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

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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
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 F
Temperature Rating, Maximum
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
8 Port Aluminum Dual Rated Transformer Connector 750 MCM - 250 MCM made from 6061T-6 aluminum alloy. It is electro-tin plated for low contact resistance. Two NEMA 1/2" holes for easy attachment. Rated 600 volts.

STL750-8

8 Port Aluminum Dual Rated Transformer Connector 750 MCM - 250 MCM made from 6061T-6 aluminum alloy. It is electro-tin plated for low contact resistance. Two NEMA 1/2" holes for easy attachment. Rated 600 volts.
4 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.

STL750-4

4 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.
8 Port Aluminum Dual Rated Transformer Connector 500 MCM - 4 AWG 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.

STL500-8

8 Port Aluminum Dual Rated Transformer Connector 500 MCM - 4 AWG 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.
Single Lug 4-14 AWG Al (2 EA)

4TR

Single Lug 4-14 AWG Al (2 EA)
1 Port Aluminum Lug 500 MCM - 4 AWG Aluminum Single Lugs are versatile and reuseable set screw connectors made of 6061T-6 aluminum alloy. Electro-tin plated for low contact resistance. Suitable for use with both copper and aluminum conductors. Temperature Rating 90 degrees C. Rated 600 volts (2000V max. per UL486B). UL 486A/B Listed. .

500T

1 Port Aluminum Lug 500 MCM - 4 AWG Aluminum Single Lugs are versatile and reuseable set screw connectors made of 6061T-6 aluminum alloy. Electro-tin plated for low contact resistance. Suitable for use with both copper and aluminum conductors. Temperature Rating 90 degrees C. Rated 600 volts (2000V max. per UL486B). UL 486A/B Listed. .
1 Port Aluminum Lug 350 MCM - 6 AWG Aluminum Single Lugs are versatile and reuseable set screw connectors made of 6061T-6 aluminum alloy. Electro-tin plated for low contact resistance. Suitable for use with both copper and aluminum conductors. Temperature Rating 90 degrees C. Rated 600 volts (2000V max. per UL486B). UL 486A/B Listed. .

350T

1 Port Aluminum Lug 350 MCM - 6 AWG Aluminum Single Lugs are versatile and reuseable set screw connectors made of 6061T-6 aluminum alloy. Electro-tin plated for low contact resistance. Suitable for use with both copper and aluminum conductors. Temperature Rating 90 degrees C. Rated 600 volts (2000V max. per UL486B). UL 486A/B Listed. .
Cast Bronze Terminal Lug 500 - 300 MCM 4 Port 2 Mounting Holes Copper Terminal Lugs are made of high copper alloy. They are used for joining a wide range of cables or terminal blocks.

TL500-4L2

Cast Bronze Terminal Lug 500 - 300 MCM 4 Port 2 Mounting Holes Copper Terminal Lugs are made of high copper alloy. They are used for joining a wide range of cables or terminal blocks.
6 Port 8 Mounting Hole Aluminum Dual Rated Transformer Lug 350 MCM - 6 AWG Aluminum Dual Rated Transformer Lugs are versatile and reuseable set screw connectors made of 6061T-6 aluminum alloy for superior electrical and mechanical performance. Two set screws per wire hole ensure an exceptional connection. Electro-tin plated for low resistance. For use with copper or aluminum conductors. Mounting hole spacing is NEMA 1-3/4". Meets or exceeds ANSI C119.4 Class A. Rated 600 Volts. Temperature Rating 90 degrees C.

6-350L8

6 Port 8 Mounting Hole Aluminum Dual Rated Transformer Lug 350 MCM - 6 AWG Aluminum Dual Rated Transformer Lugs are versatile and reuseable set screw connectors made of 6061T-6 aluminum alloy for superior electrical and mechanical performance. Two set screws per wire hole ensure an exceptional connection. Electro-tin plated for low resistance. For use with copper or aluminum conductors. Mounting hole spacing is NEMA 1-3/4". Meets or exceeds ANSI C119.4 Class A. Rated 600 Volts. Temperature Rating 90 degrees C.
4 Port Aluminum Dual Rated Transformer Connector 350 MCM - 6 AWG made from 6061T-6 aluminum alloy. It is electro-tin plated for low contact resistance. Two NEMA 1/2" holes for easy attachment. Rated 600 volts.

STL350-4

4 Port Aluminum Dual Rated Transformer Connector 350 MCM - 6 AWG made from 6061T-6 aluminum alloy. It is electro-tin plated for low contact resistance. Two NEMA 1/2" holes for easy attachment. Rated 600 volts.
4 Port Aluminum Dual Rated Transformer Connector 250 MCM - 6 AWG 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.

STL250-4

4 Port Aluminum Dual Rated Transformer Connector 250 MCM - 6 AWG 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.
4 Port Aluminum Dual Rated Transformer Connector 500 MCM - 4 AWG 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.

STL500-4

4 Port Aluminum Dual Rated Transformer Connector 500 MCM - 4 AWG 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.
8 Port Aluminum Dual Rated Transformer Connector 250 MCM - 6 AWG 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.

STL250-8

8 Port Aluminum Dual Rated Transformer Connector 250 MCM - 6 AWG 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.

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