Thomas Betts 17220-BD Ring Terminal 3/0 Awg

Product Description

The THOMAS BETTS 17220-BD is a heavy-duty ring terminal designed for terminating 3/0 AWG conductors at a 3/8-inch stud. Ring terminals in this size range are used to create a secure, low-resistance bolted connection between large-gauge wire and bus bars, lugs, battery terminals, or equipment grounding points. Electricians and electrical contractors install this type of terminal in power distribution panels, industrial equipment, generator sets, and large battery bank applications where reliable mechanical and electrical contact is critical. The 17220-BD provides a permanent crimped connection when installed with the appropriate die set for 3/0 AWG conductors.

This terminal is suited for heavy-gauge wiring applications in commercial, industrial, and utility environments. Typical installation scenarios include main service entrance conductors, generator output connections, large motor leads, and grounding electrode conductors. It is appropriate for use where a bolted ring-style termination is required at a 3/8-inch stud size. Licensed electricians performing work governed by NEC requirements will find this terminal fits standard large-conductor termination practices.

Key Features

• Rated for 3/0 AWG wire size for heavy-gauge conductor terminations
• 3/8-inch stud hole fits standard bus bar and equipment terminal studs
• Crimped ring style provides a secure, permanent bolted connection
• Compact form factor suited for tight termination spaces in panels and enclosures

Compatibility

Designed as an OEM-style ring terminal for use with 3/0 AWG conductors terminated at 3/8-inch studs in heavy-gauge electrical wiring applications.

Installation Notes

Installation should be performed by a licensed electrician in accordance with applicable NEC requirements. De-energize and lock out the circuit before terminating conductors. Use a ratcheting crimp tool with the correct die set specified for 3/0 AWG terminals to ensure a full, secure crimp. Do not use open-barrel or incorrect-size dies, as an improper crimp can result in a high-resistance joint or conductor pullout.