Hubbell GUM3 Explosion Proof Union Aluminum 1 Inch

Product Description

The HUBBELL GUM3 is a copper-free aluminum explosion-proof union designed to join two sections of rigid conduit or connect conduit to junction boxes, fittings, and other electrical devices in hazardous location installations. At 1 inch trade size with a male-to-female configuration, this fitting allows technicians to disconnect equipment from a conduit run without rotating or removing the conduit itself. Licensed electricians and industrial maintenance crews install this fitting wherever code requires explosion-proof conduit systems, including classified areas where flammable gases, vapors, or combustible dusts may be present.

This union is suited for use in Class I and Class II hazardous locations commonly found in petrochemical facilities, grain handling operations, wastewater treatment plants, and industrial manufacturing environments. The 1-inch trade size accommodates standard rigid metal conduit of that diameter, making it a straightforward replacement or new-installation component in explosion-proof wiring systems. The copper-free aluminum construction makes it appropriate for environments where copper alloys are restricted due to reactive atmosphere concerns.

Key Features

• Copper-free aluminum construction suitable for reactive or corrosive environments where copper alloys are prohibited
• Male-to-female union design allows equipment removal without rotating or disturbing the conduit run
• 1-inch trade size fits standard rigid metal conduit of the same diameter
• Explosion-proof rated for use in hazardous location conduit systems
• Compatible with junction boxes, conduit bodies, fittings, and other explosion-proof devices

Compatibility

Designed as an OEM-style explosion-proof union for use with 1-inch rigid metal conduit systems in hazardous location electrical installations.

Installation Notes

Installation should be performed by a licensed electrician familiar with NEC Article 500 requirements for hazardous location wiring. De-energize the circuit and verify the area is safe before beginning work. Ensure all conduit threads are clean and properly engaged before tightening, and apply listed conduit thread compound where required by the authority having jurisdiction. Do not use this fitting as a structural support for conduit or attached equipment.

Technical Specifications

• Trade Size: 1 inch
• Connection Type: Male to Female
• Material: Copper-free aluminum
• UPC: 783936270135

Standard Information

• Brand: HUBBELL
• Manufacturer Part Number: GUM3