Thomas Betts GUAC26-TB Round Electrical Box Iron

Product Description

The THOMAS BETTS GUAC26-TB is a round iron electrical box designed for use in hazardous location wiring applications. Zinc-plated for corrosion resistance, this box measures 3.5 inches overall width and 2 inches overall depth. It ships with internal ground screws and includes two 0.75-inch knockouts for conduit entry. Rated for Class I, II, and III hazardous environments, it meets UL 514A and UL 886 standards along with CSA certification. Licensed electricians working in industrial, petrochemical, grain handling, and similar hazardous-duty settings will find this box suited to code-compliant installations where explosion-proof or dust-ignition-proof enclosures are required.

This box is appropriate for both residential and commercial electrical installations where NEMA 3, NEMA 4, NEMA 7CD, and NEMA 9EFG ratings are specified. It is commonly installed in locations where exposure to flammable gases, combustible dust, or ignitable fibers creates a classified hazardous area. The two 0.75-inch knockouts accommodate standard conduit fittings used in industrial conduit systems. Licensed electricians and plant maintenance personnel are the primary installers for this type of enclosure.

Key Features

• Round iron body with zinc-plated finish for durability in harsh environments
• Two 0.75-inch knockouts for conduit entry
• Internal ground screws included
• Rated Class I Divisions 1 and 2 Groups C and D; Class II Division 1 Groups E, F, and G; Class III Divisions 1 and 2
• NEMA ratings: 3, 4, 7CD, and 9EFG
• UL Listed under UL 514A, UL 886, and UL File 202368; CSA Certified to CSA C22.2 No. 30

Compatibility

Designed as an OEM-style replacement or new-installation enclosure for round iron electrical boxes used in hazardous-location conduit systems meeting Class I, II, and III division requirements.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes governing hazardous locations. De-energize all circuits and verify absence of voltage before opening or working inside the enclosure. Conduit fittings used with this box must carry matching hazardous-location ratings to maintain the integrity of the classified area seal. Do not substitute non-rated fittings or covers, as doing so may void the hazardous-location listing.