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NSI Industries CP3/0 - The Polaris CP3/0 Cable Entry Plug is a replacement part that takes the place of the secure removable plugs present in many Polaris pre-insulated connectors. This plug fits ports sized for 3/0 AWG wires. Protect the interior of your Polaris pre-insulated connectors, each port of which is pre-loaded with an oxide inhibitor to ensure a low-contact resistance connection. Polaris designs connectors for use in a wide range of splicing applications, including installation in cable trays, panel boards, ducts, raceways or troughs.

NSI Industries CP3/0 The Polaris CP3/0 Cable Entry Plug is a replacement part that takes the place of the…

UPC: 662381952158


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Technical Bulletin

Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Polaris CP3/0 Replacement Entry Port Plug (SKU: CP3/0) is a precision-engineered solution for maintaining the integrity of Polaris pre-insulated connectors in industrial and commercial wiring applications. Designed to fit entry ports sized for 3/0 AWG wires, this plug replaces missing or damaged entry points, preventing debris, moisture, and corrosion from compromising electrical connections. Each plug is pre-loaded with an oxide inhibitor to ensure low-contact resistance, critical for reliable performance in high-current applications. Constructed from 6061-T6 aluminum alloy, the CP3/0 features a high-dielectric strength plastisol insulation that resists abrasion, chemicals, and UV exposure. The ergonomic design includes a molded grip for easy handling, while the internal 1/4" hex pressure screw ensures secure fastening with standard tools. The plug is dual-rated for 90°C copper and aluminum conductors and operates reliably in temperatures as low as -45°C, making it suitable for harsh environments. Polaris pre-insulated connectors, including the CP3/0, are UL-listed per UL486A/B specifications for 600V applications. Their all-in-one design eliminates the need for additional covers or taping, streamlining installation and reducing labor costs. Compatible with cable trays, panel boards, ducts, raceways, and troughs, these connectors are ideal for splicing applications requiring secure, long-lasting connections. The CP3/0 is part of Polaris' IPLD3/0C series, available in multiple port configurations to match project requirements.
  • Secure Fit: This entry plug fits any Polaris pre-insulated connector port sized for 3/0 AWG wires, ensuring a sealed environment for a secure connection
  • Replacement Plug: Replaces the secure plug that covers each entry port to prevent debris, moisture or contaminants from entering the connector
  • Pre-filled Oxide Inhibitor: All entry ports come pre-filled with an oxide inhibitor gel to prevent corrosion and provide low-contact resistance
  • Professional Performance: Seal connectors to lengthen their lifetime and to ensure the best connection possible in harsh environments
  • UL-listed per UL486A/B specifications for 600V applications

Specifications

Application
Wire Termination
Color
Black
Connection Type
Screw Terminal
Environmental Conditions
90 C
Family Color
Black
Material
Aluminum Alloy, Plastisol
Material
Vinyl
Material
Other;Vinyl
Series
Polaris
Size
3/0 AWG
Special Features
3/0 AWG Plug - Single Piece
Type
Cable Port Plug
Voltage Rating
600 V
Warranty
1 Year
Wire Size
3/0
Package Dimensions (L x W x H)
0.54 IN x 0.75 IN x 0.47 IN
Package Dimensions (L x W x H)
13.716 mm x 19.05 mm x 11.938 mm
Package Weight (Imperial)
0.006 L
Package Weight (Metric)
0.003 kg
The Polaris SP3/0 Set Screw Plug is a replacement part that take the place of the secure removable plugs present in many Polaris pre-insulated connectors. This plug fits connectors sized for 3/0 AWG wires, covering the set screws used to tighten their connections. Protect the interior of your Polaris pre-insulated connectors, each port of which is pre-loaded with an oxide inhibitor to ensure a low-contact resistance connection, by guarding the set screws from outside contaminants. Polaris designs connectors for use in a wide range of splicing applications, including installation in cable trays, panel boards, ducts, raceways or troughs.

SP3/0

The Polaris SP3/0 Set Screw Plug is a replacement part that take the place of the secure removable plugs present in many Polaris pre-insulated connectors. This plug fits connectors sized for 3/0 AWG wires, covering the set screws used to tighten their connections. Protect the interior of your Polaris pre-insulated connectors, each port of which is pre-loaded with an oxide inhibitor to ensure a low-contact resistance connection, by guarding the set screws from outside contaminants. Polaris designs connectors for use in a wide range of splicing applications, including installation in cable trays, panel boards, ducts, raceways or troughs.
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Frequently Asked Questions

What type of insulation does the CP3/0 plug use?

The CP3/0 plug features high-dielectric strength plastisol insulation that is abrasion, chemical, and UV resistant.

Can the CP3/0 plug be used in outdoor environments?

Yes, the CP3/0 plug's UV-resistant insulation and corrosion-resistant aluminum construction make it suitable for outdoor use.

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