Southwire 633TBS Top Bite Connector 1 Inch

Product Description

The SOUTHWIRE 633TBS is a 1-inch top bite connector designed for secure conduit termination in electrical installations. This fitting uses a top-entry screw-bite design to clamp conduit firmly without rotating the conduit body, making it well-suited for tight or confined boxes and enclosures. Licensed electricians and electrical contractors install this connector during rough-in and finish wiring work where a reliable, code-compliant conduit-to-box connection is required. The 633TBS is a straightforward, field-proven connector built for daily use in commercial and residential electrical work.

The 633TBS is used in standard electrical conduit installations where conduit must terminate at a junction box, panel enclosure, or device box. Its 1-inch trade size fits standard 1-inch conduit, making it applicable across a wide range of residential, commercial, and light industrial wiring projects. The top bite clamping mechanism allows the installer to secure the connection from above, which is a practical advantage when working in populated enclosures with limited clearance around the knockout.

Key Features

• 1-inch trade size for compatibility with standard 1-inch conduit
• Top bite screw design clamps conduit without rotating the fitting body
• Suited for junction boxes, panels, and device enclosures with limited workspace
• Compact form factor supports installation in congested enclosures
• Designed for use in standard electrical conduit termination applications

Compatibility

Designed as an OEM-style replacement and standard-use connector for 1-inch trade size conduit termination applications in residential and commercial electrical systems.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize and lock out the panel or enclosure before beginning any conduit termination work. Insert the conduit through the knockout to the appropriate depth and tighten the top bite screw securely using a flathead screwdriver or nut driver. Do not overtighten, as this may distort the connector body or damage the conduit.

Technical Specifications

• Trade Size: 1 inch
• Weight: 9 pounds
• UPC: 75133885175

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: 633TBS