NSi Industries 249-SBLU - EMT Couplings, Color-Coded, Steel, Blue, Size 4"
NSI Industries

249-SBLU

UPC: 781747202499

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Overview

The NSi Industries 249-SBLU is a 4-inch steel EMT coupling featuring a blue urethane coating for superior corrosion resistance. Manufactured in the US, this coupling includes hot-dipped galvanized threads and a nominal 0.002-inch blue urethane interior coating, ensuring reliable electrical conduit connections in industrial, commercial, and residential applications. The steel construction and color-coded blue design aid in inventory management and installation, meeting industry standards for durability and reliability. With a minimum 0.040-inch PVC coating bonded to the exterior for added protection, this coupling is ideal for EMT conduit systems requiring corrosion-resistant, long-lasting connections. The 249-SBLU is designed to withstand demanding environments, providing secure and consistent performance for electrical installations. Its hot-dipped galvanized threads enhance thread strength and corrosion resistance, while the blue urethane coating ensures easy identification and compliance with safety standards. The coupling's robust construction and protective coatings make it suitable for a wide range of applications, from heavy industrial settings to residential wiring projects.
  • 4-inch steel EMT coupling with blue urethane coating for corrosion resistance
  • Hot-dipped galvanized threads for secure connections
  • Nominal 0.002-inch blue urethane interior coating
  • Minimum 0.040-inch PVC coating bonded to exterior
  • Color-coded design for easy inventory and installation management

Specifications

Color
Blue
Material
Steel
Size
4"
Package Weight (Imperial)
2.530 L
Package Weight (Metric)
1.148 kg

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Frequently Asked Questions

What is the trade size of the 249-SBLU couplings?

The trade size of the couplings is 4 inches.

What materials are used in the 249-SBLU couplings?

The couplings are made of steel and finished with blue paint.

What applications are suitable for the 249-SBLU couplings?

They are suitable for low voltage wiring, data comm/video, and network security applications.

What certifications do the 249-SBLU couplings have?

They are certified under UL Standard UL-514B and Federal Specification A-A-50553.

Are these couplings compatible with aluminum EMT?

Yes, the couplings are listed for use with aluminum EMT.

What is the standard package quantity for the couplings?

The standard package quantity is 6 couplings.

Frequently Asked Questions about NSi Industries

What technical support does NSi Industries offer?

NSi Industries offers dedicated technical support through their toll-free technical support line at 888.500.4598. They are committed to customer satisfaction and promise to make every reasonable effort to remedy any product or service issues. Additionally, customers can contact their customer service team at 800.321.5847 or email [email protected] for further technical assistance.

What are the key features of NSi Industries products?

NSi Industries products feature exceptional versatility, reliability, and safety across multiple industrial automation categories. Key features include insulation piercing connectors with no wire stripping required, watertight and corrosion-free designs, wide wire range compatibility (from #14 AWG to 750 MCM), and the ability to install on energized conductors. Their product lines like Easy-Tap™ Connectors and TORK® Digital Timers demonstrate advanced capabilities such as turbo spacers, double shear-head bolts, astronomic scheduling, and enhanced switching technologies.

What environmental ratings do NSi Industries products have?

NSi Industries enclosures feature robust environmental ratings, including IEC 60529 IP66 certification, NEMA Type 1, 2, 3, 4, 4X, 12, and 13 ratings, and UL/CSA standards. Their products are designed for both indoor and outdoor applications, with protection against dust, water, corrosion, and extreme temperatures ranging from -40°F to 266°F.

How are NSi Industries products typically installed?

NSi Industries products are typically installed using detailed mechanical and digital wiring diagrams that specify precise connection methods for various voltage configurations (120V, 208V, 240V, 277V, 480V). Installation involves carefully following product-specific wiring schematics, which include clear terminal block connections, ground wire specifications, and phase alignment requirements. Professional electricians and technicians should reference the specific product's wiring diagram to ensure correct installation and electrical compliance.

What industries and applications are NSi Industries products used for?

NSi Industries provides electrical and automation products for diverse industrial applications, including lighting control, electrical enclosures, wire management, connectors, and sensor technologies. Their product lines serve commercial, industrial, and infrastructure markets with solutions for electrical infrastructure, control systems, and safety-critical environments.

What are the main product lines offered by NSi Industries?

NSi Industries offers a comprehensive range of industrial products including TORK® Photocontrols, Polaris™ Lighting Controls, Easy-Twist™ Grounding Solutions, Miniterms, Cable Ties, Connectors, Enclosures, Occupancy Sensors, and Wire Management systems. Their product lines span electrical components, control devices, and industrial automation accessories designed for diverse applications in commercial and industrial settings.

What accessories are available for NSi Industries products?

NSi Industries offers a range of accessories for their product lines, including photocontrol accessories like replacement caps, mounting brackets, and receptacles. Specific accessories include shorting caps, open caps, 3-pin and 7-pin receptacles, and utility mounting brackets for conduit photocontrols. For specialized applications, NSi recommends contacting their customer service team to discuss custom accessory needs.