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NSI Industries 233-USI - Connector, Set Screw, Made in the USA Steel, Insulated Throat, Size 1 1/4 Inch. Rated 105 Degree C
NSI Industries

233-USI

UPC: 781747242334


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Multiplier: 20

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Overview

The NSi Industries 233-USI is a 1 1/4-inch steel set screw connector designed for reliable electrical installations in industrial and commercial settings. Constructed from durable steel, this connector features an insulated throat that reduces wire pulling effort by up to 50%, simplifying installation while protecting conductors. The insulated throat is made from a high-temperature-resistant material, ensuring long-term performance in demanding environments. Rated for 105°C operation, it withstands elevated temperatures common in industrial applications without compromising integrity. The set screw design ensures positive holding strength and grounding capabilities, eliminating the need for conduit threading. This connector meets UL 514B and CSA C22.2 No. 18 standards, with UL (File No: E-23018) and CSA (LR-2884, LR-4484) listings. It is also approved for concrete-tight applications, making it suitable for rugged environments where moisture and debris resistance is critical. Compatible with rigid and intermediate metal conduit, the 233-USI provides a secure, long-lasting connection for electrical systems requiring mechanical integrity and compliance with industry standards. The steel construction ensures durability, while the set screw mechanism allows for quick and tool-free installation in tight spaces.
  • 1 1/4" steel set screw connector for rigid/intermediate metal conduit
  • Insulated throat reduces wire pulling effort by up to 50%
  • Rated 105°C for high-temperature applications
  • UL 514B and CSA C22.2 No. 18 compliant, UL (E-23018) and CSA (LR-2884, LR-4484) listed
  • Concrete-tight approval for rugged environments

Specifications

Application
Used to secure steel EMT to box or enclosure. Concrete tight when taped. Rated 105degreeC
Connection Type
Set Screw
Connector Type
Set Screw
Finish
Zinc Electroplated
Insulation
Insulated Throat
Material
Steel
Material Quality
Steel
Series
233-USI
Size
1 1/4 in
Special Features
Concrete tight
Standard
UL
Temperature Rating, Maximum
221 F
Temperature Rating, Maximum
105 C
Temperature Rating, Minimum
221 F
Temperature Rating, Minimum
105 C
Trade Size
1-1/4 in.
Type
Connector
Package Weight (Imperial)
0.516 L
Package Weight (Metric)
0.234 kg
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Frequently Asked Questions

What is the standard package quantity for this product?

The standard package quantity for the 233-USI connector is 120 units.

What is the primary application of the 233-USI connector?

The 233-USI connector is used to secure steel EMT to a box or enclosure.

What material is the 233-USI connector made from?

The 233-USI connector is made from steel.

What is the finish of the 233-USI connector?

The connector has a Zinc Electro-Plated finish.

What is the temperature rating for this connector?

The 233-USI connector is rated for 105°C.

What are the key dimensions of the 233-USI connector?

Dimension A is 2.750 inches, Dimension B is 2.000 inches, and Dimension C is 0.500 inches.

Is this connector suitable for concrete applications?

Yes, the 233-USI connector is concrete tight when taped.

What is the trade size of the 233-USI connector?

The trade size of the 233-USI connector is 1-1/4 inches.

What certifications does the 233-USI connector hold?

It is certified under Federal Specification W-F-408E, NEMA Standard FB-1, UL File E24001, and UL Standard UL514B.

Where is the 233-USI connector manufactured?

The 233-USI connector is manufactured in the USA.

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