Why Choose the Partex COL4-4 Copper Tube Ring Terminal?
The Partex COL4-4 Copper Tube Ring Terminal is a professional electrical cable termination component designed for connecting compatible 4 mm² copper conductors to electrical equipment using an M4 stud or terminal connection. Manufactured from copper and supplied in a convenient pack of 100, this tubular ring terminal provides a practical solution for creating secure crimped cable terminations in electrical installations, industrial control panels, machinery and equipment wiring applications.
Reliable cable terminations are essential for maintaining electrical continuity and dependable circuit performance. The Partex 4 mm² M4 copper tube ring terminal combines a tubular conductor entry with a ring-shaped mounting end, allowing a suitably prepared cable to be crimped into the terminal before connection to a compatible M4 stud or fastening point.
Unlike open-ended fork terminals, a ring terminal surrounds the mounting stud, providing a connection arrangement that remains captured beneath the fastening hardware until the fastener is removed. This makes ring terminals particularly useful in electrical assemblies where a secure mechanical connection is required.
Supplied in a pack of 100 terminals, the Partex COL4-4 is suitable for electrical contractors, panel builders, industrial maintenance engineers and OEM equipment manufacturers who regularly work with 4 mm² conductors and M4 electrical connections. Its copper construction supports electrical conductivity, while the bulk pack quantity provides a convenient supply for repetitive cable termination tasks.
Key Advantages
- Designed for terminating compatible 4 mm² copper conductors.
- M4 ring connection for attachment to suitable electrical studs and terminals.
- Manufactured from copper for effective electrical conductivity.
- Tubular barrel design supports permanent crimped conductor termination.
- Ring-shaped mounting end provides a captured connection around the fastening stud.
- Suitable for professional electrical panel wiring and equipment assembly.
- Supports dependable electrical continuity when correctly selected, crimped and installed.
- Useful for machinery wiring, electrical distribution equipment and industrial control systems.
- Compatible with appropriately specified crimping tools and dies.
- Helps standardise conductor terminations across electrical manufacturing projects.
- Pack of 100 terminals supports high-volume electrical assembly and maintenance.
- Convenient for workshop storage, electrical contractors and maintenance departments.
- Suitable for applications requiring a crimped cable connection to an M4 fixing point.
Key Features
- Partex copper tube ring terminal.
- 4 mm² nominal conductor cross-sectional area.
- M4 stud size.
- Copper terminal construction.
- Closed-ring mounting configuration.
- Tubular cable entry for crimp termination.
- Designed for use with suitable copper electrical conductors.
- Suitable for appropriately matched crimping equipment.
- Practical for electrical control panel and machinery wiring.
- Designed for fixed electrical terminal connections.
- Manufacturer part number COL4-4.
- 100 ring terminals per pack.
Electrical equipment often requires conductors to be connected securely to studs, busbar connections, terminal posts and other fixed electrical connection points. Selecting a ring terminal that matches both the conductor size and the mounting stud is important for creating a dependable electrical termination. The Partex COL4-4 is designed for applications involving compatible 4 mm² copper conductors and M4 mounting studs.
The terminal's copper tube construction provides an electrically conductive connection between the cable and the ring mounting point. During installation, the prepared conductor is inserted into the tubular barrel and compressed using an appropriately matched crimping tool. The completed ring connection is then secured to the equipment's designated M4 connection point using suitable fastening hardware.
Copper is widely used in electrical termination components because of its excellent electrical conductivity. When correctly installed, a copper ring terminal provides a practical means of transferring current between the connected conductor and electrical equipment. However, the overall performance of the connection depends on conductor compatibility, crimp quality, contact surface condition and correct fastening.
The 4 mm² nominal conductor size makes the COL4-4 relevant to a range of electrical wiring applications where this conductor cross-sectional area is specified. Actual suitability should be confirmed against the manufacturer's approved conductor range and construction requirements, particularly where different conductor classes or strand configurations are involved.
The M4 ring opening is intended for use with compatible M4 studs or fastening arrangements. Correct stud sizing is essential: an oversized opening may not provide the intended positioning, while an undersized opening will prevent proper installation. The mounting hardware, electrical contact surfaces and tightening requirements must also be suitable for the completed connection.
Secure M4 Stud Connections with a Closed-Ring Design
The Partex COL4-4 copper ring terminal features a closed-ring connection arrangement. This design allows the terminal to fit around an appropriate M4 mounting stud and be retained beneath the securing hardware.
