Zoeller M63 Submersible Sump Pump 3/10 HP
- 0.3 horsepower, 115 volts
- 43 gpm flow rate
- Cast iron body, stainless steel hardware
- Float operated, vortex impeller
- LED power plug, factory tested
- 5 year warranty
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A cast iron submersible sump pump with an automatic float switch, aimed at basement pits. The listing gives no discharge size or lift figure, so check fit before buying.
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ASIN: B01N43YTWOModel: M63Category: Sump Pumps
Overview
Zoeller builds this Mighty-Mate pump with a cast iron housing, stainless steel hardware and a vortex impeller. A float switch turns it on as the water rises, and an LED on the power plug shows when it has power.
Automatic float operation and a heavy cast iron body are the reason to choose it for a basement pit. The limitation is that discharge size and head height are not in the listing.
Who it's for
Owners of basements with groundwater seepage get an automatic pump with a long warranty. Sewage systems and deep wells need pumps designed for those jobs.
Pros and cons
- Cast iron body
- Float switch runs automatically
- Stainless steel hardware
- LED shows power at the plug
- Discharge size not listed
- Head height not listed
- Product only, no check valve
- Heavy to handle
Performance notes
A float rises with the water in the pit and closes the switch, which starts the pump without a user. A vortex impeller moves water with some solids passing through without clogging the way a closed impeller can. Flow falls as the height of the discharge rise increases, and the listing gives flow without a lift reference.
Where it stands among sump pumps
- #5 most-searched brand and model of the 18 sump pumps lines we track (by search demand, not sales).
From the specs of the 38 sump pumps we list; not a test result.
Specifications
| Brand | Zoeller |
|---|---|
| Model | M63 |
| Dimensions & fit | |
| Item Dimensions L X W X H | 10.25 inches L x 7.75 inches W x 10.25 inches H |
| Item weight | 10 pounds |
| Capacity & performance | |
| Flow Rate | 43 gpmlower than 59% of 23 sump pumps |
| Power & efficiency | |
| Horsepower | 0.3 |
| Power Source | AC |
| Voltage | 115 volts |
| Construction & materials | |
| Material Type | Cast Iron |
| Color | Color |
| Included components | |
| Included Components | Product only |
| Unit Count | 1 Count |
| Other details | |
| Product Style | Premium Series |
| Item Highlight | LED Power Plug, High Flow, Vortex Impeller, Stainless Steel Hardware, Factory Tested, Float Operated |
| Eu Spare Part Availability Duration | 5 years |
Closest rivals on specs
WAYNE WaterBUG Submersible Utility Pump 1/6 HP- Horsepower 0.3 vs 0.17 hp (+76%)
- Flow Rate 43 vs 23 gpm (+87%)
Frequently asked questions
How should I care for the Zoeller M63 sump pump?
The listing gives no maintenance schedule. It lists a cast iron body and stainless steel hardware, so follow the manufacturer's instructions.
Does the Zoeller M63 switch on by itself?
Yes. The title lists it as an automatic, float operated pump.
Is the Zoeller M63 a sewage pump?
The listing describes a submersible sump pump and does not describe sewage use.