Thomas Betts 603-TB Conduit Reducer 1-3/4 in Rigid Imc

Product Description

The THOMAS BETTS 603-TB is a non-insulated threaded conduit reducer designed for rigid metal conduit and intermediate metal conduit (IMC) installations. This steel fitting allows a transition between two different conduit trade sizes, reducing a larger conduit run to a smaller one at junction points, panels, or enclosure entries. At a 1-3/4 inch trade size, it fits standard threaded rigid and IMC conduit ends. Electricians use this fitting in commercial and industrial raceways where conduit size changes are required within a run. The steel construction provides the mechanical strength expected in rigid conduit systems, and the threaded connection type ensures a secure, code-compliant joint.

This reducer is suited for non-hazardous area applications in commercial, industrial, and residential electrical installations. It is installed wherever a conduit system requires a trade-size transition, such as at pull boxes, enclosures, junction boxes, and panel knockouts. The threaded connection type is standard for rigid conduit and IMC, making this a straightforward drop-in fitting for any threaded conduit stub-up or transition point. The non-insulated design is appropriate for standard raceway use where a smooth interior throat is not required.

Key Features

• 1-3/4 inch trade size fits standard threaded rigid conduit and IMC fittings
• Steel construction provides mechanical durability for conduit raceway systems
• Threaded connection type for secure, code-compliant rigid and IMC joints
• Non-insulated design for standard non-hazardous area use
• Rated for non-hazardous area applications only

Compatibility

Designed as an OEM-style conduit fitting for use with threaded rigid metal conduit and intermediate metal conduit (IMC) systems in non-hazardous locations at a 1-3/4 inch trade size.

Installation Notes

Installation is performed by licensed electricians in accordance with the National Electrical Code (NEC). De-energize all circuits and verify the conduit run is free of conductors before making fitting changes. Thread the reducer onto the conduit end by hand first, then use a strap wrench or pipe wrench to achieve a tight, secure connection. This fitting is rated for non-hazardous locations only and must not be used in classified hazardous areas.