Appleton GRJT Series Conduit Outlet Box, Malleable Iron

Appleton GRH Series Explosionproof Conduit Outlet Box, Malleable Iron

The Appleton GRH Series conduit outlet box is an explosionproof, dust-ignitionproof fitting furnished with an internal ground screw and O-ring, built for indoor and outdoor classified locations. Constructed from malleable iron with a triple-coat finish, this outlet box is rated NEMA 3, 4 and is suitable for Class I, Groups A, B, C, and D; Class II, Groups E, F, and G; and Class III applications. It provides convenient access for maintenance, allows connection of different lengths of threaded metal conduit, and supports changes in conduit direction while maintaining ground continuity.

Key Features

• Hazardous Location Rating: Designed for use in Class I, Groups A, B, C, and D; Class II, Groups E, F, and G; and Class III environments.
• Threaded Connection: Internally threaded body with an externally threaded cover for a tight, rigid joint with threaded metal conduit.
• Durable Construction: Malleable iron body offers high tensile strength and ductility, providing strong resistance to corrosion, impact, and shock.
• Triple-Coat Finish: Zinc electroplate, chromate, and epoxy powder coat protect the body against corrosion.
• Raintight Fit: Standard O-rings provide a raintight seal meeting NEMA 3, 4 requirements.
• Internal Ground Screw: Furnished standard to maintain reliable ground continuity at the fitting.
• Integral Bushing: Smooth, rounded integral bushing in each hub protects conductor insulation during installation.
• Cover Included: Ships furnished with a copper-free (4/10 of 1% max.) aluminum cover finished in epoxy powder coat.

Certifications & Compliance

• Explosionproof, Dust-Ignitionproof
• Class I, Division 1 and 2, Groups A, B, C, D
• Class II, Division 1 and 2, Groups E, F, G
• Class III
• NEMA 3, 4

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Indoor and Outdoor Classified Locations
• Explosionproof and Dust-Ignitionproof Industrial Wiring
• Conduit Access Points for Maintenance
• Connection of Varying Conduit Lengths
• Conduit Direction Changes in Threaded Metal Conduit Systems
• Corrosion-Prone or Wet-Location Installations (NEMA 3, 4)

Why Appleton?

Appleton engineers the GRH Series outlet box with a malleable iron body and a triple-coat protective finish, backed by an internal ground screw and raintight O-ring seal, to deliver dependable performance in classified Class I, II, and III locations. This combination of corrosion resistance, ground continuity, and explosionproof, dust-ignitionproof construction makes it a trusted choice for code-compliant electrical installations in demanding industrial and outdoor environments.