I want a switch to protect a pump from running empty. Do I want a switch that the contact closes on the rise so once the float raises the pump works

The best thing is to get a switch with a normally closed contact that feeds the starter. This way when the tank gets low, the float activates ( contact opens) and turns off the pump.

Tittle reads closes on rise while the manufacturer's description reads that it open on rise...So what does it do?

Typically, there is a float with a 3/16" rod, that extends through the hole in the trip arm that sticks out from the switch. This rod has collars with set screws, set at the high and low levels. As the liquid level rises, the collar on the rod pushes the trip arm upwards, which closes the switch and starts a pump. When the pump has.pumped enough liquid that the second collar on the rod, comes down and trips the arm down, which opens the switch and stops the pump.

So where does the rod go? Is that there but not pictured?

The rod is not pictured. The rod goes thru the hole in the lever sticking out the front. You also should have two stoppers, one goes on the rod above the lever and one on the rod below the lever. These will turn the pump on when the water gets too high and off when it is low enough.

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Description

💡 Elevate your fluid management game with precision and durability!

PLUG AND PLAY WIRING - 4 screw terminals and 3 conduit knockouts simplify integration
FLEXIBLE INSTALLATION - Floor mount ready with optional pedestal mounting for custom setups
VERSATILE COMPATIBILITY - Works seamlessly with water, hydraulic oils, and corrosive fluids
ROBUST NEMA 1 PROTECTION - Durable enclosure designed for commercial environments
RELIABLE FLUID LEVEL CONTROL - Activates pumps or signals exactly when fluid hits the mark

The Schneider Electric Square D 9036DG2 is a commercial-grade open tank float switch designed to reliably activate pumps or signal circuits when fluid levels rise. Compatible with water, hydraulic oils, and corrosive fluids, it features a NEMA 1 enclosure for protection, 4 screw terminals, and 3 conduit knockouts for easy installation. Its contacts close on liquid rise, ensuring precise and dependable operation in demanding environments.

Reviews

J**I

excellent

excellent, very good quality

17.05.2025

J**Y

Great replacement part

Fits perfect easy to install

9.11.2022

D**N

Switch comes in closed-when-lever-up config

Keep the long, reverse lever from your old switch, as this one comes in a closed-when-lever-up config, and you may need the reverse function. The switch does not come with the long reverse lever. If needed, change out the short lever to the long reverse lever and install switch accordingly.

15.06.2025

J**3

Fixed the well pump

Worked like it should. Happy the water is flowing again

17.07.2020

F**

Works great

Thank you

20.04.2021

J**R

Switch

If you want a switch that you don’t have to worry about this isn’t it

30.08.2023

K**

You Get What You Pay For.

It worked very well.

5.08.2019

L**S

Great replacement

Worked

13.01.2020

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TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

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VT30224

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

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Schneider Electric Square D by Schneider Electric 9036DG2 Commercial Open Tank Float Switch, Nema 1, Contacts Close On Rise, 3-1/2", Black

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