NSi Industries 250-USI - Connector, compression, steel, 105 Degree C insulated throat, size 1/2"
NSI Industries

250-USI

UPC: 781747222503


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Minimum Qty: 25

Multiplier: 25

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Overview

The NSi Industries 250-USI compression connector (SKU: 250-USI) is a UL486A-listed steel connector designed for reliable industrial applications. Rated for 600V and 90°C operation, this 1/2" size connector features a 105°C insulated throat for enhanced thermal performance and safety. Constructed from corrosion-resistant tin-plated steel, it ensures long-term durability in demanding environments. The connector accommodates copper cables from 250 MCM to 1/0 AWG, with flared openings for easy insertion of flexible and extra-flexible cables such as locomotive, welding, and mining cables. A positive center stop ensures consistent crimping, while the expanded wire range is achieved when installed with the NSi N12ID dieless compression tool. Ideal for HVAC, plumbing, industrial machinery, and electrical systems, the 250-USI provides secure, long-lasting connections with UL486A and cULus 155027 certifications.
  • UL486A and cULus 155027 listed for compliance and safety
  • Rated for 600V and 90°C operation with 105°C insulated throat
  • Accommodates copper cables from 250 MCM to 1/0 AWG
  • Tin-plated steel construction for corrosion resistance
  • Flared openings for easy insertion of flexible cables

Specifications

Application
Compression type connectors used to join EMT to box or enclosure. Concrete Tight. Made in the USA! Insert UL bug. Insulated Throat -105degreeC.
Connector Type
Compression
Finish
Zinc Electroplated
Insulation
Insulated Throat
Material Quality
Steel
Size
1/2 IN
Special Features
Concrete tight
Standard
cULus
Temperature Rating, Maximum
221.00000 F
Temperature Rating, Maximum
105 °C
Temperature Rating, Maximum
221 F
Temperature Rating, Maximum
105 C
Temperature Rating, Minimum
221.00000 F
Temperature Rating, Minimum
221 F
Temperature Rating, Minimum
105 C
Trade Size
1/2 in.
Type
Connector
Package Weight (Imperial)
0.081 L
Package Weight (Metric)
0.037 kg

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Frequently Asked Questions

What is the trade size of the connector?

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

How many connectors are in a standard package?

A standard package contains 250 connectors.

Where is the connector manufactured?

The connector is manufactured in the USA.

What is the material of the connector?

The connector is made of steel with a zinc electro-plate finish.

What certifications does the connector have?

The connector is certified under UL Standard UL-514B and complies with Federal Specification A-A-50553.

What is the dimension A of the connector?

Dimension A of the connector is 1.750 inches.

What is the dimension B of the connector?

Dimension B of the connector is 1.250 inches.

What is the dimension C of the connector?

Dimension C of the connector is 0.408 inches.

What is the maximum operating temperature?

The connector has an insulated throat rated for a maximum temperature of 105°C.

What is the purpose of the connector?

The connector is used to join EMT to a box or enclosure.

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.