






⚡ Connect smarter, ground stronger — the pro’s choice for seamless bonding!
The SIGMA ENGINEERED SOLUTIONS ProConnex 42400 is a zinc-finished intersystem bonding bridge conduit fitting designed to ground up to four electrical systems simultaneously. Compatible with a broad range of conductor sizes (#6 to #2 main, #14 to #4 auxiliary), it features a lay-in lug for quick installation and supports both solid and stranded copper conductors, making it an essential, durable solution for professional-grade electrical grounding.







| Size | Intersystem Bonding Bridge Conduit Fitting |
| Material | Zinc |
| Brand | Sigma Electric |
| Color | Gray |
| Item dimensions L x W x H | 4.25 x 1.31 x 1.75 inches |
| Connector Type | Tee |
| Exterior Finish | Zinc |
| Thread Type | NPT |
| Item Weight | 4.8 ounces |
| Number of Pieces | 1 |
| Global Trade Identification Number | 00031857424008 |
| Manufacturer | Sigma Electric |
| UPC | 031857424008 |
| Part Number | 42400 |
| Product Dimensions | 4.25 x 1.31 x 1.75 inches |
| Item model number | 42400 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Included Components | Sigma Engineered Solutions ProConnex 42400 Intersystem Bonding Bridge Conduit Fitting, 1-Pack, Gray |
| Batteries Required? | No |
| Warranty Description | Warranty |
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