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NSI Industries EC-100R - Mighty-Move Expansion Coupling 1" Steel expansion coupling for IMC and Rigid Conduit

NSI Industries EC-100R Mighty-Move Expansion Coupling 1" Steel expansion coupling for IMC and Rigid Conduit

UPC: 781747044020


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Minimum Qty: 10

Multiplier: 10

*Contact for lower quantities*

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The NSI Industries EC-100R Mighty-Move® Expansion Coupling is a 1-inch steel coupling engineered for Intermediate Metal Conduit (IMC) and Rigid Metal Conduit (RMC) systems. This dry-location expansion coupling provides a cost-effective solution for managing thermal expansion and contraction in conduit runs, preventing stress on connections and downstream equipment due to temperature fluctuations. The EC-100R installs like a standard set-screw coupling: slide the fixed end into the coupling, tighten the screw, then install the movable conduit to half the marked engagement distance. Constructed from durable steel with a zinc-plated finish, it meets Federal Specification A-A-50552 and NEMA FB-1 standards. With a compact design (7.5" length, 2.08" diameter), it integrates seamlessly into existing conduit layouts without requiring special tools or modifications. The EC-100R is the economical choice for electrical contractors and facility managers seeking reliable expansion management without sacrificing performance. Compatible with standard 1" IMC and RMC trade sizes, it ensures long-term durability in dry environments while maintaining system flexibility.
  • 1" trade size for standard IMC and Rigid Metal Conduit
  • Zinc-plated steel construction for corrosion resistance
  • Dry-location rated; installs like a standard set-screw coupling
  • Meets Federal Specification A-A-50552 and NEMA FB-1 standards
  • Provides reliable conduit protection and system integrity

Specifications

Application
Assembles like a regular RMC/IMC set screw coupling. To install, simply slide coupling end stop onto fixed end of RMC/IMC and tighten screw. Place movable RMC/IMC completely into coupling and mark engagement, remove RMC/IMC and mark half the distance of engagement, reinstall RMC/IMC to half distance. Patented
Cable Entry
Through Rigid conduit into expansion throat back to conduit
Finish
Zinc Plated
Material
Steel
Size
1 IN
Size
1" in
Special Features
Low Profile; Easy Installation
Special Features
Easy Installation;Low Profile
Standard
UL
Trade Size
1 in
Type
Coupling
Package Weight (Imperial)
0.665 L
Package Weight (Metric)
0.302 kg
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Frequently Asked Questions

What is the trade size of the EC-100R?

The trade size of the EC-100R is 1 inch.

What is the material of the EC-100R?

The EC-100R is made of steel and has a zinc plated finish.

How do I install the EC-100R?

To install, slide the coupling end stop onto the fixed end of RMC/IMC and tighten the screw. Then, mark engagement, remove, mark half the distance, and reinstall.

What is the standard package quantity for EC-100R?

The standard package quantity for the EC-100R is 40 units.

What are the product certifications for EC-100R?

The EC-100R is certified under Federal Specification A-A-50552, NEMA Standard FB-1, and UL Standard 514B.

What is the installation process for the EC-100R?

The installation involves sliding the coupling onto the fixed end, tightening the screw, marking engagement, and reinstalling at half distance.

What is the UPC number for EC-100R?

The UPC number for the EC-100R is 78174704402.

What is the patent number for EC-100R?

The patent number for the EC-100R is 6,715,803.

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