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2180390 Cembre A3-M16 COPPER TERMINAL
Cembre 2180390 A3-M16 non-insulated tin-plated copper compression ring terminal for terminating 16 mm² copper conductors onto M16 threaded studs.
£7.65
Why Choose the Cembre 2180390 A3-M16 Copper Compression Ring Terminal?
The Cembre 2180390, also designated as the Cembre A3-M16, is a professional non-insulated copper compression ring terminal designed to terminate 16 mm² copper conductors onto M16 threaded studs. Part of the established Cembre A-M terminal series, it provides a secure, low-resistance connection for industrial switchgear, control panels, machinery and electrical distribution equipment.
Manufactured from high-purity electrolytic copper tube, the Cembre A3-M16 is engineered to deliver excellent electrical conductivity and the mechanical strength needed to resist vibration and conductor pull-out. The terminal is annealed for optimum ductility during compression and electrolytically tin plated to protect the copper against oxidation and corrosion.
The Cembre 2180390 combines a 16 mm² short-barrel connection with a large M16 ring palm. Its funnel-shaped barrel entry helps guide flexible and low-stranded conductors into position, while the integrated inspection hole allows the installer to verify full conductor insertion before crimping.
Key Advantages
- Designed for reliable termination of 16 mm² copper conductors.
- M16 stud compatibility for larger bolted connection points.
- High-purity electrolytic copper provides excellent electrical conductivity.
- Annealed construction supports consistent compression crimping.
- Electrolytic tin plating improves oxidation and corrosion resistance.
- Inspection hole enables verification of correct conductor insertion.
Key Features
- Cembre A-M copper compression terminal series.
- Manufacturer part number: 2180390.
- Terminal designation: A3-M16.
- 16 mm² / approximately 6 AWG conductor compatibility.
- M16 ring connection for secure bolted mounting.
- Short barrel with a funnel-shaped entry.
- Integrated inspection hole for conductor-position verification.
- Suitable for professional compression crimping.
Reliable Compression Termination for M16 Connections
Copper compression terminals create a permanent electrical connection by compressing the terminal barrel tightly around the conductor strands. When correctly installed, the resulting joint provides excellent electrical continuity, strong pull-out resistance and dependable performance under vibration, thermal cycling and mechanical stress.
The large M16 ring configuration makes the Cembre A3-M16 suitable for equipment with substantial threaded connection points, while its short barrel provides a compact termination for 16 mm² conductors. For optimum performance, the terminal should be installed using a compatible professional crimping tool and the correct die specified for the conductor and terminal series.
Typical Applications
- Industrial switchgear and electrical distribution equipment.
- Control panels and electrical cabinets.
- Busbar and equipment-terminal connections.
- Motor control centres and industrial machinery.
- OEM automation systems and cable assemblies.
- Marine, utility and industrial maintenance applications.
Technical Specifications
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| Number of Fixing Holes | 1 | |
|---|---|---|
| Conductor Size | 16 mm² | |
| Stud Size | M16 | |
| Material | Copper | |
| Palm Angle | Straight (0°) | |
| Suitable Conductor Material | Copper | |
| Device Type | Copper Tube Lug | |
| Series | A-M Ring Terminals | |
| Manufacturer part number | 2180390 | |
| Product type | Non-insulated copper compression ring terminal | |
| Conductor cross-section | 16 mm² | |
| Approximate AWG equivalent | 6 AWG | |
| Compatible conductor | Flexible and low-stranded copper conductor | |
| Stud size | M16 | |
| Connection angle | 180° / straight | |
| Flange shape | Ring | |
| Number of fixing holes | 1 | |
| Material | Annealed electrolytic copper tube | |
| Copper purity | Greater than 99.9% | |
| Copper grade | Cu-OF CW008A | |
| Surface treatment | Electrolytic tin plating | |
| Barrel configuration | Short barrel | |
| Barrel entry | Funnel shaped and internally chamfered | |
| Installation method | Compression crimping | |
| Inspection hole | Yes | |
| Easy-insertion barrel | Yes | |
| Insulated | No | |
| Maximum voltage rating | 11 kV | |
| Minimum operating temperature | -50 °C | |
| Maximum operating temperature | +150 °C | |
| RoHS compliant | Yes | |
| HS Code | 85369010 | |
| Country of Manufacture | Italy |
Frequently Asked Questions
What is the Cembre 2180390 used for?
The Cembre 2180390 is used to terminate 16 mm² copper conductors onto M16 threaded studs in switchgear, machinery and industrial power-distribution equipment.
What conductor size does the Cembre A3-M16 support?
The terminal is designed for 16 mm² flexible and low-stranded copper conductors, equivalent to approximately 6 AWG.
What stud size is compatible with the Cembre 2180390?
The Cembre 2180390 is designed for use with M16 threaded studs and bolts.
Does the Cembre A3-M16 include an inspection hole?
Yes. The barrel incorporates an inspection hole so the installer can confirm that the conductor has been inserted fully before crimping.
How should the Cembre 2180390 be installed?
The conductor should be stripped to the specified length, inserted fully into the funnel-shaped barrel and compressed using a compatible professional crimping tool with the correct die for a 16 mm² terminal.
Trusted by Electrical Professionals Worldwide
Cembre A-M copper compression terminals are trusted by electrical contractors, panel builders, OEM manufacturers and maintenance engineers for secure, durable and electrically efficient cable connections.
