NSi Industries Polaris Vision ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$38.03
NSi Industries Polaris Vision Tap™ Insulated In-Line Splice, ISR Series

NSi Industries Polaris Vision Tap™ Insulated In-Line Splice, ISR Series

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Model: ISR-1/0C

In Stock (leaves warehouse same day if ordered before 3pm ET)

$38.03
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NSi Industries Polaris Vision Tap™ Insulated In-Line Splice, ISR Series

The NSi Industries Polaris Vision Tap™ Insulated In-Line Splice (ISR Series) is a clear, insulated in-line splicer/reducer designed for reliable wire termination in the 1/0 - 14 AWG range. Built from durable Plastisol insulation and rated 600V at 90° C, this splice accommodates 2 conductors of Class B & C wire types for professional electrical connections. It is cULus listed and intended for dry locations only, making it a dependable choice for panelboard, service entrance, and branch-circuit tap applications.

Key Features

  • Wire Range: Accepts 1/0 - 14 AWG conductors for versatile splicing and reducing applications.
  • Durable Construction: Clear Plastisol material provides visible connection verification while insulating the splice.
  • In-Line Splicer / Reducer: Type designed for straightforward in-line wire termination without additional taping.
  • Conductor Capacity: Accommodates 2 conductors per splice for standard tap and termination needs.
  • Temperature Rating: Rated for continuous use at 90° C for demanding electrical environments.
  • Voltage Rating: 600V rating supports a wide range of branch-circuit and feeder applications.
  • Wire Type Compatibility: Suitable for Class B & C stranded wire types.
  • Environmental Conditions: Intended for dry locations only.

Certifications & Compliance

  • cULus Listed
  • Rated for Dry Locations Only

Technical Specifications

  • Color: Clear
  • Number Of Conductors: 2
  • Temperature Rating: 90° C
  • Voltage Rating: 600V
  • Application: Wire Termination
  • Environmental Conditions: Dry Locations Only
  • Material: Plastisol
  • Standard: cULus
  • Type: In-Line Splicer / Reducer
  • Wire Type: Class B & C

Typical Applications

  • Commercial and Industrial Electrical Wire Termination
  • Panelboard and Load Center Wiring
  • Service Entrance and Feeder Tap Connections
  • Branch-Circuit Splicing and Reducing
  • Indoor Dry-Location Electrical Installations

Why NSi Industries?

NSi Industries builds the Polaris Vision Tap™ ISR Series with clear Plastisol insulation, a 600V/90° C rating, and cULus listing to give electrical professionals a dependable, code-compliant in-line splice. The 1/0 - 14 AWG wire range and 2-conductor capacity make it a versatile choice for demanding termination work where reliability and visible connection verification matter.

Manufacturer Resources

Product Specs

Product Color:
Clear
Number Of Conductors:
2
Temperature Rating:
90° C
Voltage Rating:
600V
Application:
Wire Termination
Environmental Conditions:
Dry Locations Only
Product Material:
Plastisol
Standards:
cULus
Product Type:
In-Line Splicer / Reducer
Wire Type:
Class B & C
Department:
Electrical
Product Group:
Wiring Devices
Product Size:
1/0 AWG - 14 AWG
Listing:
cULus

NSi ISR-1/0C – Frequently Asked Questions

1) What wire sizes does the NSi Polaris Vision Tap ISR in-line splice cover?
Two wire ranges are offered in the ISR Series. The ISR-1/0C takes 1/0 AWG down to 14 AWG, and the ISR-250C takes 250 MCM down to 6 AWG. Pick by the largest conductor going in: if you are reducing a 250 MCM feeder to a smaller branch conductor, the ISR-250C is the one; for anything from 1/0 down, use the ISR-1/0C.
2) Can I use an ISR in-line splice in an outdoor pull box or a wet underground vault?
No. The Polaris Vision Tap ISR splice is rated for dry locations only, so it should not go in outdoor boxes, handholes, underground vaults, or anywhere subject to moisture. For those, you need a submersible-rated connector and appropriate sealing. Indoors, it is fine in panelboards, load centers, and branch-circuit work.
3) Is the NSi ISR splice rated for 480V three-phase feeder work?
Yes. The ISR insulated splice carries a 600V rating with a 90 degree C conductor temperature rating, which covers 120/208, 277/480, and typical feeder and service-entrance tap voltages in commercial buildings.
4) Can I use an in-line reducer to step a large feeder down to a smaller branch conductor?
That is exactly what the reducer function is for. The ISR takes two different conductor sizes, one per end, within its range, so you can land a 250 MCM feeder against a 6 AWG on the ISR-250C, or a 1/0 against a 14 AWG on the ISR-1/0C, in one insulated body instead of a splice block plus tape.
5) How many conductors go into one ISR splice?
Two. The ISR is a straight in-line splicer/reducer with one port per end, so it joins one conductor to one conductor. If you need to land three or more wires at a common point, an in-line body is the wrong shape of connector for the job.
6) Do I still have to tape or heat-shrink the connection after using one of these?
No taping needed. The ISR comes pre-insulated in Plastisol, so the splice is complete once the conductors are seated and the set screws are torqued. The body is clear, which is the point of the Vision Tap name: an inspector can see conductor insertion depth without cutting anything open.
7) Will the ISR splice accept compact stranded or Class B and C stranded copper?
The ISR is listed for Class B and C wire types, which is standard stranded building wire such as THHN/THWN-2 and XHHW. Combined with the 90 degree C rating, it suits the conductor types normally pulled in commercial panelboard and branch-circuit work.
How fast can I get the NSi ISR-1/0C delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the NSi ISR-1/0C come with a warranty?
Absolutely. The NSi ISR-1/0C is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the NSi ISR-1/0C?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the NSi ISR-1/0C from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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