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NSI Industries IT-500 - The Polaris IT-500 Multi-Tap Dual-Side Entry Connector features 2 ports sized for 500 MCM to 4 AWG wires. The body is made from aluminum alloy wrapped in a layer of plastisol insulation. Each port is pre-loaded with an oxide inhibitor, with removable access plugs over the hex screws used to tighten the connections. Dual rated for use with copper or aluminum cables. Installs with a hex key and torque wrench, without any tape or additional supplies. Designed for use in a wide range of splicing applications, including installation in cable trays, panel boards, ducts, raceways or troughs.
NSI Industries

IT-500

UPC: 662381950093

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Technical Bulletin

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Overview

The NSI Polaris IT-500 Multi-Tap Dual-Side Entry Connector is a pre-insulated, 2-port splicing solution engineered for secure, high-performance connections between two conductors in industrial and commercial electrical systems. Designed for wire sizes ranging from 500 MCM to 4 AWG, this connector supports both copper and aluminum cables, making it a versatile choice for a variety of applications, including cable trays, panel boards, ducts, raceways, and troughs. The IT-500 features a durable aluminum alloy body wrapped in high-dielectric strength plastisol insulation, providing exceptional resistance to abrasion, chemicals, and UV rays while ensuring long-term reliability in demanding environments. Each port is pre-loaded with an oxide inhibitor to prevent corrosion and maintain low contact resistance, while removable access plugs allow for flexible entry from either side, enabling quick and efficient installation. The ergonomic design includes a molded grip for comfortable torque application, and the connector is rated for a maximum operating temperature of 90°C and 600V, with maximum amp ratings of 380A for copper and 310A for aluminum. Installation is simplified with the included hex screws and torque wrench requirements, eliminating the need for additional supplies like tape or covers. The IT-500 is part of NSI Industries' Polaris line of pre-insulated connectors, known for their reliability and ease of use in parallel and splicing applications.
  • Pre-insulated aluminum alloy body with high-dielectric strength plastisol insulation
  • Dual-side entry ports with removable access plugs for flexible installation
  • Dual rated for copper and aluminum cables (500 MCM to 4 AWG)
  • Rated 600V, 90°C operating temperature, max 380A (copper) / 310A (aluminum)
  • Pre-loaded oxide inhibitor prevents corrosion and ensures low contact resistance

Specifications

Aluminum Conductor Max AMP
350 Amp
Aluminum Conductor Note
Dual Rated for use with copper and or aluminum cables. Not for use with fine-stranded, flexible cables
Application
Wire Termination
Color
Black
Copper Conductor Max
430 Amp
Environmental Conditions
90 C
Finish
Plastisol Insulated
Housing Material
Aluminum
Housing Material
Aluminium
Material
Aluminum
Number Of Conductors
2
Number Of Poles
1
Size
L=2.810 - W=2.870 - H=2.940 IN
Special Features
(2) 500 MCM-4 AWG - Dual Rated
Standard
UL 486A/B
Temperature Rating
90 C
Temperature Rating, Maximum
194 F
Temperature Rating, Maximum
90 C
Temperature Rating, Minimum
194 F
Temperature Rating, Minimum
90 C
Type
Multi Cable
Voltage Rating
600 V
Warranty
1 Year
Wire Size
500 MCM-4 AWG
Wire Type
Class B & C
Wire/Cable Class
Class B, Class C
Package Dimensions (L x W x H)
2.81 IN x 2.87 IN x 2.94 IN
Package Dimensions (L x W x H)
7.1374 cm x 7.2898 cm x 7.4676 cm
Package Weight (Imperial)
0.530 L
Package Weight (Metric)
0.240 kg
The Polaris ISR-500 Multi-Tap In-Line Entry Connector features 2 ports sized for 500 MCM - 4 AWG wires. The body is made from aluminum alloy wrapped in a layer of plastisol insulation. Each port is pre-loaded with an oxide inhibitor, with removable access plugs over the hex screws used to tighten the connections. Installs with a hex key and torque wrench, without any tape or additional supplies. Designed for use in a wide range of splicing applications, including installation in cable trays, panel boards, ducts, raceways or troughs.

ISR-500

The Polaris ISR-500 Multi-Tap In-Line Entry Connector features 2 ports sized for 500 MCM - 4 AWG wires. The body is made from aluminum alloy wrapped in a layer of plastisol insulation. Each port is pre-loaded with an oxide inhibitor, with removable access plugs over the hex screws used to tighten the connections. Installs with a hex key and torque wrench, without any tape or additional supplies. Designed for use in a wide range of splicing applications, including installation in cable trays, panel boards, ducts, raceways or troughs.
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Panduit DV18-250B-3K Female Disconnect

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The Polaris IPLMD500-4 Multi-Tap Mountable Dual-Sided Entry Connector features 4 ports sized for 500 MCM - 4 AWG wires. Mounting holes on either side of the connector allow for direct mounting to troughs, panels or wireways with 1/4†bolts. The body is made from aluminum alloy wrapped in a layer of plastisol insulation. Each dual-sided port is pre-loaded with an oxide inhibitor, with removable access plugs over the hex screws used to tighten the connections. Installs with a hex key and torque wrench, without any tape or additional supplies. Designed for use in a wide range of splicing applications, including installation in cable trays, panel boards, ducts, raceways or troughs.

