--- product_id: 18096854 title: "SQUARE D 30-50 M4 Low Pressure Cut-Off Switch WATER WELL PUMP TANK PROTECTION 9013FSG2J21M4" brand: "pumptrol" price: "£49.04" currency: GBP in_stock: true reviews_count: 8 category: "Pumptrol" url: https://www.desertcart.co.uk/products/18096854-square-d-30-50-m4-low-pressure-cut-off-switch store_origin: GB region: United Kingdom --- # Low pressure cut-off for pump protection Manual reset lever for safety control Pre-set pressure range 30-50 PSI SQUARE D 30-50 M4 Low Pressure Cut-Off Switch WATER WELL PUMP TANK PROTECTION 9013FSG2J21M4 **Brand:** pumptrol **Price:** £49.04 **Availability:** ✅ In Stock ## Summary > 💧 Protect your pump, save your wallet — the smart switch every well owner needs! ## Quick Answers - **What is this?** SQUARE D 30-50 M4 Low Pressure Cut-Off Switch WATER WELL PUMP TANK PROTECTION 9013FSG2J21M4 by pumptrol - **How much does it cost?** £49.04 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/18096854-square-d-30-50-m4-low-pressure-cut-off-switch) ## Best For - pumptrol enthusiasts ## Why This Product - Trusted pumptrol brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Manual Reset Lever:** Easy-to-use reset lever gives you full control to restart safely after a low-pressure shutdown. - • **Pump-Saving Safety:** Automatic low-pressure cut-off prevents costly pump damage when water runs low—your well’s best guardian. - • **Compact & Durable Design:** Lightweight plastic housing (under 1 lb) fits seamlessly into any well pump system without hassle. - • **Precision Pressure Control:** Pre-set ON at 30 PSI and OFF at 50 PSI ensures optimal pump cycling without guesswork. - • **Trusted Schneider Electric Quality:** Built by industry leader Schneider Electric, combining durability with reliable performance. ## Overview The SQUARE D 30-50 M4 Low Pressure Cut-Off Switch (Model 9013FSG2J21M4) by Schneider Electric is a precision-engineered device designed to protect water well pumps from damage caused by low water pressure. Pre-set to activate at 30 PSI and deactivate at 50 PSI, it features a manual reset lever for added safety control. Compact and durable, this switch ensures reliable pump operation and longevity, making it an essential upgrade for any well system. ## Description This purchase includes the following: (1) brand new M4 Pressure switch MODEL # 9013FSG2J24M4 PRE-SET ON 40 OFF 60 GENUINE SQUARE D BRAND DESIGNED TO PROTECT YOUR PUMP SHOULD IT RUN OUT OF WATER Brand: Square D Pre-set ON 40psi OFF 60psi... Can be adjusted to 30/50 also or any combination between 40/60 and 30/50.... This switch has a LOW PRESSURE CUT OUT to protect your pump. This means you will have to manually restart the pump via the little lever on the side of this switch whenever the pressure at the switch falls 10PSI below the cut in pressure. Review: Both Square D and Telemecanique are part of Schneider Electric. The switch is the same regardless. - This is a preliminary review. The switch appears to be fine, and the reset lever operates as it should. I have not installed it yet. In the off chance it doesn't work I will definitely edit this review. Of course the real test is if it continues to work for several years. Also, our switches have failed due to sediment getting into them, which of course is not their fault. The photo on the listing page (above) shows a *Square D* switch. What I received is a "Telemecanique." Both the listing photo and the switch I received do say "Pumptrol" so they probably are the same, but the listing photo should match the product being sold. I found this with a Google search: "Both Square D and Telemecanique are part of Schneider Electric. Schneider Electric has integrated some of the Square D sensor products, specifically limit, pressure, and float switches, under the Telemecanique Sensors brand." After doing that search I found an insert that says basically the same thing. At least one or two reviews mention that the terminal and ground screws (6 total) were extremely tight. That was the case with the switch I received also. They would not budge with a screwdriver so I put the switch in a vice and used a Phillips bit in a 1/4" socket on a 1/4" drive ratchet. The screws broke loose easily then. Review: One of those items you don't know you need until you know the trouble you're in without it... - I bought this item in fully rebuilding my well after the jet pump assembly absolutely ruined the entire setup because it didn't have one of these on it to begin with. If it had one of these, I would have saved about $1000. Highly highly recommend one of these with a safety shut off for low/no pressure. This item is a high quality unit at a good price. Would