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NSI Industries UC-147 - The NSI UC-147 Bronze Heavy Duty U-Bolt Clamp is designed to grip rods and ground 3-1/2" IPS pipes in parallel or 90-degree positions with an easily adjusted, durably strong design. The high-copper-content alloy of the clamp provides excellent conductivity and heavy-duty strength, alongside the silicon bronze nuts and lockwashers. Use this U-bolt for demanding applications in harsh environments, including direct burial in earth or concrete. UL Listed 467 for Grounding and Bonding. Stock products you can rely on—stock NSI.
NSI Industries

UC-147

UPC: 662381108203

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Overview

The NSI UC-147 Bronze Heavy Duty U-Bolt Clamp (SKU: UC-147) is a UL 467 listed grounding and bonding solution designed for secure, high-conductivity connections in demanding industrial environments. Constructed from high-copper-content silicon bronze alloy, this clamp delivers superior electrical conductivity and corrosion resistance, making it ideal for harsh applications including direct burial in earth or concrete. The UC-147 accommodates 3-1/2" IPS pipes and 1/2" to 1" ground rods, with an adjustable design that allows installation in parallel or 90-degree positions. The clamp features silicon bronze nuts and lockwashers for a reliable, vibration-resistant grip, ensuring long-term performance in critical grounding systems. Certified for grounding and bonding applications, the UC-147 meets stringent UL 467 standards for safety and reliability. This heavy-duty clamp is engineered for utility, telecommunications, and industrial installations where durability and electrical integrity are critical. Its robust construction resists corrosion and mechanical stress, making it suitable for outdoor and underground use. The UC-147’s adjustable design simplifies installation, allowing for quick adaptation to different pipe and rod configurations without compromising strength. The inclusion of silicon bronze nuts and lockwashers enhances the clamp’s resistance to loosening under vibration, ensuring a stable connection over time. NSI Industries, a US-based manufacturer, guarantees consistent quality and performance for all grounding products. The UC-147 is part of NSI’s stock offerings, providing reliable availability for immediate use in professional electrical and grounding applications. With its UL 467 certification, this clamp meets industry standards for grounding and bonding, offering a trusted solution for electricians and engineers requiring a durable, high-performance component.
  • Heavy-Duty Strength: NSI bronze U-bolt clamps provide unmatched strength and durability when grounding rods to pipes in demanding environments
  • Range of Sizes: U-bolt clamps are available in sizes that fit ground rods from 1/2" to 1" in diameter and pipes from 1/4" to 3-1/2" in diameter for expanded versatility in the field
  • Parallel or 90 Degrees: Flexible design of the gripping jaws allow for the grounding rod to be attached in parallel, or at a 90-degree angle with the pipe
  • Direct Burial: Built with enough strength for the harshest environments, including direct burial in earth or concrete
  • Silicon bronze nuts and lockwashers for reliable, vibration-resistant grip
  • Suitable for direct burial in earth or concrete
  • Made in the USA by NSI Industries

Specifications

Application
Grounding Wire
Clamp Material
2/0-4 AWG
Insulation Material
Silicon Bronze
Material
Bronze
Material
Silicon Bronze
Material
Bronze (High-Copper-Content Alloy, Silicon Bronze Nuts and Lockwashers)
Series
UC
Size
3-1/2" IPS
Size
3-1/2" IPS pipes
Special Features
3 1/2 Pipe Size IN
Standard
UL467
Type
Heavy Duty Ground Connector For Parrallel Copper Cables
Warranty
1 Year
Package Dimensions (L x W x H)
1.864 IN x 5.281 IN x 6 IN
Package Dimensions (L x W x H)
4.7346 cm x 13.4137 cm x 15.24 cm
Package Weight (Imperial)
1.552 L
Package Weight (Metric)
0.704 kg
The NSI UC-242 Bronze Heavy Duty U-Bolt Clamp is designed to grip ground pipes with a 3" diameter in parallel or 90-degree positions with an easily adjusted, durably strong design. The high-copper-content alloy of the clamp provides excellent conductivity and heavy-duty strength, alongside the silicon bronze nuts and lockwashers. 200- series U-bolt clamps fit two individual conductors for grounding on the same pipe. Use this U-bolt for demanding applications in harsh environments, including direct burial in earth or concrete. UL Listed 467 for Grounding and Bonding. Stock products you can rely on—stock NSI.

