Bridgeport Fittings 370-DC 4" Insulated Bushing, Zinc Die-Cast

Bridgeport Fittings 370-DC 4" Insulated Bushing, Zinc Die-Cast

The Bridgeport Fittings 370-DC insulated bushing is a 4" fitting built from rugged zinc die-cast material, designed to protect wire insulation from abrasion, cutting, and mechanical stress wherever conductors pass through conduit ends, box knockouts, or enclosure openings. As electrical conductors are pulled through raceway systems, sharp metal edges at conduit terminations can nick or wear through wire insulation over time, creating a potential safety hazard; the 370-DC helps address this risk with a smoothly contoured insulating surface that shields cable jackets during and after installation. Sized for 4" trade size applications, this bushing is intended for use at the point where conduit meets a box, cabinet, or enclosure, providing a secure, rounded transition for conductors. Bridgeport Fittings manufactures the 370-DC from zinc die-cast for long-term strength and corrosion resistance in demanding commercial and industrial electrical environments, making it a practical, code-conscious solution for contractors seeking dependable conductor protection at conduit terminations.

Key Features

• Trade Size: Engineered for 4" conduit and enclosure openings, ensuring a proper fit at termination points.
• Durable Zinc Die-Cast Construction: Zinc die-cast body delivers strength and corrosion resistance for long service life in commercial and industrial installations.
• Insulated Bushing Design: Smooth, rounded insulating surface shields conductor insulation as wires pass through conduit ends and enclosure knockouts.
• Conductor Protection: Helps reduce insulation abrasion, cuts, and nicks at raceway terminations that could otherwise lead to faults over time.
• 4" Application Fit: Sized specifically for 4" conduit and box openings, providing a secure transition point for conductor runs.
• Professional-Grade Hardware: Manufactured by Bridgeport Fittings for consistent, reliable performance across raceway and enclosure systems.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Conduit and Raceway Systems – protects conductors at conduit terminations throughout raceway runs.
• Panelboard, Cabinet, and Enclosure Knockouts – provides a protective transition at enclosure entry points.
• Commercial and Industrial Electrical Installations – suited for demanding professional wiring projects.
• Conductor Pull-Through Protection – shields wire insulation during and after cable installation.
• New Construction and Renovation Wiring – supports both new builds and electrical upgrade projects.

Why Bridgeport Fittings?

Bridgeport Fittings engineers the 370-DC insulated bushing from zinc die-cast material to deliver long-lasting, dependable conductor protection at conduit terminations. This 4" bushing reflects Bridgeport Fittings' commitment to durable, professional-grade electrical hardware that helps contractors safeguard conductor insulation and maintain safe, reliable wiring systems. Choose the Bridgeport Fittings 370-DC for consistent zinc die-cast quality construction backed by a trusted name in electrical conduit fittings.