NSI Industries STL750-6 - 6 Port Aluminum Dual Rated Transformer Connector 750 MCM - 250 MCM Transformer Connectors are made from 6061T-6 aluminum alloy. They are electro-tin plated for low contact resistance. Two NEMA 1/2" holes for easy attachment. Rated 600 volts.
NSI Industries

STL750-6

UPC: 662381097101

Documents & Media
Technical Bulletin

Contact for Pricing

Overview

The NSI Industries STL750-6 is a 6-port, dual-rated aluminum transformer connector designed for high-performance electrical connections in transformer applications. Constructed from 6061T-6 aluminum alloy, this connector delivers superior electrical and mechanical performance with a temperature rating of 90°C and a maximum voltage rating of 600V. The electro-tin plating ensures low contact resistance, enhancing conductivity and reducing heat buildup during operation. This connector supports conductor sizes ranging from 750 MCM down to 250 MCM, making it versatile for a wide range of transformer configurations. The STL750-6 features two NEMA 1/2" mounting holes for secure attachment, with a mounting hole spacing of 1.75 inches. The connector includes internal hex pressure screws for reliable wire retention and a maximum torque value of 550 in./lbs. The dimensions are 1.44" (H) x 2.00" (W) x 1.75" (L), optimized for compact installation in tight spaces. Ideal for use in secondary transformer connections, the STL750-6 is compatible with both copper and aluminum conductors, ensuring flexibility in diverse electrical systems. Its durable construction and compliance with ANSI C119.4 Class A standards make it a reliable choice for industrial, commercial, and utility applications where safety and performance are critical. The connector's reusable design and electro-tin plating extend its service life, reducing maintenance costs and downtime. NSI Industries, a trusted manufacturer of high-quality electrical connectors, backs the STL750-6 with robust engineering and rigorous testing. This product is part of the STL Series, known for its precision and reliability in transformer applications. Whether for new installations or retrofits, the STL750-6 provides a dependable solution for secure, high-current connections in demanding environments.
  • 6-port design for multi-conductor connections in transformer applications
  • Dual-rated for conductor sizes 750 MCM to 250 MCM
  • 6061T-6 aluminum alloy with electro-tin plating for low contact resistance
  • Rated 600V max with 90°C temperature rating
  • Two NEMA 1/2" mounting holes for secure attachment

Specifications

Application
Wire Termination
Bolt Size
1/2 IN
Color
Aluminum
Environmental Conditions
90 C
Finish
Aluminum
Material
Aluminium;Aluminum
Material
Aluminum
Mounting Hole Spacing
1.75 in
Mounting Hole Spacing
44.45 mm
Mounting Hole Spacing
1.750000000000000 in
Mounting Hole Spacing
44.450000000000000 mm
Number Of Conductors
6
Number of Conductors/Ports (Main/Primary)
6
Number Of Mounting Holes
2
Number of Poles
1
Number Of Ports
6
Special Features
(6) 750-250 MCM - Dual Rated - 3 Pack
Temperature Rating, Maximum
194.00000 F
Temperature Rating, Maximum
90 °C
Temperature Rating, Maximum
194 F
Temperature Rating, Maximum
90 C
Temperature Rating, Minimum
194.00000 F
Temperature Rating, Minimum
90 °C
Temperature Rating, Minimum
194 F
Temperature Rating, Minimum
90 C
Type
Transformer Lug
Voltage Rating
600 V
Warranty
1 Year
Package Dimensions (L x W x H)
11.42 IN x 1.44 IN x 2 IN
Package Dimensions (L x W x H)
29.0068 cm x 3.6576 cm x 5.08 cm
Package Weight (Imperial)
5.040 L
Package Weight (Metric)
2.286 kg

Similar Products

STL750-4

Number of Conductors/Ports (Main/Primary): 4

Number Of Conductors: 4

Number Of Ports: 4

STL750-8

Number Of Conductors: 8

Number Of Ports: 8

Special Features: (8) 750-250 MCM - Dual Rated - 3 Pack

STL250-6

STL350-6

STL250-4

Material: 6061T-6 Aluminum Alloy

Size: 250 MCM - 6 AWG

Nema Rating: NEMA 1/2"

STL250-8

Material: 6061T-6 Aluminum Alloy

Size: 250 MCM - 6 AWG

Nema Rating: NEMA 1/2"

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.