Topaz Lighting 631SI Steel Set...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$43.74
Topaz Lighting 631SI Steel Set-Screw EMT Connector with Insulated Throat, Zinc-Plated

Topaz Lighting 631SI Steel Set-Screw EMT Connector with Insulated Throat, Zinc-Plated

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Model: 631SI

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

$43.74
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Topaz Lighting 631SI Steel Set-Screw EMT Connector with Insulated Throat, Zinc-Plated

The Topaz Lighting 631SI Steel Set-Screw EMT Connector with Insulated Throat is engineered to securely bond EMT thin-wall conduit to electrical boxes and enclosures in dry-location installations, and is available in trade sizes ranging from 1/2" through 4", with 2-1/2" to 4" sizes also suitable for rigid conduit. Constructed of strong, long-lasting steel with a zinc-plated finish, these connectors deliver concrete-tight protection when taped and feature an insulated throat for superior abrasion protection at the wire entry point. Each assembly includes a steel locknut and is UL Listed and NEMA/ANSI FB-1 compliant, delivering code-compliant performance across this full family of EMT connector sizes.

Key Features

  • Wide Size Range: Available in 1/2" through 4" trade sizes to accommodate a broad range of EMT conduit installations; 2-1/2" to 4" sizes are also suitable for rigid conduit.
  • Durable Construction: Manufactured from strong, long-lasting steel for reliable mechanical integrity in demanding electrical installations.
  • Zinc-Plated Finish: Zinc-plated steel finish provides corrosion resistance and extended service life in dry-location applications.
  • Set-Screw Connection: Set-screw type assembly ensures a secure, positive connection between EMT conduit and electrical boxes or enclosures.
  • Insulated Throat: Insulated throat design offers superior protection against wire abrasion at the conduit entry point, safeguarding conductor insulation.
  • Concrete Tight When Taped: Provides concrete-tight protection when taped, making these connectors suitable for concrete-encased applications.
  • Includes Steel Locknut: Each connector assembly includes a steel locknut for a complete, code-ready installation.
  • Dry Location Rated: Designed for use in dry locations, bonding EMT thin-wall conduit to electrical boxes or enclosures.

Certifications & Compliance

  • UL Listed
  • NEMA/ANSI FB-1 Compliant
  • Concrete Tight When Taped
  • Suitable for Dry Locations

Technical Specifications

  • Conduit Type: EMT
  • Connection Type: Set Screw
  • Listing: UL Listed, NEMA/ANSI FB-1 Compliant
  • Pack Size: 100

Typical Applications

  • Bonding EMT Thin-Wall Conduit to Electrical Boxes and Enclosures
  • Commercial and Industrial Electrical Conduit Systems
  • Dry-Location Raceway and Conduit Installations
  • Concrete-Encased Conduit Runs (when taped)
  • New Construction and Renovation Electrical Projects
  • Panelboard, Load Center, and Junction Box Connections

Why Topaz Lighting?

Topaz Lighting EMT connectors are built from strong, long-lasting steel with a zinc-plated finish, ensuring dependable performance and corrosion resistance across the full 1/2" to 4" size range. Each connector is UL Listed and NEMA/ANSI FB-1 compliant, giving electrical professionals confidence in code-compliant, reliable conduit system assembly. The insulated throat and included steel locknut reflect Topaz Lighting's commitment to delivering complete, installation-ready fittings that protect both conductors and conduit systems.

Product Specs

Product Type:
EMT Connector
Conduit Type:
EMT
Connection Type:
Set Screw
Listing:
UL Listed
Department:
Electrical
Product Group:
Conduit & Raceway
Product Subgroup:
Conduit Bodies & Fittings
Product Material:
Steel
Product Color:
Zinc-Plated
Pack size (unit):
100
Product Finish:
Zinc-Plated
Product Size:
1/2" - 4"
Standards:
NEMA/ANSI FB-1

Topaz Lighting 631SI – Frequently Asked Questions

1) What sizes does the Topaz 631SI set-screw EMT connector come in, and what are the part numbers?
The Topaz set-screw EMT connector with insulated throat runs 1/2 inch through 4 inch trade sizes. Orderable part numbers are 631SI (1/2"), 632SI (3/4"), 633SI (1"), 634SI (1-1/4"), 636SI (2"), 638SI (3"), 639SI (3-1/2") and 640SI (4"). Size is the only thing you pick; material and finish are steel with zinc plating across the range.
2) Is this EMT connector rated for wet or outdoor locations?
No. The Topaz steel set-screw EMT connector is a dry-location fitting. Set-screw fittings do not seal against water at the conduit entry, so for a wet or damp location, a rooftop run, or an exterior box you want a raintight compression-type EMT connector instead. It is concrete tight when taped, which covers pours, but that is not the same as watertight.
3) Does the insulated throat mean I still need a bushing on this connector?
The insulated throat is molded into the connector at the wire entry, so it protects conductor insulation from abrasion as you pull. That is the function a separate insulating bushing would perform on a plain connector, which is why inspectors commonly accept an insulated-throat fitting on its own. Where your local authority or the job spec calls out a specific bushing, follow the spec.
4) Does the Topaz EMT connector come with a locknut, or do I order those separately?
A steel locknut ships with each connector, so the fitting is ready to land in a box knockout out of the bag. Nothing else is required on the connector side. Fittings come 100 to a pack.
5) Set-screw or compression EMT connectors for my conduit run?
Set-screw, like these Topaz steel fittings, is the faster and lower-cost termination and it is what most indoor commercial EMT gets: office ceilings, panel and junction box feeds, renovation work in dry space. Compression fittings earn their keep where the run is wet, damp, outdoors, or exposed to washdown. Both bond EMT to boxes; the difference is the environment, not the strength of the mechanical hold.
6) Will a zinc-plated steel EMT connector hold up in a parking garage or damp basement?
The zinc plating gives corrosion resistance for the dry-location service the fitting is listed for, but a garage deck or a chronically damp basement is not a dry location. In that environment go to a raintight compression fitting or a corrosion-resistant system. Where the conduit is being encased in a concrete pour in an otherwise dry interior, these are concrete tight once taped.
How fast can I get the Topaz Lighting 631SI 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 Topaz Lighting 631SI come with a warranty?
Absolutely. The Topaz Lighting 631SI 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 Topaz Lighting 631SI?
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 Topaz Lighting 631SI from ZenSupply?
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