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Sigma Engineered Solutions ProConnex 1/2 in. Zinc Insulated Grounding Bushing

Introducing the Sigma Engineered Solutions ProConnex 1/2 in. Zinc Insulated Grounding Bushing — a purpose-built component engineered to deliver a durable, insulated grounding path…

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About Product Overview

Introducing the Sigma Engineered Solutions ProConnex 1/2 in. Zinc Insulated Grounding Bushing — a purpose-built component engineered to deliver a durable, insulated grounding path where metal and conductor surfaces meet. Crafted from zinc and designed for reliability, this bushing protects grounding connections while keeping the circuit isolated from enclosure surfaces, helping you meet code requirements without compromise.

  • Material: Zinc, with insulating construction to prevent contact between the grounding path and surrounding metal surfaces.
  • Trade Size: 1/2 in — designed for standard 1/2 inch grounding applications.
  • Inside Diameter: 0.54 in
  • Outside Diameter: 1.04 in
  • Wall Thickness: 0.07 in
  • Insulating: Yes — maintains a secure, isolated grounding route.
  • Packaging: Bagged, with 1 piece per package
  • Brand: Sigma Engineered Solutions, Sub Brand: ProConnex
  • Listings: UL Listed and CSA Listed — verified for safety and compliance

Why this insulated grounding bushing matters

In electrical installations, a reliable grounding path is essential for safety and equipment protection. The ProConnex bushing provides a robust, insulated conduit entry point for the grounding conductor, reducing the risk of unwanted metal-to-metal contact, corrosion, and grounding path interruptions. Its zinc construction delivers lasting durability in a variety of environments, helping the grounding assembly endure the demands of ongoing service and maintenance.

Ideal applications

  • Enclosures and panels requiring a secure 1/2 in grounding connection with insulation from the enclosure wall
  • Conduit entry points where the grounding path must remain isolated from surrounding metal surfaces
  • New installations and upgrades in commercial or industrial settings that require certified, compliant grounding components

Practical benefits and outcomes

  • Improved grounding reliability thanks to a dedicated insulated pathway
  • Enhanced corrosion resistance and long-term durability from zinc construction
  • Code-compliant performance supported by UL and CSA listings
  • Streamlined procurement with a single, clearly defined 1/2 in grounding solution from the ProConnex family

Usage notes

Ensure compatibility with your system’s grounding conductor size and enclosure specifications. Follow local electrical codes and installation practices. Store and handle the bushing in its bagged packaging to protect its insulating surfaces prior to installation.

What you get

One ProConnex 1/2 in. Zinc Insulated Grounding Bushing in a bagged package, built to meet safety standards and designed to integrate seamlessly with Sigma Engineered Solutions’ grounding components for a cohesive, reliable electrical installation.

The Details Specifications

Brand Sigma Engineered Solutions
SKU 3402070
UPC 031857433819
Unit 0
Case Pack Quantity 10 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 1 × 4 × 6
Weight 0 lbs
Cubic Feet 0.00802 ft³
Country of Origin INDIA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

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