Southwire CPB350 Plastic Conduit Bushing 3.5 in

Product Description

The SOUTHWIRE CPB350 is a plastic conduit bushing sized for 3.5-inch conduit trade size. Conduit bushings protect wire and cable insulation from abrasion at the point where conductors exit a conduit end. This bushing slips onto the threaded end of rigid or IMC conduit and is secured at the termination point, providing a smooth bearing surface that guards against insulation damage during pull-in and throughout the service life of the installation. Electricians install this fitting as part of standard raceway terminations in both new construction and retrofit work.

The CPB350 is suited for use in residential, commercial, and light industrial electrical installations wherever 3.5-inch conduit terminates into a panel, junction box, or enclosure. Its plastic construction makes it a practical choice for general-purpose indoor and protected outdoor applications where a non-metallic bushing is acceptable under the applicable installation code. It is a direct replacement for the Madison Electric CPB-350.

Key Features

• Smooth interior bearing surface protects conductor insulation at conduit terminations
• Sized for 3.5-inch trade size conduit
• Plastic construction resists corrosion and does not require grounding continuity like metallic bushings
• Lightweight at approximately 0.1 pounds, simplifying handling on the job
• One year limited warranty

Compatibility

Designed as an OEM-style replacement for the Madison Electric CPB-350 plastic conduit bushing. Suitable for use with 3.5-inch rigid metal conduit (RMC) and intermediate metal conduit (IMC) terminations where a non-metallic bushing is permitted.

Installation Notes

Installation is performed by licensed electricians in accordance with the National Electrical Code (NEC). De-energize the circuit and verify the absence of voltage before working at any panel or enclosure where this bushing will be installed. Thread or seat the bushing onto the conduit end before pulling conductors to prevent insulation damage. Confirm that local codes permit a plastic bushing for the application and conduit type before installation.

Technical Specifications

• Trade Size: 3.5 inches
• Material: Plastic
• Weight: 0.1 pounds
• Warranty: One Year Limited
• Country of Origin: China

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: CPB350