Appleton BB-300 Plastic Bushing 3 Inch 150 Degree

Product Description

The APPLETON BB-300 is a 3-inch plastic bushing rated for 150-degree service, designed to protect wire and cable insulation at conduit entry points. Bushings of this type are installed at the end of rigid metal conduit (RMC) or intermediate metal conduit (IMC) to eliminate sharp edges that could cut or abrade conductor insulation. The BB-300 is a standard trade fitting used by licensed electricians in commercial and industrial wiring applications. Its plastic construction provides a smooth, low-friction surface that keeps conductors intact during pull-through and long-term service.

This bushing is suited for use in commercial and industrial electrical installations where 3-inch conduit terminates at junction boxes, panels, or enclosures. It is commonly installed wherever RMC or IMC conduit ends require insulation protection per NEC requirements. The 150-degree temperature rating makes it appropriate for installations where elevated ambient or conductor temperatures are expected. Electricians in plant maintenance, construction, and industrial service work regularly stock this fitting for panel and enclosure terminations.

Key Features

• 3-inch trade size fits standard RMC and IMC conduit terminations
• 150-degree temperature rating suitable for elevated-temperature environments
• Plastic construction protects conductor insulation from conduit edge abrasion
• Lightweight at 0.2 pounds for easy handling and installation
• Smooth interior surface reduces friction during wire pull-through

Compatibility

Designed as an OEM-style fitting for use with 3-inch rigid metal conduit and intermediate metal conduit terminations in standard electrical installations.

Installation Notes

Installation is performed by a licensed electrician. De-energize the circuit and follow lockout/tagout procedures before working at any panel or enclosure where this bushing will be installed. The bushing is seated at the conduit end prior to pulling conductors. Refer to NEC Article 300 for conduit fill and termination requirements applicable to this fitting.

Technical Specifications

• Trade Size: 3 inches
• Temperature Rating: 150 degrees F
• Material: Plastic
• Weight: 0.2 pounds
• Package Dimensions (L x W x H): 8.3 inches x 5.4 inches x 0.51 inches
• UPC: 78312603121

Standard Information

• Brand: APPLETON
• Manufacturer Part Number: BB-300