NSI Industries TWB-58 - Bushing, Insulating, Polyethylene, Trade Size 3 Inch
NSI Industries

TWB-58

UPC: 781747400581


Documents & Media
Specification SheetVideo ClipWarranty

Contact for Pricing

Overview

NSI Industries TWB-58 is a polyethylene insulating bushing designed for 3-inch trade size conduit systems. This bushing provides electrical insulation and mechanical protection by preventing metal-to-metal contact between conduit and enclosure entries. Made from durable polyethylene, it resists moisture, chemicals, and abrasion, ensuring long-term reliability in industrial environments. The TWB-58 is manufactured in the US by NSI Industries, a trusted provider of industrial components. It is ideal for electrical installations requiring insulation and protection, such as manufacturing plants, commercial buildings, and infrastructure projects. The bushing’s trade size compatibility ensures seamless integration with standard 3-inch conduit systems. Polyethylene material offers dielectric strength sufficient for low-voltage applications, while its chemical resistance protects against corrosive environments. The design minimizes installation time by fitting standard conduit without additional adapters. NSI Industries delivers this cost-effective solution to maintain safety and compliance in electrical systems.
  • Trade size 3-inch for standard conduit compatibility
  • Polyethylene construction resists moisture, chemicals, and abrasion
  • Prevents metal-to-metal contact to reduce short circuit risk
  • Manufactured in the US by NSI Industries
  • Ideal for industrial, commercial, and infrastructure electrical installations

Specifications

Application
Bushing insulates nonmetallic low voltage cabling (telephone, computer, video, data cables) sharp edges in EMT.
Bushing Type
Insulating
Color
White
Finish
No Finish
Material
Plastic
Material
Polyethylene
Series
TWB
Size
3 Inch
Size
3 IN
Size
3 Inch Trade Size
Special Features
May be used for single or multiple voice, video, or data cables. Complies with NEC Article 300-15(c).
Temperature Rating
90?°C
Trade Size
3 in
Type
Bushing
Package Weight (Imperial)
0.072 L
Package Weight (Metric)
0.033 kg
Bushing, Insulating, Polyethylene, Trade Size 1 Inch

TWB-53

Bushing, Insulating, Polyethylene, Trade Size 1 Inch
Bushing, Insulating, Polyethylene, Trade Size 2 Inch

TWB-56

Bushing, Insulating, Polyethylene, Trade Size 2 Inch
Bushing, Insulating, Polyethylene, Trade Size 2 1/2 Inch

TWB-57

Bushing, Insulating, Polyethylene, Trade Size 2 1/2 Inch
Bushing, Insulating, Polyethylene, Trade Size 4 Inch

TWB-60

Bushing, Insulating, Polyethylene, Trade Size 4 Inch
Bushing, Plastic - 105 Degrees C, Size 3 Inch

328

Bushing, Plastic - 105 Degrees C, Size 3 Inch

Frequently Asked Questions

What is the trade size of the TWB-58 bushing?

The trade size of the TWB-58 bushing is 3 inches.

What is the material of the TWB-58 bushing?

The TWB-58 bushing is made of plastic, specifically polyethylene.

What is the purpose of the TWB-58 bushing?

The TWB-58 bushing is used to protect nonmetallic low voltage cabling from sharp edges when installed in EMT.

How many units are in a standard package?

The standard package quantity for the TWB-58 is 25 units.

Can the TWB-58 bushing be used for multiple cables?

Yes, the TWB-58 bushing may be used for single or multiple voice, video, or data cables.

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.