March Pump LC-3CP-MD / Dometic PML500 Submersible A/C Pump 115V (510 GPH)

March Pump LC-3CP-MD / Dometic PML500 Submersible A/C Pump 115V (510 GPH)

March Pump LC-3CP-MD / Dometic PML500 Submersible A/C Pump 115V (510 GPH)

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The MARCH PUMP LC-3CP-MD is an American submersible seal-less centrifugal magnetic drive pump. 115V - 50/60HZ - 8.5GPM (490 GPH). Can be used submerged or not submerged. 3/4"FPT Inlet, 1/2"MPT Outlet. Rated up to 510 GPH (1930 LPH) flow and for heads up to 19 ft (4.3 m). Commonly used for marine air conditioning and fountains. Replacement for Dometic PML500 Pump (part number 225500005, 336183).

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MA LC-3CP-MD / PML500 115V


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MARCH PUMP LC-3CP-MD Mag-Drive Centrifugal Pump 115V / Replaces Dometic PML500 Pump

Dometic PML500

The March Pump LC-3CP-MD Mag-Drive Centrifugal Pump 115V is a centrifugal magnetic drive pump, eliminating the need for a shaft seal. Pumps are serviceable with a screwdriver. The “LC” is hermetically encapsulated and liquid cooled which allows the pump to be run fully submerged or in open air for complete moisture protection. Direct Replacement for Dometic PML500 Pump 115V, Part Number: 225500005, 336183

Features of March Pump LC-3CP-MD

  • Magnetic-drive impeller means no seal to wear, leak, or repair
  • Efficient motor with low power consumption
  • Exclusive marine-grade base is built to handle harsh marine conditions
  • Liquid-cooled (submersible)
  • All components in contact with water are plastic, ceramic, or stainless steel
  • High Capacity Centrifugal Pump


Motors are available in different electrical configurations such as 115 Volt 50/60 Hz, or 230 Volt 50/60 Hz, 1 phase. The motors are U.L. listed and rated as continuous duty. Models have a 6 foot (1.8 m) cord.

Limited Warranty

March pumps are guaranteed only against defects in workmanship or materials for a period of one year from date of manufacture pumping water. For the complete warranty and to register online go to

About the Dometic PML500

The March Pump LC-3CP-MD is a direct replacement for the Dometic PML500 pump (part number 336183). This Dometic pump provides a steady flow of cooling water throughout Dometic marine A/C systems. 


Part NumberLC-3CP-MD
Dometic EquivalentPML500 (225500005)
Max Flow8.5 GPM / 32.2 LPM
Max Head19 FT / 5.8 M
Max Internal Pressure25 psi / 172 kPa
Max Liquid Temperature130 °F / 54 °C
Power0.05 HP / 0.037 KW
Voltage115V 50/60Hz
Inlet3/4"FPT - 1/2” MPT
Dimensions (inches)4.87 x 4.75 x 7.38
Packed Weight (lbs)7.9
ApplicationsMarine air conditioning and fountains

March Pump LC-3CP-MD


March LC-3CP-MD Dimensions

Operation Notes 
Pumps are not self-priming, lack a suction lift, and thus require a flooded suction. Pumps cannot be run dry because the impeller requires the liquid being pumped for lubrication. For liquids with a specific gravity greater than water, have a higher viscosity, or for elevated temperatures, a trimmed impeller may be necessary. For further application assistance, please contact March Pump.




By on 03 Jan. 2022

class="review-name" itemprop="name">Perfect replacement for PML500 pump

Replaced my Dometic PML500 with this March pump. Identical.

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