--- product_id: 16560936 title: "Sigma ProConnex 42400 Grounding Intersystem Bonding Bridge, 1-Pack" brand: "sigma engineered solutions" price: "€ 32.02" currency: EUR in_stock: true reviews_count: 10 category: "Sigma Engineered Solutions" url: https://www.desertcart.at/products/16560936-sigma-proconnex-42400-grounding-intersystem-bonding-bridge-1-pack store_origin: AT region: Austria --- # Grounds up to 4 systems simultaneously Lay-in lug for effortless installation cULus listed for certified safety Sigma ProConnex 42400 Grounding Intersystem Bonding Bridge, 1-Pack **Brand:** sigma engineered solutions **Price:** € 32.02 **Availability:** ✅ In Stock ## Summary > ⚡ Bond smarter, install faster, stay certified. ## Quick Answers - **What is this?** Sigma ProConnex 42400 Grounding Intersystem Bonding Bridge, 1-Pack by sigma engineered solutions - **How much does it cost?** € 32.02 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/16560936-sigma-proconnex-42400-grounding-intersystem-bonding-bridge-1-pack) ## Best For - sigma engineered solutions enthusiasts ## Why This Product - Trusted sigma engineered solutions brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Durable:** Zinc construction ensures long-lasting performance in a compact 4.25 x 1.31 x 1.75 inch form factor. - • **Multi-System Mastery:** Ground up to four electrical systems in one sleek, space-saving unit. - • **Certified Reliability:** Meets NC 2011 article 250.94 standards and cULus listed for peace of mind on every job. - • **Effortless Installation:** Lay-in style lug design makes setup quick and hassle-free, perfect for solid or stranded copper. - • **Universal Wire Compatibility:** Supports main ground wires #6 to #2 and auxiliary wires #14 to #4 for ultimate versatility. ## Overview The Sigma ProConnex 42400 Grounding Intersystem Bonding Bridge is a compact, zinc-finished conduit fitting designed to ground up to four electrical systems simultaneously. Compatible with a wide range of copper conductor sizes (#6 to #2 main, #14 to #4 auxiliary), it features a lay-in lug for easy installation with both solid and stranded wires. Certified to meet NC 2011 article 250.94 and cULus listed, this reliable bonding bridge ensures safe, code-compliant grounding in residential and commercial electrical setups. ## Description Elevate your electrical installations with the Sigma Engineered Solutions ProConnex 42400 Intersystem Bonding Bridge Conduit Fitting, 1-Pack (Gray), your solution for efficient grounding of multiple systems in a single location. This bonding bridge mounts directly to the grounding electrode conductor, allowing you to ground up to four systems simultaneously. With a main ground wire range from #6 to #2 and an auxiliary ground wire range from #14 to #4, this bonding bridge ensures compatibility with various conductor sizes. The lay-in style lug makes installation a breeze, whether you're working with solid or stranded copper conductors. Review: Good bonding bridge - Good value for the cost easy install my township electrical inspector is requiring 2 ground rods and a bridge on every house to get a CO my local hardware store was sold out but desertcart came to the rescue the only thing is just a heads up does not come with mounting hardware not a deal breaker but if you are on the job bring screws to mount it Review: Work perfect - Good ## Features - MULTI-SYSTEM GROUNDING: Mounts directly to the grounding electrode conductor, enabling grounding of up to four systems in one location. - VERSATILE COMPATIBILITY: Main ground wire range accommodates #6 to #2 conductors, while auxiliary ground wire range handles #14 to #4 conductors. - EASY INSTALLATION: Lay-in style lug design facilitates easy installation, suitable for solid or stranded copper conductors. - DUAL CONDUCTOR APPROVAL: Approved for use with both solid and stranded copper conductors for versatility in electrical setups. - CERTIFICATIONS: Meets NC 2011 article 250.94, and product is cULus listed ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B006VX3RVO | | Best Sellers Rank | #153,414 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #226 in Electrical Conduit Fittings | | Brand | Sigma Engineered Solutions | | Brand Name | Sigma Engineered Solutions | | Color | Gray | | Connector Type | Tee | | Customer Reviews | 4.8 out of 5 stars 128 Reviews | | Exterior Finish | Zinc | | Global Trade Identification Number | 00031857424008 | | Included Components | Sigma Engineered Solutions ProConnex 42400 Intersystem Bonding Bridge Conduit Fitting, 1-Pack, Gray | | Item Dimensions | 4.25 x 1.31 x 1.75 inches | | Item Type Name | Intersystem Bonding Bridge Conduit Fitting | | Item Weight | 4.8 ounces | | Item dimensions L x W x H | 4.25 x 1.31 x 1.75 inches | | Manufacturer | Sigma Engineered Solutions | | Manufacturer Part Number | 42400 | | Manufacturer Warranty Description | Warranty | | Material | Zinc | | Material Type | Zinc | | Model Number | 42400 | | Number of Packs | 1 | | Number of Pieces | 1 | | Size | Intersystem Bonding Bridge Conduit Fitting | | Thread Type | NPT | | UPC | 031857424008 | | Unit Count | 1 Count | ## Product Details - **Brand:** Sigma Engineered Solutions - **Color:** Gray - **Connector Type:** Tee - **Exterior Finish:** Zinc - **Item Weight:** 4.8 ounces - **Item dimensions L x W x H:** 4.25 x 1.31 x 1.75 inches - **Material:** Zinc - **Number of Pieces:** 1 - **Size:** Intersystem Bonding Bridge Conduit Fitting - **Thread Type:** NPT ## Images ![Sigma ProConnex 42400 Grounding Intersystem Bonding Bridge, 1-Pack - Image 1](https://m.media-amazon.com/images/I/61RnKqYdSLL.jpg) ![Sigma ProConnex 42400 Grounding Intersystem Bonding Bridge, 1-Pack - Image 2](https://m.media-amazon.com/images/I/61oM+0m7CKL.jpg) ![Sigma ProConnex 42400 Grounding Intersystem Bonding Bridge, 1-Pack - Image 3](https://m.media-amazon.com/images/I/71GqBre4xEL.jpg) ![Sigma ProConnex 42400 Grounding Intersystem Bonding Bridge, 1-Pack - Image 4](https://m.media-amazon.com/images/I/71rvKersZvL.jpg) ![Sigma ProConnex 42400 Grounding Intersystem Bonding Bridge, 1-Pack - Image 5](https://m.media-amazon.com/images/I/71GCQBhLHvL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good bonding bridge *by J***2 on March 31, 2023* Good value for the cost easy install my township electrical inspector is requiring 2 ground rods and a bridge on every house to get a CO my local hardware store was sold out but amazon came to the rescue the only thing is just a heads up does not come with mounting hardware not a deal breaker but if you are on the job bring screws to mount it ### ⭐⭐⭐⭐⭐ Work perfect *by A***N on March 22, 2026* Good ### ⭐⭐⭐⭐⭐ It will do *by J***N on May 24, 2019* It works, no complaints, and the price isn't bad. Just do not over tighten the #3 screw that you run your panel ground to. It will break every time. I did it, then the guy working for me did it. But then I got on Amazon right away, ordered more and we were back in business right before the inspector came. --- ## 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.at/products/16560936-sigma-proconnex-42400-grounding-intersystem-bonding-bridge-1-pack](https://www.desertcart.at/products/16560936-sigma-proconnex-42400-grounding-intersystem-bonding-bridge-1-pack) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-09-04*