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NSI Industries IT-350B - The Polaris IT-350B Multi-Tap Dual-Side Entry Connector features 2 ports sized for 350 MCM to 6 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-350B

UPC: 662381953056

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Technical Bulletin

Contact for Pricing

Overview

The NSI Polaris IT-350B Multi-Tap Dual-Side Entry Connector is a pre-insulated, 2-port splicing solution engineered for secure, high-current connections between conductors sized from 350 MCM to 6 AWG. Designed for versatility, this connector supports both copper and aluminum cables, with a dual rating of 310A for copper and 250A for aluminum at 90°C operating temperature. The aluminum alloy body is coated with high-dielectric strength plastisol insulation, providing abrasion, chemical, and UV resistance while ensuring ergonomic handling. Each port is pre-loaded with oxide inhibitor and features removable access plugs to seal unused entry points, eliminating the need for additional taping or covers. Installation is simplified with hex-key and torque wrench compatibility, requiring no extra supplies beyond basic wire preparation. The IT-350B is rated for 600V and installs in cable trays, panel boards, ducts, raceways, or troughs without specialized tools. Available in multiple port configurations to match application demands, the IT-350B delivers a durable, low-maintenance solution for industrial and commercial splicing tasks.
  • 2 ports for 350 MCM to 6 AWG conductors (copper or aluminum)
  • Pre-loaded oxide inhibitor and removable access plugs for unused ports
  • Aluminum alloy body with plastisol insulation (90°C rated, 600V)
  • Dual current ratings: 310A (copper), 250A (aluminum)
  • Installs with hex key and torque wrench; no tape or covers required

Specifications

Aluminum Conductor Max AMP
280 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
350 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=2.470 - W=2.500 - H=2.440 IN
Special Features
(2) 350 MCM-6 AWG - Dual Rated - 1 Pcs Per Bag
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
350 MCM-6 AWG
Wire Type
Class B & C
Wire/Cable Class
Class B, Class C
Package Dimensions (L x W x H)
2.47 IN x 2.5 IN x 2.44 IN
Package Dimensions (L x W x H)
6.2738 cm x 6.35 cm x 6.1976 cm
Package Weight (Imperial)
0.434 L
Package Weight (Metric)
0.197 kg
The Polaris IPLMD350-6 Multi-Tap Mountable Dual-Sided Entry Connector features 6 ports sized for 350 MCM - 6 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.

IPLMD350-6

The Polaris IPLMD350-6 Multi-Tap Mountable Dual-Sided Entry Connector features 6 ports sized for 350 MCM - 6 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.
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Bi-Metal Pin Connectors with Insulating Cover, 600V, Aluminum Cable Size 8 AWG to Copper Pigtail Wire Size 10 AWG, Tin Plated, Die Code 24, Die Color Code Blue
Panduit DV18-250B-3K Female Disconnect

DV18-250B-3K

Panduit DV18-250B-3K Female Disconnect
Rectangular Power Connectors, Housing, Receptacle / Plug, Wire-to-Wire, 1 Position, Wire & Cable, UL 94V-2, Power, Panel Mount

53884-1

Rectangular Power Connectors, Housing, Receptacle / Plug, Wire-to-Wire, 1 Position, Wire & Cable, UL 94V-2, Power, Panel Mount
The Polaris IPLD3/0-3B Multi-Tap Dual-Sided Entry Connector features 3 ports sized for 3/0 - 6 AWG wires. 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, and comes packaged in a clear plastic bag with a mounting hole for hanging in retail displays. Designed for use in a wide range of splicing applications, including installation in cable trays, panel boards, ducts, raceways or troughs.

IPLD3/0-3B

The Polaris IPLD3/0-3B Multi-Tap Dual-Sided Entry Connector features 3 ports sized for 3/0 - 6 AWG wires. 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, and comes packaged in a clear plastic bag with a mounting hole for hanging in retail displays. Designed for use in a wide range of splicing applications, including installation in cable trays, panel boards, ducts, raceways or troughs.
The Polaris IPLMD750-3 Multi-Tap Mountable Dual-Sided Entry Connector features 3 ports sized for 750 - 250 MCM. 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.

IPLMD750-3

The Polaris IPLMD750-3 Multi-Tap Mountable Dual-Sided Entry Connector features 3 ports sized for 750 - 250 MCM. 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 IPLMD750-6 Multi-Tap Mountable Dual-Sided Entry Connector features 6 ports sized for 750 - 250 MCM. 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.

IPLMD750-6

The Polaris IPLMD750-6 Multi-Tap Mountable Dual-Sided Entry Connector features 6 ports sized for 750 - 250 MCM. 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 ITO-4B Multi-Tap Offset Dual-Side Entry Connector features 2 ports sized for 4 - 14 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.

ITO-4B

The Polaris ITO-4B Multi-Tap Offset Dual-Side Entry Connector features 2 ports sized for 4 - 14 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.

Frequently Asked Questions

What wire sizes does the IT-350B support?

The IT-350B supports conductors from 350 MCM to 6 AWG, suitable for both copper and aluminum cables.

Is the IT-350B rated for aluminum cables?

Yes, the IT-350B is dual-rated for both copper (310A) and aluminum (250A) cables at 90°C.

What is the maximum operating voltage for the IT-350B?

The IT-350B is rated for a maximum operating voltage of 600V.

Does the IT-350B require additional supplies for installation?

No, the IT-350B installs using only a hex key and torque wrench; no tape or covers are needed.

What materials are used in the IT-350B connector?

The IT-350B features an aluminum alloy body with a plastisol insulation coating for durability and insulation.

Can the IT-350B be used in cable trays?

Yes, the IT-350B is designed for installation in cable trays, panel boards, ducts, raceways, or troughs.

What is the operating temperature rating of the IT-350B?

The IT-350B has an operating temperature rating of 90 degrees Celsius.

Are the access plugs removable on the IT-350B?

Yes, the IT-350B includes removable access plugs to seal unused entry ports.

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