NSi Industries 300T-2 - 2 Port Stacked Lug 300 MCM - 6 AWG Stacked Lugs are large size set screw connectors with wire holes stacked on top of each other to minimize the width of the connector. Made of 6061T-6 aluminum alloy. Tin plated for low contact resistance. Suitable for use with both copper and aluminum conductors. Rated 600 volts (2000V max. per UL486B). UL486A/B Listed. Temperature rating 90 degrees C. Mounting hole spacing is NEMA standard of 1.75".
NSI Industries

300T-2

UPC: 662381001801

Documents & Media
Technical Bulletin

Contact for Pricing

Overview

The NSI Industries 300T-2 2-Port Stacked Lug is a high-capacity, set-screw connector engineered for efficient wire management in industrial and electrical applications. This dual-rated lug accommodates both copper and aluminum conductors ranging from 300 MCM to 6 AWG, making it ideal for high-current installations where space optimization is critical. Constructed from durable 6061T-6 aluminum alloy and electro-tin plated for superior conductivity, the 300T-2 ensures low contact resistance and long-term reliability. Its stacked wire hole design minimizes connector width while maximizing conductor density, reducing panel clutter and simplifying wiring layouts. The connector is UL486A/B listed with a 600V rating (2000V max per UL486B) and operates reliably at 90°C, meeting NEMA mounting hole spacing standards of 1.75 inches for compatibility with standard panel designs. With a maximum torque value of 30 in-lbs and a hex wrench size of 5/16 inches, installation is straightforward using common tools. NSI’s 300T-2 is a versatile solution for transformer terminations, panelboard connections, and heavy-duty industrial wiring where secure, reusable, and code-compliant connections are required.
  • Dual-rated for copper and aluminum conductors (300 MCM–6 AWG)
  • UL486A/B listed with 600V rating (2000V max per UL486B) and 90°C temperature rating
  • Stacked wire hole design minimizes connector width for compact installations
  • 6061T-6 aluminum alloy with electro-tin plating for low contact resistance
  • NEMA standard 1.75" mounting hole spacing for panel compatibility

Specifications

Connection Type
Set Screw
Material
6061T-6 Aluminum Alloy
Mounting Type
Stacked Lugs
Nema Rating
NEMA standard 1.75"
Poles
2 Port
Series
300T
Size
300 MCM - 6 AWG
Voltage Rating
600 V
Warranty
1 Year
Package Dimensions (L x W x H)
3 IN x 1 IN x 2 IN
Package Dimensions (L x W x H)
7.62 cm x 25.4 mm x 5.08 cm
Package Weight (Imperial)
2.400 L
Package Weight (Metric)
1.089 kg

Similar Products

300T

300TP

Voltage Rating: 600V (2000V max)

3000-BPT

Special Features: Concrete-tight

Standard: UL

Trade Size: 0.5 in

3000-BULK

Voltage Rating: 120 V

Poles: SPST

Mounting Type: Flush Mounting

3000-RT

Standard: UL 514B

Trade Size: 0.5 in

Finish: Zinc Plated

3001-RT

Finish: Zinc Plated

Material: Steel

Standard: UL 514B

You May Also Be Interested In

2 Port Stacked Lug 800 - 300 MCM Stacked Lugs are large size set screw connectors with wire holes stacked on top of each other to minimize the width of the connector. Made of 6061T-6 aluminum alloy. Tin plated for low contact resistance. Suitable for use with both copper and aluminum conductors. Rated 600 volts (2000V max. per UL486B). UL486A/B Listed. Temperature rating 90 degrees C. Mounting hole spacing is NEMA standard of 1.75".

800T-2

2 Port Stacked Lug 600 MCM - 2 AWG Stacked Lugs are large size set screw connectors with wire holes stacked on top of each other to minimize the width of the connector. Made of 6061T-6 aluminum alloy. Tin plated for low contact resistance. Suitable for use with both copper and aluminum conductors. Rated 600 volts (2000V max. per UL486B). UL486A/B Listed. Temperature rating 90 degrees C. Mounting hole spacing is NEMA standard of 1.75".

600T-2

3 Port Stacked Lug 600 MCM - 2 AWG Stacked Lugs are large size set screw connectors with wire holes stacked on top of each other to minimize the width of the connector. Made of 6061T-6 aluminum alloy. Tin plated for low contact resistance. Suitable for use with both copper and aluminum conductors. Rated 600 volts (2000V max. per UL486B). UL486A/B Listed. Temperature rating 90 degrees C. Mounting hole spacing is NEMA standard of 1.75".

600T-3

2 Port Stacked Lug 350 MCM - 6 AWG Stacked Lugs are large size set screw connectors with wire holes stacked on top of each other to minimize the width of the connector. Made of 6061T-6 aluminum alloy. Tin plated for low contact resistance. Suitable for use with both copper and aluminum conductors. Rated 600 volts (2000V max. per UL486B). UL486A/B Listed. Temperature rating 90 degrees C. Mounting hole spacing is NEMA standard of 1.75".

350T-2

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.