Square D FSG2J21CP Pressure Switch 30/50 Psi

Product Description

The SQUARE D FSG2J21CP is a standard pressure switch rated for 30/50 PSI cut-in and cut-out operation, designed for electrically driven water pump systems. It monitors system pressure and cycles the pump motor on at 30 PSI and off at 50 PSI, maintaining consistent water pressure in the distribution system. The switch features a 1/4 inch - 18 NPSF internal thread inlet connection for direct mounting to a pressure tank tee or pump discharge fitting. Plumbers and pump service technicians install this switch on residential and light commercial water supply systems as a direct OEM-style replacement or new installation component.

This pressure switch is intended for use on electrically driven water pump systems, including jet pumps and submersible pump installations with a standard pressure tank setup. The 30/50 PSI differential range is one of the most common configurations in residential water well systems. It is sold in a package quantity of 5 units, making it suitable for service companies stocking multiple units for routine replacement calls.

Key Features

• 30 PSI cut-in and 50 PSI cut-out operating range for standard residential water pressure
• 1/4 inch - 18 NPSF internal thread inlet for direct connection to pump or tank tee fittings
• Designed specifically for electrically driven water pump applications
• Package quantity of 5 units per package for efficient service van stocking

Compatibility

Designed as an OEM-style replacement pressure switch for electrically driven residential and light commercial water pump systems requiring a 30/50 PSI switching range.

Installation Notes

Installation should be performed by a licensed plumber or pump technician. Shut off all electrical power to the pump circuit at the breaker before removing or installing the pressure switch, and relieve system pressure before disconnecting any fittings. The switch mounts to the pressure tank tee or pump discharge line using the 1/4 inch - 18 NPSF threaded inlet. Follow applicable local plumbing codes and NEC requirements for wiring connections inside the switch enclosure.

Technical Specifications

• Cut-In Pressure: 30 psi
• Cut-Out Pressure: 50 psi
• Inlet Thread: 1/4 inch - 18 NPSF internal thread
• Application: Electrically driven water pumps
• Package Quantity: 5 units
• Weight: 5.5 pounds

Standard Information

• Brand: SQUARE D
• Manufacturer Part Number: FSG2J21CP