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Overview
- Dual-Side Wire Entry: Form secure connections between 2 conductors quickly using the double-sided entry ports sized for wires between 600 MCM and 6 AWG
- Ergonomic Design: Rounded corners and a smooth exterior finish over the plastisol insulation make Polaris connectors comfortable to grip
- Removable Plugs: Each port and adjustable set screw is covered by a secure plug to prevent debris, moisture or contaminants from entering the insulated connector
- Pre-filled Oxide Inhibitor: Both dual-side entry ports come pre-filled with an oxide inhibitor gel to prevent corrosion and provide low-contact resistance
- Professional Performance: The durable layer of insulation on each Polaris connector is UV, abrasion and chemical-resistant for reliable performance
Specifications
AL Wire Size | 600 MCM - 6 AWG |
Aluminum Conductor Max AMP | 385 Amp |
Aluminum Conductor Note | Dual Rated for use with copper and or aluminum cables. Not for use with fine-stranded, flexible cables |
Copper Conductor Max | 475 Amp |
CU Wire Size | 600 MCM - 6 AWG |
Warranty | 1 Year |
Wire/Cable Class | Class B, Class C |
Package Dimensions (L x W x H) | 8.25 IN x 5.55 IN x 3.6 IN |
Package Weight (Imperial) | 1.060 L |
Package Weight (Metric) | 0.481 kg |

ISR-1/0
The Polaris ISR-1/0 Multi-Tap In-Line Entry Connector features 2 ports sized for 1/0 - 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.
ISR-250
The Polaris ISR-250 Multi-Tap In-Line Entry Connector features 2 ports sized for 250 MCM - 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. 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.
IT-4
The Polaris IT-4 Multi-Tap Single-Side Entry Connector features 2 ports sized for 4 AWG to 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. 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.
IPL250-3B
The Polaris IPL250-3B Multi-Tap Single Side Entry Connector features 3 ports sized for 250 MCM - 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. 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.
ISPB350-3
The Polaris ISPB350-3 Multi-Tap Direct Burial Single-Sided Entry Connector features 3 ports sized for 350 MCM - 12 AWG wires. The body is made from aluminum alloy wrapped in a layer of high-dielectric strength rubber insulation. Each single-sided port is pre-loaded with an oxide inhibitor, with removable access plugs over the hex screws used to tighten the radial-tipped set screws. Rated for temporary submersion, wet or damp locations and direct burial applications. Installs with a hex key and torque wrench, without any tape or additional supplies. Meets or exceeds ANSI C119.1 specifications for use in wet or damp locations and is designed for use in a wide range of temporary submersed or burial splicing applications.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.