definitely use this exact unit on any job going forward. Functions as intended and will definitely be a pump saver in my shallow well. ## Features - M4 Pressure switch - MODEL # 9013FSG2J21M4 - SQUARE D BRAND - PRE-SET ON 30 OFF 50 - DESIGNED TO PROTECT YOUR PUMP SHOULD IT RUN OUT OF WATER ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00TG6N91G | | Best Sellers Rank | #47,053 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #24 in Pressure Switches | | Brand | PUMPTROL | | Brand Name | PUMPTROL | | Color | Black | | Customer Reviews | 4.2 out of 5 stars 151 Reviews | | Item Dimensions L x W x H | 3.74"L x 3.78"W x 4.33"H | | Item Weight | 0.86 Pounds | | Manufacturer | Schneider Electric | | Material | Plastic | | Material Type | Plastic | | Model Number | 9013FSG2J21M4 | | Power Source | Ac/dc | | Product Dimensions | 3.74"L x 3.78"W x 4.33"H | | Product Style | Submersible | | Style | Submersible | | UPC | 755717495266 | | Unit Count | 1 Count | ## Product Details - **Brand:** PUMPTROL - **Color:** Black - **Material:** Plastic - **Style:** Submersible - **Product Dimensions:** 3.74"L x 3.78"W x 4.33"H - **Power Source:** Ac/dc - **Item Weight:** 13.6 Ounces - **Manufacturer:** Schneider Electric - **UPC:** 755717495266 ## Images ![SQUARE D 30-50 M4 Low Pressure Cut-Off Switch WATER WELL PUMP TANK PROTECTION 9013FSG2J21M4 - Image 1](https://m.media-amazon.com/images/I/31GtgCxSBHL.jpg) ## Questions & Answers **Q: So in effect this switch will protect my pump on the inlet side if the incoming city water level drops below 10 psi, or if the well runs dry correct?** A: This switch is junk had to return contacts didn’t line up and lever did not work **Q: Hello. Is this 110V or 220Volts?** A: It would work on a 110v or 240v pump as you are only breaking one side of the power **Q: Is this 220v?** A: Yes **Q: will this work on a pressurized system ?** A: yes have hooked uip to 85 gal pressure tank ## Customer Reviews ### ⭐⭐⭐⭐⭐ Both Square D and Telemecanique are part of Schneider Electric. The switch is the same regardless. *by S***N on August 15, 2025* This is a preliminary review. The switch appears to be fine, and the reset lever operates as it should. I have not installed it yet. In the off chance it doesn't work I will definitely edit this review. Of course the real test is if it continues to work for several years. Also, our switches have failed due to sediment getting into them, which of course is not their fault. The photo on the listing page (above) shows a *Square D* switch. What I received is a "Telemecanique." Both the listing photo and the switch I received do say "Pumptrol" so they probably are the same, but the listing photo should match the product being sold. I found this with a Google search: "Both Square D and Telemecanique are part of Schneider Electric. Schneider Electric has integrated some of the Square D sensor products, specifically limit, pressure, and float switches, under the Telemecanique Sensors brand." After doing that search I found an insert that says basically the same thing. At least one or two reviews mention that the terminal and ground screws (6 total) were extremely tight. That was the case with the switch I received also. They would not budge with a screwdriver so I put the switch in a vice and used a Phillips bit in a 1/4" socket on a 1/4" drive ratchet. The screws broke loose easily then. ### ⭐⭐⭐⭐⭐ One of those items you don't know you need until you know the trouble you're in without it... *by J***A on July 17, 2025* I bought this item in fully rebuilding my well after the jet pump assembly absolutely ruined the entire setup because it didn't have one of these on it to begin with. If it had one of these, I would have saved about $1000. Highly highly recommend one of these with a safety shut off for low/no pressure. This item is a high quality unit at a good price. Would definitely use this exact unit on any job going forward. Functions as intended and will definitely be a pump saver in my shallow well. ### ⭐⭐⭐⭐⭐ Best replacement for factory switch *by J***A on November 9, 2025* Works as it should. Saved my pump from burning up ## Frequently Bought Together - SQUARE D 30-50 M4 Low Pressure Cut-Off Switch WATER WELL PUMP TANK PROTECTION 9013FSG2J21M4 - MEASUREMAN 0-100 PSI/kPa Water Pressure Gauge, Glycerin Filled,psi Gauge,for Home Water Pressure Test, 2-1/2’’ Dial, 304 Stainless Steel Case, 1/4’’ NPT Lower Mount - 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/18096854-square-d-30-50-m4-low-pressure-cut-off-switch](https://www.desertcart.co.uk/products/18096854-square-d-30-50-m4-low-pressure-cut-off-switch) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-07-03*