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Square D FSG2J21M4 30/50 Pressure Switch W/Lever

SKU: 3221

Save 59% · Retail: $50.24

  Available to Ship in 1-2 weeks

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About the Square D FSG2J21M4

Square D FSG2J21M4 30/50 Pressure Switch W/Lever. This Pressure Switch Valve signals pumps to start when the water system drops to a preset low pressure and stop at high pressure mark 30/50. If the pressure drops rapidly, the switch will automatically shut off the pump.

Product Details

Manufacturer: Clayton
Use: Water
Style: Switch
Mpn # FSG2J21M4
Shipping Dimensions 3.8" x 4.0" x 4.0"
Weight 0.92 lbs.

Product Features

  • Pressure Switch for water pumps
  • 5 to 65 psi
  • Diaphragm Actuation Type
  • Standard Action
  • Differential 15 to 30 psi
  • 1-1/2 HP @ 1 Phase - 120V, 2 HP @ 1 Phase - 230V, 3 HP @ 3 Phase


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Questions & Answers


You can actually order it here at It is currently in stock and should ship out quickly


Thank you for visiting For installation instructions, please call the manufacturer at 1-888-778-2733. For more details regarding this Square D FSG2J21M4 30/50 Pressure Switch with Lever, you may click here (manufacturer link no longer works).


Howdy! We appreciate your inquiry about our Square D FSG2J21M4 30/50 Pressure Switch with a Lever. The lever has auto and off positions. It is a disconnecting switch as well as a manual cut-out lever if the pressure drops below a certain point. If there is a break in the water line as it comes from the well to the pressure tank, the tank will lose all its pressure. The pressure regulator and the lever will shut off the power to the well pump due to pressure loss, otherwise, the pump will keep on trying to pressurize the tank with no success because of the break in the line going to the tank. But, you must briefly hold the lever down when putting water back into the tank without pressure (long enough for it to pressurize). We hope this helps. If you want to purchase this Square D FSG2J21M4, feel free to hit the "Add to Cart" button, enter your postal code and you'll be all set. Thank you for visiting Have a wonderful day!


Hello there! Thank you for trusting PlumbersStock to answer your question about the Square D FSG2J21M4 30/50 Pressure Switch. There are 4 contacts on that switch. Contacts 1 and 4 are for the power. Contacts 2 and 3 are for the motor. Let us know if you have further questions! Thank you for choosing - your one-stop online store for all your plumbing needs!

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