Appleton GRSS Series Explosion...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$219.06
Appleton GRSS Series Explosionproof Conduit Outlet Box, Multiple Hubs

Appleton GRSS Series Explosionproof Conduit Outlet Box, Multiple Hubs

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Model: GRSS50

In Stock (leaves warehouse same day if ordered before 3pm ET)

$219.06
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Appleton GRSS Series Explosionproof Conduit Outlet Box, Multiple Hubs

The Appleton GRSS Series conduit outlet box is an explosionproof, dust-ignitionproof, and raintight fitting built with multiple hubs to permit flexible conduit routing in classified hazardous locations. Furnished with a cover, internal ground screw, and cover O-ring, each box features a copperfree aluminum body and cover for superior corrosion resistance in indoor or outdoor installations. Accurately tapped, tapered hub threads deliver tight, rigid joints and reliable ground continuity for threaded metal conduit systems used in general purpose wiring.

Key Features

  • Multiple Hubs: Permit flexibility in connecting different lengths of conduit and changing conduit direction.
  • Durable Construction: Copperfree (4/10 of 1% max.) aluminum body and cover with epoxy powder coat provide superior corrosion resistance.
  • Hazardous Location Rated: Explosionproof, dust-ignitionproof, and raintight construction for demanding classified environments.
  • Threaded Hub Design: Accurately tapped, tapered hub threads create tight, rigid joints and dependable ground continuity.
  • Internal Ground Screw: Standard on every box for secure, code-compliant grounding.
  • Cover O-Ring Included: Furnished with covers and a sealing O-ring for raintight performance.
  • General Purpose Wiring: Designed for use with threaded metal conduit in indoor and outdoor classified locations.

Certifications & Compliance

  • Class I, Division 1 and 2, Groups B, C, D
  • Class II, Division 1 and 2, Groups E, F, G
  • Class III

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Typical Applications

  • Hazardous and Classified Location Wiring
  • Indoor and Outdoor Conduit Systems
  • Maintenance Access Points for Conduit Runs
  • Conduit Direction Changes and Extensions
  • General Purpose Wiring with Threaded Metal Conduit

Why Appleton?

Appleton engineers the GRSS Series with copperfree aluminum construction and epoxy powder coat finishing to withstand corrosive indoor and outdoor environments while maintaining explosionproof, dust-ignitionproof, and raintight integrity. With accurately tapped tapered hub threads, a standard internal ground screw, and Class I/II/III hazardous location compliance, these conduit outlet boxes deliver the rigid, code-compliant performance professional electricians rely on for classified installations.

Product Specs

Product Type:
Outlet Box
Product Finish:
Epoxy Powder Coat
Configuration:
Multiple Hubs
Product Material:
Aluminum
Department:
Electrical
Product Group:
Boxes & Enclosures
Product Subgroup:
Electrical Boxes

Appleton GRSS50 – Frequently Asked Questions

1) Is the Appleton GRSS conduit outlet box rated for Class I Division 1 hazardous locations?
Yes. The GRSS Series box is explosionproof and dust-ignitionproof, rated for Class I, Divisions 1 and 2, Groups B, C and D; Class II, Divisions 1 and 2, Groups E, F and G; and Class III. That covers the usual gas and vapor groups including Group B hydrogen, plus combustible dust and fiber areas, so it works in refinery, chemical, grain handling and similar classified spaces.
2) What hub sizes does the Appleton GRSS outlet box come in?
Three hub trade sizes: 1/2 inch (GRSS50), 3/4 inch (GRSS75) and 1 inch (GRSS100). Each box carries multiple hubs of that one size, so pick the box that matches the rigid conduit trade size running through the box. Mixing trade sizes on one body is not an option here; use a reducing bushing or a size change elsewhere in the run.
3) Can the GRSS box be used with EMT or flexible conduit?
No. The hubs are tapered, threaded (NPT) openings intended for threaded rigid metal conduit. Set screw EMT connectors won't make the explosionproof joint or the ground continuity the box depends on. If your run is EMT, transition to rigid or to threaded fittings before the box.
4) Does the Appleton GRSS box come with a cover, or do I order that separately?
It ships complete: cover, cover O-ring for the raintight seal, and an internal ground screw are all furnished with the box. You supply the conduit, conductors, and any sealing fittings the classified installation requires.
5) Will the GRSS outlet box hold up outdoors and in a corrosive plant environment?
It's built for it. The body and cover are copperfree aluminum (4/10 of 1% maximum copper) with an epoxy powder coat, and the box is raintight with the O-ring cover seal. Copperfree aluminum matters in chemical and petrochemical areas where copper content accelerates attack. Rated for indoor or outdoor use.
6) Why choose a multiple hub box like the GRSS instead of a single or two hub conduit body?
Multiple hubs let you branch and change direction at one point, and they give you a pull and maintenance access point mid-run without adding a second fitting. If you only need a straight coupling or a simple 90, a smaller conduit body is the cheaper pick. Where several conduits converge, or you expect to add a run later, the multiple hub body saves a rework.
7) Does the GRSS box satisfy equipment grounding requirements, or do I need a separate ground bushing?
An internal ground screw is standard on every GRSS box, so you can land an equipment grounding conductor inside. The tapered threaded hubs also provide ground continuity through the conduit system itself. No external grounding bushing is needed for the box.
8) How do I identify the right Appleton GRSS part number to order?
The number tracks the hub trade size: GRSS50 for 1/2 inch hubs, GRSS75 for 3/4 inch, GRSS100 for 1 inch. All three are the same multiple hub explosionproof outlet box in copperfree aluminum with epoxy powder coat, differing only in hub size.
How fast can I get the Appleton GRSS50 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Appleton GRSS50 come with a warranty?
Absolutely. The Appleton GRSS50 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Appleton GRSS50?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Appleton GRSS50 from ZenSupply?
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