--- product_id: 14890106 title: "- 300 Amp Switchable Magnetic Welding Ground Clamp" brand: "magswitch" price: "$135.53" currency: USD in_stock: true category: "Magswitch" url: https://www.desertcart.us/products/14890106-300-amp-switchable-magnetic-welding-ground-clamp store_origin: US region: United States of America --- # 300 Amp Instant On/Off Power Finned Design for Cooler High-Duty Use 200 lb Magnetic Hold on Flat & Round Steel - 300 Amp Switchable Magnetic Welding Ground Clamp **Brand:** magswitch **Price:** $135.53 **Availability:** βœ… In Stock ## Summary > 🧲 Weld Smarter, Not Harder β€” Magnetize Your Workflow! ## Quick Answers - **What is this?** - 300 Amp Switchable Magnetic Welding Ground Clamp by magswitch - **How much does it cost?** $135.53 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/14890106-300-amp-switchable-magnetic-welding-ground-clamp) ## Best For - magswitch enthusiasts ## Why This Product - Trusted magswitch brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Cool Under Pressure:** Innovative finned design dissipates heat efficiently, enabling longer, uninterrupted welding sessions. - β€’ **Lightweight & Portable:** At just 9.6 ounces, this clamp travels with youβ€”perfect for on-site pros who demand mobility. - β€’ **Clean & Ready in Seconds:** Switch off magnetism to easily remove metal shavings and maintain peak conductivity. - β€’ **Effortless Magnetic Grip:** 200 lb breakaway force secures your ground instantly on pipes and platesβ€”no clamps, no hassle. - β€’ **Power-Packed Performance:** Supports a robust 300 Amp current with instant on/off switching for seamless welding workflow. ## Overview The Magswitch 300 Amp Switchable Magnetic Welding Ground Clamp delivers a powerful 300 Amp grounding solution with a 200 lb magnetic hold on both flat and round steel surfaces. Its finned design reduces operating temperature for extended high-duty cycles, while its lightweight, portable form factor eliminates the need for traditional clamps. Ideal for professional welders seeking efficiency, reliability, and quick setup, this clamp also features an easy off-switch to clean metal debris, ensuring consistent performance on every job. ## Description Magswitch 300 Amp Switchable Magnetic Welding Ground Clamp | 300 Amp switchable magnetic welding ground clamp. 200 lb breakaway force for flat and round surfaces. - desertcart.com ## Features - Instant On/Off 300 Amp Grounding with 200 lb Magnetic Hold - Works on flat and round steel β€” perfect for pipes and plates - Finned design lowers operating temperature for high-duty cycles - Lightweight and portable β€” grounds instantly, no clamps needed - Turn off to clean metal shavings easily ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00VTQBUXU | | Best Sellers Rank | #56,159 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #46 in Bar Clamps | | Brand Name | Magswitch | | Color | Yellow | | Customer Reviews | 4.6 4.6 out of 5 stars (799) | | Global Trade Identification Number | 00878628002931 | | Included Components | Ground clamp, Instruction manual | | Item Dimensions | 2.9 x 1.9 x 2.3 inches | | Item Highlight | 300 Amp switchable magnetic welding ground clamp. 200 lb breakaway force for flat and round surfaces. | | Item Type Name | Ground Clamp | | Item Weight | 9.6 ounces | | Manufacturer | Magswitch Technology Inc. | | Manufacturer Part Number | Ground Clamp 300AMP with FIN | | Manufacturer Warranty Description | 1 Year Manufacturer Warranty | | Material Type | Iron | | Model Number | 8100746 | | Number of Items | 1 | | Style Name | Heavy Duty | | Tensile Strength | 200 pounds | | UPC | 712231542593 878628002931 | | Unit Count | 1 Count | ## Product Details - **Brand:** Magswitch - **Color:** Yellow - **Global Trade Identification Number:** 00878628002931 - **Item Weight:** 9.6 ounces - **Item dimensions L x W x H:** 2.9 x 1.9 x 2.3 inches - **Material:** Iron - **Style:** Heavy Duty - **Tensile Strength:** 200 pounds - **UPC:** 712231542593 878628002931 ## Images ![- 300 Amp Switchable Magnetic Welding Ground Clamp - Image 1](https://m.media-amazon.com/images/I/81wLVteA29L.jpg) ![- 300 Amp Switchable Magnetic Welding Ground Clamp - Image 2](https://m.media-amazon.com/images/I/51JzrV0mQLL.jpg) ![- 300 Amp Switchable Magnetic Welding Ground Clamp - Image 3](https://m.media-amazon.com/images/I/51fH4p94FVL.jpg) ![- 300 Amp Switchable Magnetic Welding Ground Clamp - Image 4](https://m.media-amazon.com/images/I/51j4ASYclbL.jpg) ![- 300 Amp Switchable Magnetic Welding Ground Clamp - Image 5](https://m.media-amazon.com/images/I/51-tk4k47VL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Can i use a 7/16 bolt on this clamp instead of the 1/2 bolt** A: An undersized bolt can be used, but it is important to note that the bolt does not (should not) serve as the primary electrical contact. Make sure your crimped ring lead or lug on the ground wire of your welder makes direct contact with the bare aluminum area of the ground clamp frame. The steel bolt, washers, lock-washer, and nut are only intended to surround that joint and press the copper lug to the aluminum frame, maintaining good electrical contact. If you have any steel between the ground lug and the aluminum frame of the magnetic clamp, it will heat up (just like the part you are welding) and the ground clamp will not perform well (and could have a reduced lifespan). **Q: I see these come in different amps. How do I pick the correct one? Thanks!** A: What's the highest amps your machine has **Q: Has anyone used this on a cnc plasma table? if so does it work well? pros and cons please. thanks** A: Hello Cameron, I have a fabrication shop and use it for everything, arc, tig and plasma. On a table I would probably make sure to actually attach the ground via the supplied bolt with this product. I only clamp to it. I guess this might only be necessary depending on the amperage of your table. They state 300 amp so really should no be a problem, I wold just say it might do better bolted. Hate to screw up a long run on the table. Hope this helps son. Jack **Q: Where is it made?** A: Made in China ## Frequently Bought Together - Magswitch 300 Amp Magnetic Welding Ground Base Clamp Holder for Welding Kit, Tools, Supplies and Accessories, Magnet Switch with On/Off Grounding Capabilities, (8100746) - Magswitch MagSquare 400 Magnetic Welding Square Base Clamp Holder for Welding Kit, Tools, Supplies and Accessories, Magnet Switch with On/Off Capabilities, 400 lb Holding Force - Magswitch Mini Multi Angle Welding Magnet - for Metal Fabrication Welding Accessories and Tools, with 300 Amp Grounding Clamp Holder and Magnet On/Off Capabilities, 150 lb Holding Force --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/14890106-300-amp-switchable-magnetic-welding-ground-clamp](https://www.desertcart.us/products/14890106-300-amp-switchable-magnetic-welding-ground-clamp) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-07*