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NSI Industries 250-USI - Connector, compression, steel, 105 Degree C insulated throat, size 1/2"
NSI Industries

250-USI

UPC: 781747222503


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Overview

The NSi Industries 250-USI compression connector (SKU: 250-USI) is a UL486A-listed steel connector engineered for reliable industrial electrical applications. Rated for 600V and 90°C operation, this 1/2" size connector features a 105°C insulated throat to enhance thermal performance and safety. Constructed from corrosion-resistant tin-plated steel, it ensures long-term durability in demanding environments. The connector accommodates copper cables from 250 MCM to 1/0 AWG, with flared openings for easy insertion of flexible and extra-flexible cables such as locomotive, welding, and mining cables. A positive center stop ensures consistent crimping, while the expanded wire range is achieved when installed with the NSi N12ID dieless compression tool. The 250-USI is designed for use in HVAC systems, plumbing applications, industrial machinery, and electrical distribution systems, providing secure, long-lasting connections. It holds UL486A and cULus 155027 certifications, ensuring compliance with industry safety standards. Compatible exclusively with the NSi N12ID tool for optimized performance and expanded wire range.
  • UL486A and cULus 155027 certified for compliance and safety
  • Rated for 600V and 90°C operation with 105°C insulated throat
  • Accommodates copper cables from 250 MCM to 1/0 AWG
  • Flared openings for easy insertion of flexible and extra-flexible cables
  • Tin-plated steel construction for corrosion resistance and durability

Specifications

Application
Compression type connectors used to join EMT to box or enclosure. Concrete Tight. Made in the USA! Insert UL bug. Insulated Throat -105degreeC.
Connection Type
Compression
Connector Type
Compression
Finish
Zinc Electroplated
Insulation
Insulated Throat
Material
Tin-plated steel
Material Quality
Steel
Series
250-USI
Size
1/2 IN
Special Features
Concrete tight
Standard
cULus
Temperature Rating, Maximum
221 F
Temperature Rating, Maximum
105 C
Temperature Rating, Minimum
221 F
Temperature Rating, Minimum
105 C
Trade Size
1/2 in.
Type
Connector
Voltage Rating
600 V
Package Weight (Imperial)
0.081 L
Package Weight (Metric)
0.037 kg
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Frequently Asked Questions

What is the trade size of the connector?

The trade size of the connector is 1/2 inch.

How many connectors are in a standard package?

A standard package contains 250 connectors.

Where is the connector manufactured?

The connector is manufactured in the USA.

What is the material of the connector?

The connector is made of steel with a zinc electro-plate finish.

What certifications does the connector have?

The connector is certified under UL Standard UL-514B and complies with Federal Specification A-A-50553.

What is the dimension A of the connector?

Dimension A of the connector is 1.750 inches.

What is the dimension B of the connector?

Dimension B of the connector is 1.250 inches.

What is the dimension C of the connector?

Dimension C of the connector is 0.408 inches.

What is the maximum operating temperature?

The connector has an insulated throat rated for a maximum temperature of 105°C.

What is the purpose of the connector?

The connector is used to join EMT to a box or enclosure.

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