UBR43 Partex Ring Terminals, M4, pack 100

Why Choose the Partex UBR43 M4 Ring Terminal?

The Partex UBR43 is a high-quality uninsulated ring terminal (ring cable lug) designed to provide secure and reliable electrical connections between stranded copper conductors and compatible screw or stud terminals. Featuring an M4 stud connection, this crimp terminal is suitable for industrial control panels, electrical equipment, switchgear and machinery wiring applications where dependable conductor termination is essential.

As part of the Partex UBR uninsulated ring terminal range, the UBR43 combines a conductive metal construction with a closed-ring design to provide a stable mechanical and electrical connection. Its tin-plated copper construction helps maintain effective electrical conductivity and provides resistance to surface oxidation. The crimp barrel allows a correctly sized stranded conductor to be securely attached using an appropriate terminal crimping tool.

With its M4 ring connection and compact uninsulated design, the Partex UBR43 is ideal for electrical assemblies requiring secure screw-mounted cable terminations. The closed-ring configuration helps prevent accidental disconnection when the fixing is correctly tightened. Supplied in a convenient pack of 100, these terminals are a practical choice for electricians, control panel manufacturers and industrial maintenance engineers.

Key Advantages

• Reliable uninsulated ring terminal for professional electrical cable termination.
• M4 stud connection suitable for compatible threaded screws and terminal studs.
• Closed-ring design provides secure mechanical retention when correctly installed.
• Tin-plated copper construction supports effective electrical conductivity and corrosion resistance.
• Crimp termination provides a permanent connection between the conductor and terminal.
• Compact uninsulated design is suitable for electrical assemblies where separate insulation is provided as required.
• Suitable for industrial control panels, electrical distribution equipment and machinery wiring.
• Supplied in a practical pack of 100 ring terminals.

Key Features

• Partex UBR uninsulated ring terminal series.
• M4 ring terminal connection.
• Closed-ring contact for secure screw or stud mounting.
• Tin-plated copper terminal construction.
• Uninsulated crimp barrel for conductor termination.
• Suitable for compatible stranded copper conductors.
• Designed for installation using an appropriately sized crimping tool and die.
• Provides a defined contact surface for electrical terminal connections.
• Suitable for electrical installation, industrial equipment assembly and maintenance.
• 100 ring terminals per pack.

Secure Electrical Connections with Uninsulated Ring Terminals

Uninsulated ring terminals provide a dependable method of attaching electrical conductors to screw and stud connections. The Partex UBR43 features a closed-ring contact designed for use with a compatible M4 fixing. Unlike fork terminals, which can be removed by loosening the fixing, a closed-ring terminal remains captured around the screw or stud until the fixing is removed. This makes ring terminals particularly useful in industrial electrical assemblies where secure conductor retention is important.

For correct installation, the conductor should be stripped to the appropriate length and inserted fully into the terminal barrel before crimping with a suitable tool and die. The completed connection should be inspected for secure conductor retention and then mounted onto the appropriate terminal stud. The fixing must be tightened according to the equipment manufacturer's specifications. As the UBR43 is an uninsulated terminal, suitable electrical insulation or protective enclosure arrangements should be provided wherever required by the installation.

Typical Applications

• Industrial electrical control panel wiring and assembly.
• Electrical switchgear and distribution equipment.
• Motor control centres and industrial machinery wiring.
• PLC control cabinets and automation installations.
• Electrical equipment and component connections.
• M4 screw and stud-mounted terminal connections.
• OEM electrical equipment manufacturing and assembly.
• Electrical maintenance, refurbishment and cable replacement.