Engineered for solid, code-compliant grounding in 1-1/4" conduit systems, the Sigma Electric ProConnex 1-1/4 in. Zinc Insulated Grounding Bushing delivers reliable insulation and durable metal protection in a compact, single-part design.
Part of the ProConnex family, this insulated grounding bushing is built from zinc for long-term corrosion resistance and features precise dimensions crafted for a snug fit with a 1-1/4" conduit. It accommodates a 1.27" inside diameter and measures 1.87" outside diameter with a 0.07" wall thickness, ensuring robust protection without crowding the conduit run.
Key specifications
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Material: Zinc
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Conduit size / trade size: 1-1/4"
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Inside diameter: 1.27"
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Outside diameter: 1.87"
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Thickness: 0.07"
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Insulating: Yes
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Packaging: Bagged; Number in package: 1
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Brand: Sigma Electric ProConnex
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Listings: UL Listed; CSA Listed
Why this matters
- The zinc insulated construction provides durable, corrosion-resistant protection for grounding conductors in demanding environments, helping extend the life of the installation.
- Insulation keeps grounding conductors isolated from metal enclosures, reducing the risk of shorts and grounding path damage in wet or dusty settings.
- UL and CSA safety listings give you confidence that this bushing meets recognized electrical codes and standards for reliability and performance.
- The compact ProConnex form factor simplifies installation in panels, junction boxes, or other knockout locations without adding unnecessary bulk.
Ideal use cases
- New installations or replacements in commercial and light industrial wiring projects using 1-1/4" conduit.
- Enclosures in damp or corrosion-prone locations where durable zinc corrosion resistance is beneficial.
- Projects requiring a clearly rated insulated grounding path for compliance and safety documentation.
Installation tips
- Verify power is off before working on conductors and bushings.
- Ensure the bushing is seated flush in the conduit knockout or enclosure opening for optimal insulation and protection.
- Combine with compatible ProConnex components to maintain consistent material and listing compliance across the installation.
With Sigma Electric’s ProConnex line, you get a purpose-built solution that prioritizes safety, reliability, and ease of installation in everyday electrical projects. This single-piece, bagged insulated grounding bushing is designed to integrate smoothly into your 1-1/4" conduit workflows and code-approved grounding schemes.
