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NSI Industries IT-350C - The Polaris IT-350C Multi-Tap Dual-Side Entry Vision Tap Connector features 2 ports sized for 350 MCM to 6 AWG wires. The clear body allows users to see their conductor placement and is 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-350C

UPC: 662381996527

Documents & Media
Specification Sheet

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Overview

The NSI Polaris IT-350C Multi-Tap Dual-Side Entry Vision Tap Connector is a pre-insulated, 2-port connector engineered for secure, high-quality splices in industrial and commercial wiring applications. Designed for conductors ranging from 350 MCM to 6 AWG, this connector supports both copper and aluminum cables, making it a versatile choice for diverse installations. The transparent polycarbonate body allows visual confirmation of conductor placement, ensuring proper alignment and reducing the risk of installation errors. Each port is pre-loaded with an oxide inhibitor to prevent corrosion and maintain low contact resistance over time, critical for long-term reliability in demanding environments. The IT-350C features a dual-side entry design with removable port plugs, enabling flexible installation in cable trays, panel boards, ducts, raceways, or troughs. The ergonomic molding provides a comfortable grip during torque application, while the heavy-duty 6061-T6 aluminum alloy construction resists abrasion and chemical exposure. Installation requires only a hex key and torque wrench—no additional tape or supplies are needed, streamlining the process and reducing labor time. The connector is rated for 600V maximum voltage and operates reliably in temperatures from -45°C to 90°C (-49°F to 194°F), making it suitable for both indoor and outdoor use in dry locations. The clear body design simplifies inspection and troubleshooting, while the pre-insulated construction eliminates the need for additional protective measures. Ideal for splicing applications where speed, reliability, and visibility are priorities, the IT-350C is part of NSI Industries' Vision Tap line, a trusted solution for professionals requiring durable, high-performance connectors.
  • 2-port dual-side entry design for flexible installation in cable trays, ducts, or raceways
  • Supports 350 MCM to 6 AWG copper and aluminum conductors
  • Clear polycarbonate body for visual conductor placement verification
  • Pre-loaded oxide inhibitor prevents corrosion and ensures low contact resistance
  • Rated for 600V, -45°C to 90°C operation, and parallel configurations up to max amp ratings

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
Clear
Connection Type
Screw Terminal
Copper Conductor Max
350 Amp
Current Rating
310 A (Copper), 250 A (Aluminum)
Enclosure
Clear Plastisol
Environmental Conditions
Dry Location Only
Finish
Plastisol Insulated
Housing Material
Aluminum
Housing Material
Aluminium
Material
Plastisol, Oxide Inhibitor
Material
Aluminum
Mounting Type
Cable Trays, Panel Boards, Ducts, Raceways, Troughs
Number Of Conductors
2
Number Of Poles
1
Poles
2
Series
Polaris IT Series
Size
L=2.470 - W=2.500 - H=2.440 IN
Size
350 MCM to 6 AWG
Special Features
(2) 350 MCM-6 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
Double Sided Entry
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)
0.390 L
Package Weight (Metric)
0.177 kg
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The Polaris ISR-350C Multi-Tap Multi-Tap In-Line Entry Connector features 2 ports sized for 350 MCM - 6 AWG wires. The clear body allows users to see their conductor placement and is wrapped in a layer of plastisol insulation. Each in-line 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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The Telcom Splicing Connectors utilize an insulation displacement contact design for fast, simple, reliable terminations. No wire stripping is required and connectors will accept wire of different gauges. All connectors are Gel filled to provide moisture resistance and inhibit corrosion. For use with solid copper conductors only. Typical uses include Butt Splicing 2 or 3 wires of the same or different gauges. Perfect for pigtail and load coil splice applications. Use the UB connector for tapping onto an existing conductor with no service interruption. This eliminates cutting of cable pairs or opening cable pairs., 899740000841

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The Telcom Splicing Connectors utilize an insulation displacement contact design for fast, simple, reliable terminations. No wire stripping is required and connectors will accept wire of different gauges. All connectors are Gel filled to provide moisture resistance and inhibit corrosion. For use with solid copper conductors only. Typical uses include Butt Splicing 2 or 3 wires of the same or different gauges. Perfect for pigtail and load coil splice applications. Use the UB connector for tapping onto an existing conductor with no service interruption. This eliminates cutting of cable pairs or opening cable pairs., 899740000841
The Telcom Splicing Connectors utilize an insulation displacement contact design for fast, simple, reliable terminations. No wire stripping is required and connectors will accept wire of different gauges. All connectors are Gel filled to provide moisture resistance and inhibit corrosion. For use with solid copper conductors only. Typical uses include Butt Splicing 2 or 3 wires of the same or different gauges. Perfect for pigtail and load coil splice applications. Use the UB connector for tapping onto an existing conductor with no service interruption. This eliminates cutting of cable pairs or opening cable pairs., 849160000334

18121

The Telcom Splicing Connectors utilize an insulation displacement contact design for fast, simple, reliable terminations. No wire stripping is required and connectors will accept wire of different gauges. All connectors are Gel filled to provide moisture resistance and inhibit corrosion. For use with solid copper conductors only. Typical uses include Butt Splicing 2 or 3 wires of the same or different gauges. Perfect for pigtail and load coil splice applications. Use the UB connector for tapping onto an existing conductor with no service interruption. This eliminates cutting of cable pairs or opening cable pairs., 849160000334
The Telcom Splicing Connectors utilize an insulation displacement contact design for fast, simple, reliable terminations. No wire stripping is required and connectors will accept wire of different gauges. All connectors are Gel filled to provide moisture resistance and inhibit corrosion. For use with solid copper conductors only. Typical uses include Butt Splicing 2 or 3 wires of the same or different gauges. Perfect for pigtail and load coil splice applications. Use the UB connector for tapping onto an existing conductor with no service interruption. This eliminates cutting of cable pairs or opening cable pairs., 849160005087

18130

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Frequently Asked Questions

Are the drawing dimensions in inches?

Yes. The document states that all dimensions are in inches.

What product family does IT-350C belong to?

IT-350C is part of the IT Series pre-insulated connectors product family.

What type of product is IT-350C?

The document identifies IT-350C as a pre-insulated connector.

Where can I get product information?

Product information is available at www.nsiindustries.com.

How do I order NSI products?

To order NSI products, call (704) 439-2420 in the United States.

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