Southwire LRB28 Malleable Reducing Bushing 3x2 Inch

Product Description

The SOUTHWIRE LRB28 is a malleable iron reducing bushing designed to transition conduit or fitting openings from a 3-inch trade size down to a 2-inch trade size. Reducing bushings like this one are standard components in electrical raceway installations, allowing electricians to adapt knockout openings, enclosures, and fittings without replacing the entire fitting or box. The malleable iron construction provides reliable durability and thread engagement in both commercial and industrial wiring applications. This part is also cross-referenced under Madison Electric LRB-28 and Topaz RB23.

The LRB28 is used wherever a 3-inch to 2-inch conduit size reduction is needed at enclosures, junction boxes, conduit bodies, or panel knockouts. It is a common fit in commercial electrical installations, industrial facilities, and large residential service work where mixed conduit sizes converge at a single enclosure. Licensed electricians and electrical contractors typically specify reducing bushings during rough-in and panel termination work.

Key Features

• Malleable iron construction for strong thread engagement and long service life
• Transitions a 3-inch trade-size opening to a 2-inch trade-size fitting
• Threaded design for secure installation into standard conduit fittings and enclosures
• Cross-referenced with Madison Electric LRB-28 and Topaz RB23 for easy sourcing verification

Compatibility

Cross-referenced as a direct replacement for Madison Electric LRB-28 and Topaz RB23. Designed as an OEM-style replacement reducing bushing for standard 3-inch to 2-inch threaded conduit fitting applications.

Installation Notes

Installation is performed by a licensed electrician in accordance with applicable NEC requirements. De-energize the enclosure or panel completely before working on any knockout or fitting opening. Thread the bushing in by hand first, then tighten with an appropriate pipe wrench or strap wrench to achieve full thread engagement without overtightening. Inspect threads on the enclosure knockout or fitting before installation to ensure compatibility and prevent cross-threading.

Technical Specifications

• Material: Malleable Iron
• Trade Size (Large End): 3 inches
• Trade Size (Small End): 2 inches
• Type: Reducing Bushing

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: LRB28