Nsi Industries N-350 Copper Split Bolt Connector 350 Mcm

Product Description

The NSI INDUSTRIES N-350 is a copper split bolt connector rated for 350 MCM wire. It is a high-strength, solderless service connector machined from high-copper alloy, designed for use with copper and copperweld conductors. The split bolt design clamps two conductors together without solder, providing a reliable mechanical and electrical bond. This type of connector is a standard choice for licensed electricians performing service entrance, feeder, and branch circuit splices where a permanent, code-acceptable mechanical connection is required.

The N-350 is suited for residential and commercial electrical installations where large-gauge copper or copperweld conductors need to be joined. Typical applications include service entrance splices, utility tap connections, and feeder conductor joints. It accommodates two conductors at the maximum wire size rating of 350 MCM. Electricians working on high-ampacity circuits frequently specify split bolt connectors of this type for their ease of installation and long-term connection integrity.

Key Features

• Rated for 350 MCM copper and copperweld conductors
• Solderless design requires no heat or flux during installation
• Machined from high-copper alloy for conductivity and corrosion resistance
• Accepts two conductors at maximum wire size
• Mechanical clamping provides a secure, permanent connection

Compatibility

Designed as an OEM-style solderless connector for use with 350 MCM copper and copperweld wire in standard electrical service and feeder applications.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize and lock out the circuit before making any connections. Strip conductors to the appropriate length, seat both wires fully into the bolt channel, and tighten the nut securely with an appropriate wrench. Wrap completed connections with self-fusing or high-voltage-rated tape rated for the application voltage.

Technical Specifications

• Wire Size Rating: 350 MCM
• Conductor Compatibility: Copper and copperweld
• Material: High-copper alloy
• Connection Type: Solderless split bolt
• Number of Conductors: 2 maximum

Standard Information

• Brand: NSI INDUSTRIES
• Manufacturer Part Number: N-350