My current switch is loud and it turns on and off every 30 seconds when water is running. Is that normal, a plumber suggested I could have water tank issue.

Here's how I handled this... shut off and drain well line (or relieve pressure in system). There is a cap/plug usually at the top of the tank with a tire valve. Use a tire pressure gauge to make sure that it is only a couple PSI lower than the low number on your switch. i.e. for a 40/60, you want about 35-38 PSI. Turn water back on and pressurize system. Pump should run less frequently. If it takes months/years until it starts constantly running, then you are okay. If it starts running constantly right away, then you may need a new tank. I am not a plumber, so please get a second opinion :)

The contacts are sparking?

Only after extended use, the contacts can become dirty. If you are sparking with a brand new unit either the in-rush current is extremely high or you have low pressure on the pressure tank. The bladder needs to have sufficient pressure to activate the pressure switch firmly without sparking. Rule of thumb is 3psi above the cut-in pressure. See video below; https://www.youtube.com/watch?v=bA-X6vRlDc0

What is the difference between Form U and any other Form?

What do you meand ' form D"? The reason I use this one is that it has a lever on the side that allows me to turn pump on when it drops below set low. The auto ones don't work with my well setup.

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Telemecanique sensors FSG2J24M4CP 40-60 PSI Pumptrol Water Pressure Switch with Low Pressure Cut-Off

Product ID: 2401512

Details

Operation Mode
automatic
Operating Voltage
230 Volts
Contact Type
Normally Open
Connector Type
Wire Leads
Brand
Schneider
Switch Type
Pressure

💧40-60 PSI low pressure cut-off

🔧1/4-inch NPSF internal thread

⚙️220 PSI max pressure

$94.12

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Description

💧 Stay in control, never run dry – pressure perfected.

EASY INSTALLATION - Standard 1/4-inch NPSF internal thread fits seamlessly into existing plumbing setups.
ROBUST DURABILITY - Engineered to withstand up to 220 PSI, ensuring long-lasting performance under pressure.
COMPACT EFFICIENT - Lightweight 14 oz design with wall-mount capability for space-saving integration.
TRUSTED BRAND QUALITY - From Schneider Electric’s Telemecanique Sensors line, a leader in industrial-grade components.
PRECISION PRESSURE CONTROL - Maintain optimal water pressure with a reliable 40-60 PSI cut-off range.

The Telemecanique Sensors FSG2J24M4CP is a high-performance water pressure switch designed for electrically driven pumps. Featuring a diaphragm actuator, it offers precise pressure control with a low pressure cut-off between 40-60 PSI and a maximum pressure tolerance of 220 PSI. Its 1/4-inch NPSF internal thread ensures easy installation, while its compact, wall-mount design and Schneider Electric’s trusted engineering make it a reliable choice for professional-grade water system management.

Specifications

ASIN	B000FKBY8W
Best Sellers Rank	#20,572 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #6 in Pressure Switches
Brand Name	Schneider Electric
Current Rating	12 Amps
Customer Reviews	4.4 4.4 out of 5 stars (1,408)
Global Trade Identification Number	00047569177828, 00784497765641
Included Components	Square D by Schneider Electric FSG2J24M4CP 40-60 PSI Pumptrol Water Pressure Switch with Low Pressure Cut-Off
Item Dimensions	8 x 6 x 4 inches
Item Type Name	Square D by Schneider Electric FSG2J24M4CP 40-60 PSI Pumptrol Water Pressure Switch with Low Pressure Cut-Off
Item Weight	14.08 ounces
Manufacturer	Telemecanique Sensors
Material Type	Plastic
Model	FSG2J24M4CP
Mounting Type	Wall Mount
Part Number	FSG2J24M4CP
Smart Home Compatibility	Not Smart Home Compatible
Specific Uses For Product	specific_uses_for_product
Specification Met	Ip54
Style Name	Diaphragm
UPC	784497765641 047569177828
Unit Count	1.0 Count
Warranty Description	Warranty

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