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Home » Zoeller Sump Pump M-53 1/3 HP

The Top Choice for basement sumps, the 3/10 HP Model M53 automatic Sump Pump is designed to remove groundwater from basement sump applications.  Backed by a 3-year warranty, this corrosion resistant pump will provide the dependability expected from a Zoeller pump. Every pump is submerged in water and tested to its published performance curve, ensuring it meets your expectations and delivers peace of mind right-out-of-the-box.


For a professional-grade submersible pump used for effluent or dewatering, turn to this Zoeller 53-0001 M53 automatic sump pump. This sump pump features a durable, cast iron constructed switch case, motor, and pump housing with a corrosion-resistant, powder-coated epoxy finish and an engineered thermoplastic plastic base. This M53 model has an engineered glass-filled plastic impeller with a metal insert as well as a stainless steel guard and handle. Plus, there's no sheet metal parts that will rust or corrode.

This sump pump is submersible and hermetically sealed with an automatic reset thermal overload protected motor. This automatic model includes a float-operated 2-pole mechanical switch. It also features cast iron upper and lower sleeve bearings running in a bath of oil as well as a carbon and ceramic shaft seal. Powered by a 3/10 hp motor, this sump pump has a 1 1/2" NPT discharge, a max flow rate of 43 GPM, and oil filled cooling. It requires a 115V electrical connection for operation.



The fully automatic Model M53 is designed to remove unwanted groundwater in basement sump applications. The professional-grade, 3/10 HP M53 is the industry standard when it comes to primary sump pumps.  Known as the “Mighty-Mate” M53, it is a fully automatic float-operated sump pump.  The white polypropylene float is solid so it cannot become waterlogged.  This ensures that it is always buoyant and able to turn the pump on when necessary.

The Model 53’s switch case, motor housing, and pump housing are each constructed of cast iron. The corrosion resistant engineered plastic vortex impeller has a smooth surface allowing water and solids to pass freely through the pump. The pump’s identification tag, float guard, handle, switch arm, and hardware are made of non-corrodible stainless steel. This attention to detail ensures that the Model 53 is able to withstand the most demanding basement sump applications.


  • Oil-filled motor and cast iron motor housing for optimal heat dissipation which prevents the pump from overheating
  • Automatic pump with a time-tested, reliable, preset, built-in snap action switch that makes for easy installation
  • Corrosion resistant engineered plastic vortex impeller to allow free passage of solids which prevents clogging and lessens downtime
  • Stainless steel float guard that prevents material or debris from collecting on the float ensuring proper operation every time
  • Solid, buoyant, polypropylene float to eliminate the possibility of water infiltration allowing the float to remain buoyant and functional at all times
  • Powder-coated epoxy finish provides corrosion-resistance and extends the life of the pump in harsh environments
  • Stainless steel screws, switch arm, guard, handle and hardware to prevent rust and corrosion over the life of the pump
  • 100% Factory Tested - every pump is submerged in water and tested at the factory to ensure that it performs as expected when you receive it
  • Comes with a 3-year limited warranty giving you protection over your investment and the peace of mind you expect in a quality product




23 lbs


Height 10 1/4 in   x   Width 7 3/4 in   x   Length 10 1/4 in.


3/10 HP


115 V




60 Hz




1-1/2" NPT

Solids Handling:

1/2" (12 mm) spherical solids

On/Off Points:

7-1/4" (18.4 cm) / 3" (7.6 cm)

Impeller Material:

Engineered plastic

Impeller Type:


Cord Length:

9’ (2.7 m)


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