IPLMD500-4

The Polaris IPLMD500-4 Multi-Tap Mountable Dual-Sided Entry Connector features 4 ports sized for 500 MCM - 4 AWG wires. Mounting holes on either side of the connector allow for direct mounting to troughs, panels or wireways with 1/4†bolts. The body is made from aluminum alloy wrapped in a layer of plastisol insulation. Each dual-sided port is pre-loaded with an oxide inhibitor, with removable access plugs over the hex screws used to tighten the connections. Installs with a hex key and torque wrench, without any tape or additional supplies. Designed for use in a wide range of splicing applications, including installation in cable trays, panel boards, ducts, raceways or troughs.
The Polaris IPLDS500-6 Multi-Tap Dual-Sided Entry Connector features 6 ports sized for 500 MCM - 4 AWG wires. The body is made from aluminum alloy wrapped in a layer of plastisol insulation. One side features stacked ports, with double-sided ports on the bottom for greater flexibility. Each port is pre-loaded with an oxide inhibitor, with removable access plugs over the hex screws used to tighten the connections. Installs with a hex key and torque wrench, without any tape or additional supplies. Designed for use in a wide range of tight-fitting splicing applications, including installation in small wire ways or panels.

IPLDS500-6

The Polaris IPLDS500-6 Multi-Tap Dual-Sided Entry Connector features 6 ports sized for 500 MCM - 4 AWG wires. The body is made from aluminum alloy wrapped in a layer of plastisol insulation. One side features stacked ports, with double-sided ports on the bottom for greater flexibility. Each port is pre-loaded with an oxide inhibitor, with removable access plugs over the hex screws used to tighten the connections. Installs with a hex key and torque wrench, without any tape or additional supplies. Designed for use in a wide range of tight-fitting splicing applications, including installation in small wire ways or panels.
The Polaris IPLDS350-10 Multi-Tap Dual-Sided Entry Connector features 10 ports sized for 350 MCM - 6 AWG wires. The body is made from aluminum alloy wrapped in a layer of plastisol insulation. One side features stacked ports, with double-sided ports on the bottom for greater flexibility. Each port is pre-loaded with an oxide inhibitor, with removable access plugs over the hex screws used to tighten the connections. Installs with a hex key and torque wrench, without any tape or additional supplies. Designed for use in a wide range of tight-fitting splicing applications, including installation in small wire ways or panels.

IPLDS350-10

The Polaris IPLDS350-10 Multi-Tap Dual-Sided Entry Connector features 10 ports sized for 350 MCM - 6 AWG wires. The body is made from aluminum alloy wrapped in a layer of plastisol insulation. One side features stacked ports, with double-sided ports on the bottom for greater flexibility. Each port is pre-loaded with an oxide inhibitor, with removable access plugs over the hex screws used to tighten the connections. Installs with a hex key and torque wrench, without any tape or additional supplies. Designed for use in a wide range of tight-fitting splicing applications, including installation in small wire ways or panels.
The Polaris IPLMD250-8 Multi-Tap Mountable Dual-Sided Entry Connector features 8 ports sized for 250 MCM - 6 AWG wires. Mounting holes on either side of the connector allow for direct mounting to troughs, panels or wireways with 1/4 inch bolts. The body is made from aluminum alloy wrapped in a layer of plastisol insulation. Each dual-sided port is pre-loaded with an oxide inhibitor, with removable access plugs over the hex screws used to tighten the connections. Installs with a hex key and torque wrench, without any tape or additional supplies. Designed for use in a wide range of splicing applications, including installation in cable trays, panel boards, ducts, raceways or troughs.

IPLMD250-8

The Polaris IPLMD250-8 Multi-Tap Mountable Dual-Sided Entry Connector features 8 ports sized for 250 MCM - 6 AWG wires. Mounting holes on either side of the connector allow for direct mounting to troughs, panels or wireways with 1/4 inch bolts. The body is made from aluminum alloy wrapped in a layer of plastisol insulation. Each dual-sided port is pre-loaded with an oxide inhibitor, with removable access plugs over the hex screws used to tighten the connections. Installs with a hex key and torque wrench, without any tape or additional supplies. Designed for use in a wide range of splicing applications, including installation in cable trays, panel boards, ducts, raceways or troughs.

Frequently Asked Questions

What wire sizes are compatible with the IT-500?

The IT-500 supports wire sizes from 500 MCM to 4 AWG, including both copper and aluminum cables.

What is the maximum operating temperature of the IT-500?

The IT-500 is rated for a maximum operating temperature of 90°C.

What is the voltage rating of the IT-500 connector?

The IT-500 is rated for a maximum voltage of 600V.

What is the maximum amp rating for copper cables in the IT-500?

The maximum amp rating for copper cables in the IT-500 is 380A.

What is the maximum amp rating for aluminum cables in the IT-500?

The maximum amp rating for aluminum cables in the IT-500 is 310A.

Does the IT-500 require any special tools for installation?

Yes, installation requires a hex key and torque wrench to secure the hex screws to the specified torque values.

Is the IT-500 connector resistant to chemicals and UV rays?

Yes, the plastisol insulation is resistant to abrasion, chemicals, and UV rays, ensuring long-term durability.

Can the IT-500 be used for parallel conductor connections?

Yes, the IT-500 is UL-listed for parallel configurations and can be used for multiple conductor runs.

Is the IT-500 connector rated for outdoor use?

The IT-500 is designed for dry locations only and is not intended for outdoor exposure without additional protection.

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