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Black insulated multitap connector 4.47 in long with hex head

Polaris nsi

Polaris nsi ISR-350B Insulated Multitap Connector 4.47 In. L

SKU CH-VFZJ-11WP8

Insulated two-port splice accepts 6 AWG to 350 kcmil copper or aluminium at 600 V

  • Product typeIn-Line Splice
  • In-line splice design simplifies wire connections
  • Plastisol insulation protects conductors up to 194°F
  • Rated for 600 V maximum voltage
  • Accepts stranded copper from 6 AWG to 350 kcmil
  • cULus listed and UL 486A compliant

Polaris ISR-350B Insulated Multitap Connector

The Polaris ISR-350B is an insulated multitap connector designed for in-line splice applications in electrical and industrial wiring. It suits electricians and installers who need a reliable connection point for aluminium or copper conductors in residential, commercial or industrial projects. The connector body is aluminium with a black plastisol finish that provides insulation and environmental protection. It is supplied new and meets cULus and UL 486A standards.

Two-port design for 6 AWG to 350 kcmil conductors

The defining specification is the two-port configuration that accepts stranded copper wire sizes from 6 AWG up to 350 kcmil, as well as aluminium conductors. A 5/16 in hex head style allows secure tightening with standard tools. The connector is rated for a maximum voltage of 600 V and a maximum operating temperature of 194 degrees F. RoHS compliance confirms restricted substance adherence for regulated environments.

In-line splice that fits into existing cable runs

This connector functions as an in-line splice, so it integrates directly into a cable run without requiring a junction box or additional mounting hardware. The plastisol insulation eliminates the need for separate taping or heat-shrink steps, reducing installation time. The compact 4.47 in length allows it to fit in tight spaces such as wireways, panels or underground enclosures. It frees up room that a traditional multi-connector block would occupy.

How it compares

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Price $35.99
Pricier than about 58% of the 1,610 comparable items (median $25.99).

Specifications

Product
Brand namePolaris
Product typeIn-Line Splice

Questions about this item

What does the 350 kcmil maximum stranded-copper size mean for a real installation?

It sets the largest solid or stranded copper conductor you can insert into either port; anything larger will not seat fully and the set-screw cannot make reliable contact.

How does the 600 V rating limit the circuits this connector can join?

The connector is listed for circuits up to 600 volts AC or DC; using it on higher-voltage systems would exceed its insulation and clearance design.

What physical clearance does the 4.47 in length require inside a box or trough?

You need at least 4.47 inches of straight run plus room for the 5/16 in hex wrench to tighten both set-screws without hitting adjacent walls or other conductors.

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