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NSI Industries 257-US - Connector, Compression, Made in the USA, Size 3 Inch.
NSI Industries

257-US

UPC: 781747022578


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Overview

The NSi Industries 257-US is a UL486A-listed compression connector engineered for reliable copper cable connections in industrial applications. Manufactured in the USA, this 3-inch steel connector supports flexible and extra-flexible cables including locomotive, welding, and mining cables. Key features include a continuous flared end for easy cable insertion, reduced pressure on cable strands to prevent chafing and breakage, and tin-plating for superior corrosion resistance. The connector meets a 90°C temperature rating and 600V maximum voltage, making it suitable for demanding environments. Designed with NEMA-spaced mounting holes (1¾"), the 257-US ensures secure installation and compatibility with ASTM Class H and M cables. Ideal for fluid and gas transfer systems, power distribution, and heavy-duty machinery where leak-proof, durable connections are critical. Compatible with NSI N12ID dieless compression tools for expanded wire range installation.
  • UL486A-listed for copper cables only
  • 3-inch size with 90°C temperature rating and 600V maximum voltage
  • Continuous flared end for easy cable insertion and reduced strand damage
  • Tin-plated steel construction for corrosion resistance
  • NEMA-spaced mounting holes (1¾") for secure installation

Specifications

Application
Compression type connectors used to join EMT to box or enclosure. Concrete Tight. Made in the USA
Connector Type
Compression
Finish
Zinc Electroplated
Insulation
False
Material Quality
Steel
Size
3 IN
Special Features
Concrete tight
Standard
UL
Trade Size
3 in.
Type
Connector
Package Weight (Imperial)
3.320 L
Package Weight (Metric)
1.506 kg
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Frequently Asked Questions

What is the country of manufacture?

The connector is manufactured in the USA.

What is the country of manufacture?

The connector is manufactured in the USA.

What is the size of the connector?

The connector is a 3-inch compression type connector.

What is the UPC number for the connector?

The UPC number for the connector is 78174702257.

What is the catalog ID for this product?

The catalog ID for this product is 257-US.

How many connectors are in a standard package?

A standard package contains 10 connectors.

What is the UPC number for the connector?

The UPC number for the connector is 78174702257.

What is the catalog ID for this product?

The catalog ID for this product is 257-US.

What is the size of the connector?

The connector is a 3-inch compression type connector.

How many connectors are in a standard package?

A standard package contains 10 connectors.

Frequently Asked Questions about NSI Industries

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Tork products are typically installed by trained technicians who follow a comprehensive commissioning process. This includes verifying the work environment, conducting electrical installation checks, performing internal and external equipment inspections, powering on the system, and executing operational tests to ensure compatibility and reliability.

What environmental ratings do Tork products have?

Tork products are designed to meet various environmental ratings, including NEMA Type 4X and Type 6, which provide protection against corrosion, windblown dust, rain, and occasional temporary submersion. These ratings ensure that Tork products can withstand harsh industrial environments while maintaining operational integrity.

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Tork products support a comprehensive range of communication protocols, including PROFIBUS DP V1, PROFINET with dual port, EtherNet/IP with dual port, CANopen, and Modbus RTU integrated as standard. These protocols facilitate flexible network integration and high-performance communication across various industrial automation systems.

What are the key features of Tork products?

Tork products are designed with advanced features that enhance efficiency and reliability in industrial applications. Key features include integrated harmonics and EMC design for improved power quality, removable terminals for quick installation, and USB ports for easy troubleshooting. Additionally, Tork solutions emphasize user-friendly setup with application wizards and memory modules for convenient parameter management.

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What technical support does Tork offer?

Tork offers a comprehensive range of technical support services, including 24/7 customer support, on-site service management, and a technical hotline network. With three advanced technical support centers and over 8,000 hours of technical training conducted annually, Tork ensures certified expertise across 25+ languages to assist customers effectively. Their commitment to service is reflected in a 98% Service Level Agreement compliance rate, providing reliable support for all operational needs.

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