NSi C30 Long Barrel Tinned Cop...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$8.50
NSi C30 Long Barrel Tinned Copper Compression Splice

NSi C30 Long Barrel Tinned Copper Compression Splice

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Model: C30

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

$8.50
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NSi C30 Long Barrel Tinned Copper Compression Splice

The NSi C30 Long Barrel Tinned Copper Compression Splice is a high-conductivity copper compression connector engineered for splicing copper conductors, available across the family in sizes ranging from 3/0 AWG to 4/0 AWG. Produced from high conductivity copper tubing and tin-plated for corrosion resistance, the connector carries a 600V voltage rating and is Listed for use at voltages up to 35kV when installed per cable manufacturer voltage stress relief instructions, with 5kV as the maximum for all bare splices. Every size in this family is UL Listed to UL 486A and UL 467, cULus recognized, and marked with die index and color coding for fast field identification.

Key Features

  • Size Range: Available from 3/0 AWG to 4/0 AWG to match copper conductor splicing needs across commercial and utility applications.
  • Long Barrel Design: Long barrel construction provides extended contact area for a secure copper-to-copper compression splice.
  • Durable Construction: Produced from high conductivity copper tubing for reliable long-term electrical performance.
  • Corrosion-Resistant Finish: Tin-plated finish protects the connector against corrosion.
  • Serrated Crimp Indicators: Serrations indicate proper crimp locations for consistent, code-compliant installation.
  • Die Index & Color Coding: Marked with die index and color coded for easy identification and reference in the field.
  • Voltage Rating: Rated 600V, and suitable for use at voltages up to 35kV when properly installed to cable manufacturer voltage stress relief instructions; 5kV is the maximum voltage in all bare splices.
  • Temperature Rating: Rated 90C (194F) maximum operating temperature.
  • Wire/Cable Class: Suitable for Class B and Class C conductor construction.

Certifications & Compliance

  • UL 486A, UL 467
  • cULus
  • UL Listed (File # E155027)

Technical Specifications

  • Slotted Tang: No
  • Barrel Peep Hole: No
  • Temperature Rating: 90C, 9CU
  • Max Temperature: 90 C (194 F)
  • WARRANTY: 1 Year
  • Conductor Rating: 9CU
  • Voltage Rating: 600V
  • Product Finish: Tin Plated
  • Series: C
  • Wire/Cable Class: Class B, Class C
  • Country of Origin: IND
  • Warranty Length: 1 year

Typical Applications

  • Underground and Overhead Conductor Splicing
  • Commercial and Industrial Electrical Installations
  • Utility and Distribution Wiring
  • Panelboard and Switchgear Connections
  • Renovation and New Construction Wiring

Why NSi?

NSi builds the C30 Long Barrel Tinned Copper Compression Splice from high conductivity copper tubing with a corrosion-resistant tin-plated finish, backed by UL 486A and UL 467 listing and cULus recognition across the full 3/0 AWG to 4/0 AWG size range for reliable, code-compliant splicing on professional electrical projects.

Manufacturer Resources

Product Specs

Slotted Tang:
No
Barrel Peep Hole:
No
Temperature Rating:
90C, 9CU
Max Temperature:
90 C (194 F)
WARRANTY:
1 Year
Conductor Rating:
9CU
Voltage Rating:
600V
Conductor Type:
Copper
Product Material:
Tinned Copper
Product Finish:
Tin Plated
Certifications:
E155027
Series:
C
Wire/Cable Class:
Class B, Class C
Field Application:
Splice
Product Type:
Compression Splice
Country of Origin:
IND
Barrel Length Type:
Long
Department:
Electrical
Product Group:
Wire Connectors & Terminals
Warranty Length:
1 year
Max. Temperature:
194 degrees fahrenheit
Wire Size:
3/0 AWG - 4/0 AWG
Listing:
cULus
Standards:
UL 486A, UL 467
Product Subgroup:
Wire Connectors

NSi C30 – Frequently Asked Questions

1) What voltage can NSi long barrel copper splices be used at?
Up to 35kV when installed per the cable manufacturer's voltage stress relief instructions, with 5kV the maximum in any bare splice. The connector itself also carries a 600V rating for standard building wire work.
2) Will this splice work with compact or Class C stranded cable?
The C Series splice accepts Class B and Class C stranded copper. Match the AWG size (3/0 or 4/0) and use the die index marked on the barrel so the crimp is made with the correct tooling.
3) Is this NSi splice UL listed for underground and direct burial grounding work?
It is UL Listed to UL 486A and UL 467, cULus recognized, under UL File E155027. UL 467 is the grounding and bonding standard, which is why these are used on underground and overhead conductor splicing as well as panelboard and switchgear connections.
4) What is the temperature rating on the NSi C Series copper splice?
90 C (194 F) maximum operating temperature, which lines up with 90 C rated conductor insulation such as THHN or XHHW in dry locations.
5) Does this NSi splice have a peep hole to check conductor insertion?
No peep hole and no slotted tang on this one. It is a straight long barrel splice, so you verify insertion depth by marking the conductor against the barrel before crimping. The serrations on the barrel show where the crimps go.
6) Why choose a long barrel splice instead of a standard barrel?
The long barrel gives more contact length along the conductor, which allows additional crimps and a larger contact area for the copper-to-copper joint. That is the usual choice for utility and distribution splices and medium-voltage runs; a short barrel is used where space in the enclosure or pothead is tight.
7) Does the tin plating matter for outdoor or underground splices?
Yes. The copper barrel is tin plated for corrosion resistance, which is what makes it suitable for underground and overhead conductor splicing where moisture exposure is a factor. Bare copper connectors oxidize faster in those conditions.
How fast can I get the NSi C30 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 C30 come with a warranty?
Absolutely. The NSi C30 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 C30?
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 C30 from ZenSupply?
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