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NSI Industries SP350 - The Polaris SP350 Set Screw Plug is a replacement part that takes the place of the secure removable plugs present in many Polaris pre-insulated connectors. This plug fits connectors sized for 350 MCM 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.

NSI Industries SP350 The Polaris SP350 Set Screw Plug is a replacement part that takes the place of the…

UPC: 662381789112

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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 NSI Industries SP350 Set Screw Plug is a direct replacement part designed to seal the set screw ports of Polaris pre-insulated connectors rated for 350 MCM wire. Each SP350 plug is engineered to protect set screws from contaminants such as debris, moisture, and corrosion, ensuring reliable electrical connections in demanding industrial environments. The SP350 is sold in a standard pack of 10 plugs, providing cost-effective protection for maintenance and installation crews working with Polaris IPL350 and IPLD350 series connectors. Key specifications include a 5/16" internal hex drive for secure installation and removal, matching the torque requirements of the set screws in Polaris connectors. The plug’s design integrates seamlessly with the connector’s oxide inhibitor system, which is pre-applied to maintain low-contact resistance and prevent oxidation over time. Constructed from durable materials, the SP350 is compatible with Polaris connectors handling wire ranges from 350 MCM to 12 AWG, supporting both copper and aluminum conductors rated up to 90°C. Applications for the SP350 include cable trays, panel boards, ducts, raceways, and troughs where Polaris pre-insulated connectors are deployed. The plug’s high-dielectric strength insulation resists abrasion, chemicals, and UV exposure, ensuring long-term performance in harsh conditions. Installation requires only a hex key, eliminating the need for additional sealing materials like tape or covers. The SP350 is a critical accessory for maintaining the integrity of Polaris connectors in high-voltage splicing applications, including those operating at 600V and in cold environments down to -45°C. For optimal results, use the SP350 in conjunction with Polaris IPL350 and IPLD350 series connectors, which are manufactured from 6061-T6 aluminum alloy and dual-rated for copper and aluminum conductors. The SP350 plugs are not interchangeable with other connector brands or wire sizes; always verify compatibility with the specific Polaris connector model and wire range before installation.
  • Secure Fit: This set screw plug fits any Polaris pre-insulated connector sized for 350 MCM wires, ensuring a sealed environment for a secure connection
  • Replacement Plug: Replaces the secure plug that covers each set screw 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
  • Sold in 10-pack for cost-effective maintenance and installation

Specifications

Application
Wire Termination
Color
Black
Connection Type
Set Screw
Environmental Conditions
90 C
Family Color
Black
Material
Aluminum alloy with plastisol insulation
Material
Vinyl
Material
Other;Vinyl
Series
Polaris
Size
350 MCM
Special Features
350 MCM Plug - Single Piece
Type
Screw Port Plug
Voltage Rating
600 V
Warranty
1 Year
Wire Size
350
Package Dimensions (L x W x H)
0.63 IN x 0.99 IN x 0.45 IN
Package Dimensions (L x W x H)
16.002 mm x 25.146 mm x 11.43 mm
Package Weight (Imperial)
0.010 L
Package Weight (Metric)
0.005 kg
The Polaris CP350 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 350 MCM 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.

CP350

The Polaris CP350 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 350 MCM 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.
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Frequently Asked Questions about NSI Industries

How are Tork products typically installed?

Tork products are typically installed by trained technicians who follow a comprehensive commissioning process. This includes verifying the work environment, conducting electrical installation checks, performing internal and external equipment inspections, powering on the system, and executing operational tests to ensure compatibility and reliability.

What environmental ratings do Tork products have?

Tork products are designed to meet various environmental ratings, including NEMA Type 4X and Type 6, which provide protection against corrosion, windblown dust, rain, and occasional temporary submersion. These ratings ensure that Tork products can withstand harsh industrial environments while maintaining operational integrity.

What communication protocols do Tork products support?

Tork products support a comprehensive range of communication protocols, including PROFIBUS DP V1, PROFINET with dual port, EtherNet/IP with dual port, CANopen, and Modbus RTU integrated as standard. These protocols facilitate flexible network integration and high-performance communication across various industrial automation systems.

What are the key features of Tork products?

Tork products are designed with advanced features that enhance efficiency and reliability in industrial applications. Key features include integrated harmonics and EMC design for improved power quality, removable terminals for quick installation, and USB ports for easy troubleshooting. Additionally, Tork solutions emphasize user-friendly setup with application wizards and memory modules for convenient parameter management.

What are the main product lines offered by Tork?

Tork offers a diverse range of products primarily focused on industrial automation, including TORK® Photocontrols, lighting controls, and various electrical components such as enclosures, occupancy sensors, and grounding solutions. These products are designed to enhance efficiency and reliability in commercial and industrial applications.

What technical support does Tork offer?

Tork offers a comprehensive range of technical support services, including 24/7 customer support, on-site service management, and a technical hotline network. With three advanced technical support centers and over 8,000 hours of technical training conducted annually, Tork ensures certified expertise across 25+ languages to assist customers effectively. Their commitment to service is reflected in a 98% Service Level Agreement compliance rate, providing reliable support for all operational needs.

What industries and applications are Tork products used for?

Tork products are utilized across a variety of industries, including food processing, healthcare, hospitality, and manufacturing. They are designed for applications such as hand hygiene, surface cleaning, and dispensing solutions, ensuring efficiency and compliance in environments that require high standards of cleanliness and safety.

What certifications and standards do Tork products comply with?

Tork products comply with UL and cUL certifications, ensuring they meet rigorous safety and performance standards. Additionally, many models are designed to meet NEMA enclosure ratings, providing protection against environmental factors.

How are Remke products typically installed?

Remke products are typically installed through a systematic process that includes site audits to verify proper wiring, followed by remote or on-site commissioning. This commissioning involves installation verification, programming, and communication testing to ensure the system operates reliably and meets design specifications.

What accessories are available for Remke products?

Remke offers a wide range of accessories for their products, including panel mounting kits, fuse holders for voltage inputs, ferrites for communication modules, and current transformers. These accessories enhance the functionality and protection of Remke's industrial automation solutions, ensuring reliable performance in various applications.