---
product_id: 75843622
title: "FSG2J21M4CP 30/50 PSI Standard Pressure Switch with Low Pressure Cutoff"
brand: "square d"
price: "VT16183"
currency: VUV
in_stock: true
url: https://www.desertcart.vu/products/75843622-fsg2j21m4cp-30-50-psi-standard-pressure-switch-with-low-pressure
store_origin: VU
region: Vanuatu
---

# Low pressure cutoff for pump protection 1/4"-18 NPSF internal thread for seamless fit 30/50 PSI precision pressure control FSG2J21M4CP 30/50 PSI Standard Pressure Switch with Low Pressure Cutoff

**Brand:** square d
**Price:** VT16183
**Availability:** ✅ In Stock

## Summary

> 💧 Stay in control with precision pressure — never miss a drop!

## Quick Answers

- **What is this?** FSG2J21M4CP 30/50 PSI Standard Pressure Switch with Low Pressure Cutoff by square d
- **How much does it cost?** VT16183 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/75843622-fsg2j21m4cp-30-50-psi-standard-pressure-switch-with-low-pressure)

## Best For

- square d enthusiasts

## Why This Product

- Trusted square d brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pump Protection:** Built-in low pressure cutoff safeguards your pump from damage and extends its lifespan
- • **Universal Compatibility:** Designed for submersible well pumps and standard water-supply systems with easy 1/4"-18 NPSF threading
- • **Compact & Durable Design:** Lightweight 14.4 oz plastic housing with a sleek triangle shape fits discreetly on any wall mount
- • **Trusted Brand Reliability:** Square D quality ensures dependable operation and peace of mind with included warranty
- • **Precision Pressure Control:** Automatically activates between 30 and 50 PSI for optimal water system performance

## Overview

The Square D FSG2J21M4CP is a compact, electric pressure switch engineered for water-supply systems and submersible well pumps. Featuring a precise activation range of 30 to 50 PSI and a low pressure cutoff, it protects your pump while ensuring consistent water flow. Its 1/4"-18 NPSF internal thread allows easy installation, making it a reliable replacement or upgrade backed by Square D's trusted warranty.

## Description

Square D FSG2J21M4CP 30/50 PSI Standard Pressure Switch with Low Pressure Cutoff

## Features

- For use with water-supply systems
- 1/4" - 18 NPSF internal thread opening
- Turns on at 30 psi and off at 50 psi
- For use with submersible well pumps or as a replacement switch
- For electrically driven water pumps

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Square D |
| Part Number | FSG2J21M4CP |
| Item Weight | 14.4 ounces |
| Product Dimensions | 2.78 x 3.76 x 2.8 inches |
| Item model number | FSG2J21M4CP |
| Is Discontinued By Manufacturer | No |
| Size | No Size |
| Color | Grey |
| Style | Submersible |
| Material | Plastic |
| Shape | Triangle |
| Power Source | Electric |
| Item Package Quantity | 1 |
| Switch Type | not_applicable |
| Mounting Type | Wall Mount |
| Switch Style | ?Pressure Switch |
| Included Components | Square D FSG2J21M4CP 30/50 PSI Standard Pressure Switch with Low Pressure Cutoff |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Warranty |

## Images

![FSG2J21M4CP 30/50 PSI Standard Pressure Switch with Low Pressure Cutoff - Image 1](https://m.media-amazon.com/images/I/71sC8l8aTLL.jpg)

## Frequently Bought Together

- Square D FSG2J21M4CP 30/50 PSI Standard Pressure Switch with Low Pressure Cutoff
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- SENCTRL 100 Psi Lead-Free Glycerin Liquid Filled Low Pressure Gauge, 2.5" Dial Size, 1/4" NPT Lower Mount, Stainless Steel Case, for Home Potable Water Pump, Air, Well, RV Hose, Pressure Test

---

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**Shop now:** [https://www.desertcart.vu/products/75843622-fsg2j21m4cp-30-50-psi-standard-pressure-switch-with-low-pressure](https://www.desertcart.vu/products/75843622-fsg2j21m4cp-30-50-psi-standard-pressure-switch-with-low-pressure)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-06-09*