NSi Industries 250-MSRT - Bridgeport Fittings Mighty-Seal 1/2 inch EMT Connectors are used to connect a 1/2 inch EMT raceway to a box, device or enclosure.  The 250MSRT 1/2 inch Mighty-Seal« connector is UL listed for use in wet locations. Raintight. Patented
NSI Industries

250-MSRT

UPC: 781747172501


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Overview

The NSI Industries 250-MSRT, part of the Bridgeport Fittings Mighty-Seal line, is a patented 1/2 inch EMT connector designed for efficient and reliable termination of Electrical Metallic Tubing (EMT) to boxes, devices, or enclosures. This connector offers a significant installation advantage, requiring no tools and a simple push-on action, resulting in up to 75% faster installation times compared to traditional methods. Its removable design adds flexibility to your project planning. Engineered for demanding conditions, the 250-MSRT is UL listed for use in wet locations and is certified raintight, ensuring a secure and protected connection even when exposed to the elements. The rugged all-steel construction, electro-zinc plated for corrosion resistance, guarantees durability. A key feature is the integrated nylon insulator, which protects conductors during wire pulling, reduces pulling effort, and prevents thread damage. This insulator is thermoplastic, U.L. rated to 105°C. The connector's locknut design ensures a positive bond between the conduit and the fitting, and between the fitting and the box or enclosure, assuring ground continuity. The extended reach of the locknut is specifically designed to secure the fitting onto thin boxes or enclosures. This fitting conforms to UL 514B, CSA C22.2 No. 18, NFPA 70-1999 (ANSI), NEMA FB1, and Federal Specification W-F-408 standards, and its threads conform to Federal Standard H-28. It is ideal for applications requiring a raintight connection between EMT and enclosures, or for coupling ends of EMT. The Mighty-Seal connector is a time-saving, robust solution for ensuring secure and protected electrical connections in various environments. SKU: 250-MSRT.
  • Patented push-on design for 75% faster installation, no tools required.
  • UL listed for wet locations and raintight for outdoor/exposed applications.
  • Rugged all-steel construction with electro-zinc plating for durability.
  • Nylon insulator protects conductors, reduces wire pulling effort, and prevents thread damage.
  • Ensures positive bonding and ground continuity between EMT, fitting, and enclosure.

Specifications

Application
Used to join EMT to box or enclosure. Concrete tight/raintight
Connection Type
Push-in
Connector Type
PUSH-EMT®
Finish
Ball burnish
Insulation
False
Ip Rating
IP66/IP67
Material Quality
Zinc Die Cast
Nema Rating
Type 4X
Size
1/2"
Size
1/2 IN
Special Features
Connectors assembled with knockout gasket, no separate pieces to buy and stock
Standard
cULus
Trade Size
1/2 in.
Type
Connector
Package Weight (Imperial)
0.170 L
Package Weight (Metric)
0.077 kg

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Frequently Asked Questions

Is the 250-MSRT connector suitable for wet locations?

Yes, the 250-MSRT connector is UL listed for use in wet locations.

What is the trade size of the 250-MSRT connector?

The trade size of the 250-MSRT connector is 1/2 inch.

How is the 250-MSRT connector installed?

Installation involves inserting a properly deburred end of EMT into the Mighty-Seal® and rotating until it reaches the end stop.

What are the certifications for the 250-MSRT connector?

The connector has certifications including UL, cULus, and complies with Federal Specification A-A-50553.

What material is the 250-MSRT connector made of?

The 250-MSRT connector is made of zinc die cast.

How do you remove the 250-MSRT connector?

Removal is done by loosening the nut and taking out the component parts from the conduit.

Where is the 250-MSRT connector manufactured?

The 250-MSRT connector is manufactured in the USA.

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.