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Black plastisol-insulated aluminum inline splice connector 4.62 in long

Polaris nsi

Polaris nsi ISR-500B Insulated Multitap Connector 4.62 In

SKU CH-NR4B-G4G15

An insulated two-port in-line splice for aluminium or copper conductors up to 500 kcmil, rated 600 V and 194 °F, 4.62 in long, cULus listed to UL 486A

  • TypeIn-Line Splice
  • In-line splice design simplifies two-wire connections
  • Plastisol insulation protects against moisture and abrasion
  • Rated for 600 V and 194 °F continuous use
  • Accepts 4 AWG to 500 kcmil stranded copper or aluminum
  • cULus listed and RoHS compliant for code compliance

Polaris ISR-500B In-Line Splice Connector

This Polaris nsi ISR-500B is an insulated multitap connector designed for in-line splice applications. It accepts stranded copper or aluminium conductors ranging from 4 AWG up to 500 kcmil across two ports. The body is aluminium with a black plastisol finish that provides the insulation. Electrical professionals use it for power distribution splices rated at 600 V.

Thermals and Electrical Ratings

The connector carries a maximum operating temperature of 194 degrees F and a voltage rating of 600 V. It meets cULus standards and UL 486A, and it is RoHS compliant. The plastisol insulation does not carry a UL 94 flammability rating. No active cooling or power draw is involved because the component is a passive electrical splice.

Build Integration and Compatibility

Each port uses a hex-head set screw with a 5/16 in hex size for conductor termination. The overall length is 4.62 in, so the installer must allow that clearance in the enclosure or raceway. The connector suits aluminium and copper stranded wire only; solid conductors or sizes outside the 4 AWG to 500 kcmil range are not supported.

Highlights

  • In-line splice design simplifies two-wire connections
  • Plastisol insulation protects against moisture and abrasion
  • Rated for 600 V and 194 °F continuous use
  • Accepts 4 AWG to 500 kcmil stranded copper or aluminum
  • cULus listed and RoHS compliant for code compliance

Specifications

BrandPolaris
TypeIn-Line Splice

Questions about this item

How do I install the Polaris ISR-500B insulated multitap connector and which step is commonly missed?

Strip each conductor to the correct length, insert fully into both ports, then tighten the hex-head set screws with a 5/16 in hex driver until firm; the step often missed is verifying full conductor insertion before torquing the screws.

What maintenance or replacement will the ISR-500B connector need over time?

Periodically inspect the Plastisol insulation for cracking or hardening, check the hex set screws for tightness, and look for corrosion on the aluminium body; replace the connector if insulation damage or conductor discolouration is found.

What is the first limit reached on the ISR-500B during sustained high-current use?

The 194 °F maximum operating temperature of the Plastisol insulation is typically the first limit encountered under continuous load at the 600 V rating.

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