Contact for Pricing
Overview
- 4-inch size for EMT conduit
- Durable steel construction
- Protective black coating for corrosion resistance
- Color-coded for easy identification
- Manufactured in the USA by NSi Industries
Specifications
Application | Bridgeport's Color Coded set screw couplings are used to join two lengths of EMT. Color coded black to match EMT for easy identification. Use with black EMT in dark colored areas or in open architecture applications. |
Color | Black |
Insulated | No |
Material Quality | Steel |
Special Features | Furnished with Tri-Drive slot/Phillips/Robertson head screws. Also listed for use with Aluminum EMT. |
Standard | UL |
Trade Size | 4 in. |
Type | EMT Coupling |
Package Weight (Imperial) | 2.530 L |
Package Weight (Metric) | 1.148 kg |
Frequently Asked Questions
What is the trade size of the 249-SBLK couplings?
The trade size of the 249-SBLK couplings is 4 inches.
How many couplings are in a standard package?
A standard package contains 6 couplings.
What materials are used in the 249-SBLK couplings?
The 249-SBLK couplings are made of steel and finished with black paint.
What is the purpose of the color coding?
The color coding is black to match EMT for easy identification.
What is the patent number for this product?
The patent number for the 249-SBLK couplings is US Patent 6,861,585.
Are these couplings compatible with aluminum EMT?
Yes, the couplings are listed for use with aluminum EMT.
What certifications does the 249-SBLK coupling have?
The couplings meet Federal Specification Number A-A-50553 and UL Standard UL-514B.
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.
