union fittings included
• UL, CUL, and ETL certifications
• 1-year limited warranty
• Power cord not included

Two Speeds Suited to Spa Operation

The low speed can be used for circulation and filtration cycles, while the high speed provides the flow required when the jets demand more power.

Replacement and Compatibility

The LX 56WUA400-II is specifically listed as a replacement solution for certain configurations using the following part numbers:

• Aqua-Flo XP2e: 05334012-2040
• Waterway Executive 56: 3721621-1D
• Sundance / Jacuzzi: 6500-352
• Sundance / Jacuzzi: 6500-367

Important: compatibility should not be determined solely by the spa brand or horsepower rating. Pool & Hot Tub Depot notes in particular that, compared with a Waterway Executive 56, the LX has a similar footprint, but the fitting positions may be slightly lower and require plumbing modifications.

I would therefore remove the lengthy claim from your listing that it is “compatible with Sundance, Jacuzzi, Hot Spring, Catalina, LA Spas, Cal Spas, Viking, Artesian, Trevi, Dynasty, Elite, Hydropool, Coleman”. A spa brand may use several very different pumps depending on the model and year.

Check Before Ordering

Compare it with the existing pump:

• the model number;
• the 230 V voltage;
• the 12/4.4 A current;
• the 56 frame;
• the 2 in fittings;
• the outlet orientation;
• the plumbing dimensions and alignment.

Package Contents

• 1 LX 56WUA400-II pump
• 2 2 in union fittings
• O-rings
• Installation and wiring manual