Topaz Lighting 634 Zinc Die-Ca...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2.13
Topaz Lighting 634 Zinc Die-Cast Set-Screw EMT Connector

Topaz Lighting 634 Zinc Die-Cast Set-Screw EMT Connector

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Model: 634

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

$2.13
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Topaz Lighting 634 Zinc Die-Cast Set-Screw EMT Connector

Topaz Lighting Zinc Die-Cast Set-Screw EMT Connectors bond EMT thin-wall conduit to electrical boxes and enclosures in dry-location installations, and this family is available in trade sizes from 1-1/4" through 4". Built from durable zinc die-cast material for superior corrosion resistance, each connector uses a set-screw connection for a secure mechanical bond and is concrete-tight when taped. Models in the 2-1/2" to 4" range are also suitable for use with rigid conduit. UL Listed and compliant with NEMA/ANSI FB-1, these connectors are a reliable choice for commercial and industrial electrical raceway systems.

Key Features

  • Trade Size Range: Available in 1-1/4" through 4" trade sizes to accommodate a wide variety of EMT conduit installations.
  • Durable Construction: Manufactured from zinc die-cast material, providing superior corrosion resistance and long-lasting durability in demanding electrical environments.
  • Set-Screw Connection: Set-screw type assembly ensures a secure, reliable mechanical connection between EMT thin-wall conduit and electrical boxes or enclosures.
  • Concrete-Tight When Taped: Provides concrete-tight protection when taped, making these connectors suitable for use in concrete-encased applications.
  • Dual Conduit Compatibility: Sizes 2-1/2" to 4" are suitable for both EMT and rigid conduit, offering added installation flexibility.
  • Location Rating: Rated for use in dry locations, ideal for interior commercial and industrial electrical installations.

Certifications & Compliance

  • UL Listed
  • NEMA/ANSI FB-1 Compliant
  • Concrete-Tight When Taped

Technical Specifications

  • Conduit Type: EMT
  • Connection Type: Set Screw
  • Pack Size: 100

Typical Applications

  • Bonding EMT thin-wall conduit to electrical boxes and enclosures
  • Commercial and industrial electrical raceway systems
  • Dry-location interior conduit installations
  • Concrete-encased conduit systems (when taped)
  • New construction and renovation electrical projects
  • Rigid conduit connections for sizes 2-1/2" to 4"

Why Topaz Lighting?

Topaz Lighting EMT connectors are built from durable zinc die-cast construction, delivering superior corrosion resistance and dependable mechanical performance across the full 1-1/4" to 4" trade size range. Each connector is UL Listed and NEMA/ANSI FB-1 compliant, ensuring code-compliant installations that professionals can trust. Topaz Lighting's commitment to quality materials and rigorous standards makes this connector family a go-to solution for reliable EMT 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:
Zinc Die-Cast
Pack size (unit):
100
Product Size:
1-1/4" - 4"
Standards:
NEMA/ANSI FB-1

Topaz Lighting 634 – Frequently Asked Questions

1) Can the Topaz 634 set-screw EMT connector be used outdoors or in wet locations?
No. The Topaz zinc die-cast set-screw EMT connectors are rated for dry locations only, so keep them to interior runs. They are concrete-tight when taped, which covers concrete-encased work, but that is not the same as a wet-location or raintight rating. For exposed exterior conduit you need a raintight compression fitting instead.
2) What trade sizes do the Topaz zinc die-cast set-screw EMT connectors come in?
The family runs 1-1/4 inch through 4 inch. The orderable sizes are 1-1/4 inch (model 634), 1-1/2 inch (635), 2-1/2 inch (637), 3-1/2 inch (639) and 4 inch (640). Match the connector to the trade size of the EMT, not to the knockout, and use the right reducing washers at the box if the knockout is larger.
3) Are these Topaz EMT connectors UL Listed and will they pass inspection on a commercial job?
They are UL Listed and built to NEMA/ANSI FB-1, which is the fittings standard inspectors and specs reference for EMT connectors. Installed in a dry location on EMT within the listed trade size, they are a code-compliant termination into boxes and enclosures.
4) Set screw or compression EMT connector, which should I be using?
Set-screw, like these Topaz zinc die-cast units, is the standard choice for dry interior commercial and industrial raceway: quick to install, one screw clamps the EMT, and it is concrete-tight when taped for slab work. Compression fittings are what you move to when the run is damp, wet, or exposed, or where the spec calls for a raintight fitting. Both bond the EMT to the box mechanically; the difference is the environment they are listed for.
5) Can these connectors be poured into concrete?
Yes, when taped. The Topaz set-screw EMT connectors are concrete-tight when taped, so they can be used in concrete-encased raceway. Tape the fitting and the EMT joint before the pour to keep wet concrete out of the raceway.
6) Do these EMT connectors provide the equipment ground bond, or do I need a separate bonding bushing?
The set-screw connection makes a secure mechanical and electrical bond between the EMT and the box or enclosure, which is the fitting's job here and why they are listed to NEMA/ANSI FB-1. Where your spec or the circuit requires a bonding jumper or bonding-type bushing, that is an additional item, not part of the connector.
7) How many Topaz 634 EMT connectors come in a pack?
They are packed 100 to the unit across the size range, so ordering is by the hundred rather than by the piece. Worth factoring in if you only need a handful for a small renovation panel feed.
How fast can I get the Topaz Lighting 634 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 634 come with a warranty?
Absolutely. The Topaz Lighting 634 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 634?
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 634 from ZenSupply?
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