UC-242

The NSI UC-242 Bronze Heavy Duty U-Bolt Clamp is designed to grip ground pipes with a 3" diameter in parallel or 90-degree positions with an easily adjusted, durably strong design. The high-copper-content alloy of the clamp provides excellent conductivity and heavy-duty strength, alongside the silicon bronze nuts and lockwashers. 200- series U-bolt clamps fit two individual conductors for grounding on the same pipe. Use this U-bolt for demanding applications in harsh environments, including direct burial in earth or concrete. UL Listed 467 for Grounding and Bonding. Stock products you can rely on—stock NSI.
Bronze Ground Clamp Connector, 3-Wire, Parallel to Pipe, 4 AWG SOL - 250 kcmil, 3/4" Pipe Size

GTW050-250-1

Bronze Ground Clamp Connector, 3-Wire, Parallel to Pipe, 4 AWG SOL - 250 kcmil, 3/4" Pipe Size
Copper Flexible Sleeve with a .579" ID for use with fine-stranded and flexible wire. Tin-plated for corrosion resistance.

FS020

Copper Flexible Sleeve with a .579" ID for use with fine-stranded and flexible wire. Tin-plated for corrosion resistance.
NSI GLC-12DB Heavy Duty Direct Burial Ground Clamps grip on pipes between 1/2" to 1" in diameter and are the ultimate ground clamps for securing just about any size ground wire in just about any application. The bronze body and pre-assembled 304 stainless steel screws are made of economical, high-quality metals that provide durable performance in a range of applications. The lay-in lug design of these clamps provides ultimate flexibility when securing large conductors and can accommodate wires in the range of 10 to 2 STR. Use this heavy-duty ground clamp to secure ground wire to copper water pipes, tubing, rebar and ground rods up to 1" in diameter. UL Listed for direct burial in both earth and concrete. UL Listed 467 for grounding and bonding. Stock products you can rely on—stock NSI.

GLC-12DB

NSI GLC-12DB Heavy Duty Direct Burial Ground Clamps grip on pipes between 1/2" to 1" in diameter and are the ultimate ground clamps for securing just about any size ground wire in just about any application. The bronze body and pre-assembled 304 stainless steel screws are made of economical, high-quality metals that provide durable performance in a range of applications. The lay-in lug design of these clamps provides ultimate flexibility when securing large conductors and can accommodate wires in the range of 10 to 2 STR. Use this heavy-duty ground clamp to secure ground wire to copper water pipes, tubing, rebar and ground rods up to 1" in diameter. UL Listed for direct burial in both earth and concrete. UL Listed 467 for grounding and bonding. Stock products you can rely on—stock NSI.
NSI GLC-240DB Heavy Duty Direct Burial Ground Clamps grip on pipes between 1-1/4" to 2" in diameter and are the ultimate ground clamps for securing just about any size ground wire in just about any application. The bronze body and pre-assembled 304 stainless steel screws are made of economical, high-quality metals that provide durable performance in a range of applications. The lay-in lug design of these clamps provides ultimate flexibility when securing large conductors and can accommodate wires in the range of 8 to 4/0 STR. Use this heavy-duty ground clamp to secure ground wire to copper water pipes, tubing, rebar and ground rods up to 2" in diameter. UL Listed for direct burial in both earth and concrete. cULus Listed 467 for grounding and bonding. Stock products you can rely on—stock NSI.

GLC-240DB

NSI GLC-240DB Heavy Duty Direct Burial Ground Clamps grip on pipes between 1-1/4" to 2" in diameter and are the ultimate ground clamps for securing just about any size ground wire in just about any application. The bronze body and pre-assembled 304 stainless steel screws are made of economical, high-quality metals that provide durable performance in a range of applications. The lay-in lug design of these clamps provides ultimate flexibility when securing large conductors and can accommodate wires in the range of 8 to 4/0 STR. Use this heavy-duty ground clamp to secure ground wire to copper water pipes, tubing, rebar and ground rods up to 2" in diameter. UL Listed for direct burial in both earth and concrete. cULus Listed 467 for grounding and bonding. Stock products you can rely on—stock NSI.
NSI GLC-440DB Heavy Duty Direct Burial Ground Clamps grip on pipes between 1-2-1/2" to 4" in diameter and are the ultimate ground clamps for securing just about any size ground wire in just about any application. The bronze body and pre-assembled 304 stainless steel screws are made of economical, high-quality metals that provide durable performance in a range of applications. The lay-in lug design of these clamps provides ultimate flexibility when securing large conductors and can accommodate wires in the range of 8 to 4/0 STR. Use this heavy-duty ground clamp to secure ground wire to copper water pipes, tubing, rebar and ground rods up to 4" in diameter. UL Listed for direct burial in both earth and concrete. cULus Listed 467 for grounding and bonding. Stock products you can rely on—stock NSI.

