NSI Industries 644 - Connector, Clamp Type, Two-Piece, Steel, Size K.O. 1-1/4 Inch
NSI Industries

644

UPC: 781747006448


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Minimum Qty: 50

Multiplier: 50

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Overview

The NSI Industries 644 is a two-piece, clamp-type steel connector engineered for 1-1/4 inch knockout (K.O.) applications in NM appliance connections. Constructed from durable steel, this connector delivers a secure mechanical joint essential for maintaining electrical continuity and system integrity in industrial and commercial installations. The snap-in design enables rapid, tool-free installation, reducing labor time while ensuring a reliable fit. Its robust steel construction resists physical stress, corrosion, and environmental wear, providing long-term durability in demanding electrical raceways and enclosures. Compatible with standard 1-1/4 inch K.O. openings, the 644 supports efficient assembly in electrical systems where secure, code-compliant connections are required. As part of NSI Industries' trusted line of electrical components, this connector meets industry safety standards and is specified by electricians and contractors for dependable performance in both new construction and retrofit projects. The two-piece clamp design ensures a tight seal around conductors, preventing displacement and maintaining grounding continuity.
  • Two-piece clamp-type design for secure mechanical connections
  • Constructed from durable steel for long-term durability and corrosion resistance
  • Snap-in installation for rapid, tool-free assembly
  • Compatible with 1-1/4 inch knockout (K.O.) openings in NM appliances
  • Maintains electrical continuity and grounding integrity in industrial/commercial systems

Specifications

Application
Used to connect non-metallic cable to box or enclosure, locknut not required.
Cable Entry
Two piece steel clamp with tabs to insert through knockout
Connection Type
Clamp Type
Finish
Zinc Electroplated
Material
Steel
Size
1 1/4 in
Special Features
Cable Range - .250-.980 in
Standard
UL
Trade Size
1.25 in
Type
Connectors
Package Weight (Imperial)
0.119 L
Package Weight (Metric)
0.054 kg
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Frequently Asked Questions

Is a locknut required for installation?

No, a locknut is not required for installation.

What material is the product made of?

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

What are the product certifications?

The product is certified under NEMA Standard FB-1 and UL Standard UL-514B.

What is the trade size of the connector?

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

Where is the product manufactured?

The product is manufactured in the USA.

What is the catalog ID for this product?

The catalog ID for this product is 644.

What is the UPC number for the product?

The UPC number for the product is 781747006448.

What is the standard package quantity?

The standard package quantity is 250 units.

What is the unit quantity for this product?

The unit quantity for this product is 25.

Frequently Asked Questions about NSI Industries

How are Tork products typically installed?

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.

What communication protocols do Tork products support?

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.

What are the main product lines offered by Tork?

Tork offers a diverse range of products primarily focused on industrial automation, including TORK® Photocontrols, lighting controls, and various electrical components such as enclosures, occupancy sensors, and grounding solutions. These products are designed to enhance efficiency and reliability in commercial and industrial applications.

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.

What industries and applications are Tork products used for?

Tork products are utilized across a variety of industries, including food processing, healthcare, hospitality, and manufacturing. They are designed for applications such as hand hygiene, surface cleaning, and dispensing solutions, ensuring efficiency and compliance in environments that require high standards of cleanliness and safety.

What certifications and standards do Tork products comply with?

Tork products comply with UL and cUL certifications, ensuring they meet rigorous safety and performance standards. Additionally, many models are designed to meet NEMA enclosure ratings, providing protection against environmental factors.

How are Remke products typically installed?

Remke products are typically installed through a systematic process that includes site audits to verify proper wiring, followed by remote or on-site commissioning. This commissioning involves installation verification, programming, and communication testing to ensure the system operates reliably and meets design specifications.

What accessories are available for Remke products?

Remke offers a wide range of accessories for their products, including panel mounting kits, fuse holders for voltage inputs, ferrites for communication modules, and current transformers. These accessories enhance the functionality and protection of Remke's industrial automation solutions, ensuring reliable performance in various applications.