One of the main advantages of a ring terminal is that it cannot simply slide sideways away from the stud while the fastener remains in place. This makes the configuration useful for fixed electrical connections where secure mechanical retention is important.
Ring terminals are commonly selected for electrical equipment that requires reliable cable attachment to designated connection points. Examples include control panel terminal studs, suitable busbar connection points, machinery electrical assemblies and equipment terminal posts.
Correct fastening remains essential. The connection should be assembled using the appropriate hardware and tightened according to the equipment manufacturer's instructions. Excessive tightening can damage components, while insufficient tightening can result in poor contact and potential overheating.
The ring terminal should also be positioned so that the connected conductor is not subjected to excessive bending, pulling or mechanical strain. Suitable cable support and routing help protect the completed termination during normal equipment operation and maintenance.
Correct Crimping and Installation
For dependable results, the Partex COL4-4 4 mm² M4 ring terminal should be installed using a crimping tool and die approved for the terminal construction and conductor size. Selecting the correct tooling is important because the crimp must provide adequate mechanical retention and electrical contact without damaging the connector or conductor.
Before installation, the conductor should be prepared in accordance with the manufacturer's instructions. Insulation should be removed to the appropriate length, and care should be taken to avoid cutting or damaging individual copper strands.
The prepared conductor is then inserted into the tubular barrel of the ring terminal. The conductor must be correctly positioned before the crimp is formed using the specified tool and die arrangement.
Following crimping, the termination should be inspected according to the applicable installation procedure. The completed connection can then be attached to the compatible M4 stud or terminal using suitable fastening hardware and the specified tightening method.
Where the application requires additional electrical insulation, environmental sealing or mechanical protection, these measures should be provided as part of the complete installation.
Important: The supplied product description identifies the COL4-4 as a copper tube ring terminal. Details such as plating, barrel dimensions, insulation status, current rating, operating temperature and certification are not established by that description. These characteristics should be confirmed from the manufacturer's technical documentation before use in applications where they are critical.
Suitable for Electrical Panels, Machinery and Equipment Wiring
The Partex 4 mm² copper tube ring terminal with M4 stud connection is a practical component for professional electrical installation and assembly work. Its combination of a crimp barrel and closed-ring mounting point makes it suitable for electrical designs requiring a fixed conductor connection to an M4 terminal.
In industrial control panel manufacturing, ring terminals may be used to connect compatible conductors to designated terminal studs or other approved electrical connection points. Using consistently specified terminals and crimping equipment helps support repeatable wiring procedures during panel assembly.
For machinery and industrial equipment, ring terminals provide a practical connection method where equipment manufacturers specify stud-mounted cable terminations. Correctly installed terminals can support dependable electrical connections within appropriately designed equipment assemblies.
The COL4-4 may also be useful for electrical maintenance and refurbishment, including the replacement of damaged or unsuitable terminations. When carrying out maintenance, the replacement terminal must be compatible with the conductor, mounting point and electrical requirements of the equipment.
OEM equipment manufacturers and electrical contractors can benefit from keeping standardised terminal sizes in stock. The 100-piece pack makes the COL4-4 convenient for repetitive assembly tasks involving 4 mm² conductors and M4 stud connections.
Convenient Pack of 100 for Professional Electrical Work
The Partex COL4-4 pack of 100 is well suited to professional users who regularly install crimped ring terminals. Keeping a consistent supply of correctly specified connectors available helps support planned electrical assembly, installation and maintenance work.
For electrical panel manufacturers, a pack of 100 provides a convenient quantity for repeated termination operations. It can also simplify stock control by allowing the same connector specification to be used across compatible equipment builds.
Industrial maintenance departments can keep the terminals as part of their electrical connection component inventory, making them readily available when approved repairs or modifications require a 4 mm² M4 copper ring terminal.
Electrical contractors and equipment installers may also find the bulk pack useful when working on multiple projects that share the same conductor and stud specifications. The pack quantity supports efficient purchasing and reduces the need to source individual terminals for every installation.
Typical Applications
- Termination of compatible 4 mm² copper conductors.
- Electrical connections to compatible M4 studs.
- Industrial electrical control panel wiring.
- Machinery and electrical equipment assembly.
- Suitable electrical distribution equipment connections.
- Industrial automation and control system wiring.
- OEM electrical equipment manufacturing.
- Electrical maintenance and cable termination replacement.
- Workshop cable assembly and preparation.
- Electrical installation refurbishment projects.
- Fixed stud-mounted electrical terminal connections.
- Professional crimp termination applications.
- Electrical equipment servicing and approved wiring modifications.