GLC-440DB

NSI GLC-440DB Heavy Duty Direct Burial Ground Clamps grip on pipes between 1-2-1/2" to 4" in diameter and are the ultimate ground clamps for securing just about any size ground wire in just about any application. The bronze body and pre-assembled 304 stainless steel screws are made of economical, high-quality metals that provide durable performance in a range of applications. The lay-in lug design of these clamps provides ultimate flexibility when securing large conductors and can accommodate wires in the range of 8 to 4/0 STR. Use this heavy-duty ground clamp to secure ground wire to copper water pipes, tubing, rebar and ground rods up to 4" in diameter. UL Listed for direct burial in both earth and concrete. cULus Listed 467 for grounding and bonding. Stock products you can rely on—stock NSI.
NSI GLC-12RDB Heavy Duty Direct Burial Ground Clamps grip on pipes between 1/2" to 1" in diameter and are the ultimate ground clamps for securing just about any size ground wire in just about any application. The bronze body and pre-assembled 304 stainless steel screws are made of economical, high-quality metals that provide durable performance in a range of applications. The lay-in lug design of these clamps provides ultimate flexibility when securing large conductors and can accommodate wires in the range of 10 to 2 STR running in a perpendicular direction to the pipe or rod. Use this heavy-duty ground clamp to secure ground wire to copper water pipes, tubing, rebar and ground rods up to 1" in diameter. UL Listed for direct burial in both earth and concrete. UL Listed 467 for grounding and bonding. Stock products you can rely on—stock NSI.

GLC-12RDB

NSI GLC-12RDB Heavy Duty Direct Burial Ground Clamps grip on pipes between 1/2" to 1" in diameter and are the ultimate ground clamps for securing just about any size ground wire in just about any application. The bronze body and pre-assembled 304 stainless steel screws are made of economical, high-quality metals that provide durable performance in a range of applications. The lay-in lug design of these clamps provides ultimate flexibility when securing large conductors and can accommodate wires in the range of 10 to 2 STR running in a perpendicular direction to the pipe or rod. Use this heavy-duty ground clamp to secure ground wire to copper water pipes, tubing, rebar and ground rods up to 1" in diameter. UL Listed for direct burial in both earth and concrete. UL Listed 467 for grounding and bonding. Stock products you can rely on—stock NSI.
The NSI GRC-3834 Heavy Duty Silicon Bronze Range Taking Rod Clamp is the ultimate solution for flexible grounding to ground rods and rebar in direct burial applications. The heavy-duty silicon bronze construction enables the rod clamp to handle large ground wires up to 1/0 AWG. The special design of this clamp makes it compatible with 3/8", 1/2", 5/8" and 3/4" rebar and ground rods. Available with silicon bronze screws by adding suffix –SB, the GRC-3834 offers durable performance in tough environments. Ground rod clamp is UL Listed for direct burial in both earth and concrete. Stock products you can rely on—stock NSI.

GRC-3834

The NSI GRC-3834 Heavy Duty Silicon Bronze Range Taking Rod Clamp is the ultimate solution for flexible grounding to ground rods and rebar in direct burial applications. The heavy-duty silicon bronze construction enables the rod clamp to handle large ground wires up to 1/0 AWG. The special design of this clamp makes it compatible with 3/8", 1/2", 5/8" and 3/4" rebar and ground rods. Available with silicon bronze screws by adding suffix –SB, the GRC-3834 offers durable performance in tough environments. Ground rod clamp is UL Listed for direct burial in both earth and concrete. Stock products you can rely on—stock NSI.

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.