COL400-12 Partex copper tube ring terminal, 400mm², M12 stud, pack 5

Why Choose the Partex COL400-12 400mm² Copper Tube Ring Terminal?

The Partex COL400-12 is a heavy-duty 400 mm² copper tube ring terminal designed to provide secure electrical connections between large copper conductors and equipment fitted with M12 stud terminals. Featuring a robust tubular crimp barrel and a flat ring-shaped mounting palm, this industrial cable lug is suitable for heavy-duty power distribution, electrical switchgear, busbar assemblies and large power cable termination applications.

As part of the Partex COL copper tube terminal range, the COL400-12 combines conductive copper construction with a straight terminal configuration to support efficient electrical current transfer and dependable mechanical connections. Its heavy-duty tubular barrel is designed for permanent compression crimp termination using suitable tooling, while the closed ring-shaped mounting palm provides secure attachment to compatible bolted electrical connections.

Designed for 400 mm² copper cables and an M12 mounting stud, the COL400-12 provides a practical termination solution for industrial power distribution equipment, switchgear assemblies, heavy-duty electrical machinery and large-conductor installations. Its straight configuration supports conventional cable routing to compatible equipment terminals. Supplied in a convenient pack of 5 terminals, it is suitable for electrical contractors, panel builders, power distribution engineers and industrial maintenance professionals.

Key Advantages

• Heavy-duty 400 mm² copper tube ring terminal for professional large-conductor electrical termination.
• M12 stud connection enables secure attachment to compatible bolted electrical terminals.
• Conductive copper construction supports efficient electrical current transfer.
• Robust tubular crimp barrel provides dependable mechanical retention when correctly installed.
• Closed ring-shaped mounting palm remains captured around the fixing until the nut or bolt is removed.
• Straight terminal configuration supports conventional cable routing and installation.
• Suitable for large copper power cables used in industrial electrical distribution systems.
• Designed for permanent electrical connections using appropriate compression crimping equipment.
• Uninsulated construction allows installers to apply insulation appropriate to the installation.
• Supplied in a pack of 5 for professional electrical installation, cable termination and maintenance work.

Key Features

• Partex COL400-12 copper tube ring terminal.
• 400 mm² nominal conductor cross-sectional area.
• M12 stud fixing for compatible bolted electrical connections.
• Conductive copper tube construction.
• Flat ring-shaped mounting palm with stud fixing hole.
• Heavy-duty tubular barrel for compression crimp termination.
• Straight cable lug configuration.
• Designed for permanent electrical cable connections using appropriate crimping tooling.
• Suitable for compatible copper conductors.
• Uninsulated construction for application-specific insulation requirements.
• Suitable for industrial power distribution, switchgear and heavy-duty electrical equipment.
• Secure ring-style mounting arrangement for compatible M12 bolted terminals.
• Pack quantity: 5 terminals.

Reliable Heavy-Duty Copper Cable Terminations for Industrial Power Distribution

Copper tube ring terminals such as the Partex COL400-12 provide a practical method of connecting large copper conductors to bolted terminals, busbars and industrial power equipment. The tubular barrel accepts a correctly prepared conductor, which is secured using an appropriately sized compression crimping tool and die. When properly installed, the crimped joint provides dependable electrical contact and mechanical retention.

The M12 ring-shaped mounting palm allows the terminated cable to be fastened to compatible studs or bolted electrical connection points. Unlike open-ended fork terminals, a closed ring terminal remains captured around the fixing until the nut or bolt is removed, making it useful where connection security and mechanical stability are important. The mounting arrangement must be suitable for the size and weight of the connected conductor.

The COL400-12 is designed for 400 mm² copper conductors used in heavy-duty industrial power distribution and electrical equipment. Its copper construction supports efficient electrical conductivity, while the straight terminal configuration provides a conventional connection arrangement for compatible equipment. Because 400 mm² conductors require substantial installation space, installers must consider the cable bending radius, terminal palm dimensions, available clearance and mechanical support.

For correct installation, the terminal should be crimped using tooling and dies appropriate for the terminal and conductor construction. The bolted connection should be tightened to the equipment manufacturer's specified torque. As the COL400-12 is uninsulated, appropriately rated heat-shrink sleeving, insulating boots or protective barriers should be applied where required. The completed termination must be suitable for the circuit current, operating voltage, conductor construction, mechanical loading and environmental conditions. The M12 stud size alone does not establish the current-carrying capacity of a 400 mm² cable connection; the complete bolted joint and equipment terminal must be verified as suitable for the intended application.

Typical Applications

• Heavy-duty industrial power distribution systems.
• Electrical switchgear and power distribution assemblies.
• Busbar connections and compatible M12 bolted power terminals.
• Large copper power cable terminations.
• Industrial electrical distribution equipment.
• Heavy-duty machinery and associated electrical power connections.
• OEM electrical equipment manufacturing and panel building.
• Commercial and industrial electrical infrastructure projects.
• Electrical maintenance, cable replacement and equipment refurbishment.
• Electrical systems requiring secure 400 mm² copper cable connections to appropriately rated M12 studs.