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2163590 Cembre S6-M4 RING TERMINAL
Cembre 2163590 (S2.5-M6) non-insulated electrolytic copper ring terminal with electrolytic tin plating for 1.5-2.5 mm² conductors and M6 (1/4 inch) stud connections.
£0.1964
Why Choose the Cembre 2163590 Non-Insulated Copper Ring Terminal?
The Cembre 2163590, also identified as S2.5-M6, is a premium non-insulated copper ring terminal designed to provide secure, low-resistance electrical terminations for stranded copper conductors. Manufactured from high-purity electrolytic copper with an electrolytically tin-plated finish, it delivers excellent electrical conductivity, corrosion resistance and dependable long-term performance in demanding industrial and commercial installations.
Designed for professional electricians, panel builders and OEM machine manufacturers, the terminal incorporates a brazed seam barrel for exceptional mechanical strength together with an internally rifled barrel that improves conductor grip and electrical contact after crimping. The closed ring design provides a secure, vibration-resistant fixing for permanent electrical connections.
Suitable for 1.5–2.5 mm² (16–14 AWG) conductors and an M6 (1/4") stud, the Cembre 2163590 is ideal for industrial control panels, switchgear, machinery, automation systems and power distribution equipment where dependable cable terminations are essential.
Key Advantages
- Manufactured from 99.9% pure electrolytic copper.
- Electrolytically tin-plated for excellent corrosion resistance.
- Closed ring design provides a secure mechanical connection.
- Brazed seam barrel delivers exceptional mechanical strength.
- Internally rifled barrel improves conductor grip and pull-out resistance.
- Suitable for demanding industrial and commercial electrical installations.
Key Features
- Manufacturer: Cembre.
- Manufacturer reference: S2.5-M6.
- Cembre ordering code: 2163590.
- Non-insulated ring terminal.
- Electrolytic copper construction.
- Electrolytically tin-plated finish.
- Suitable for 1.5–2.5 mm² (16–14 AWG) conductors.
- M6 (1/4") stud fixing.
- Brazed seam construction.
- Operating temperature: -50 °C to +150 °C.
Reliable Electrical Connections for Industrial Installations
Cembre S-Series ring terminals are manufactured from electrolytic copper strip with a purity exceeding 99.9% and electro-tinned to resist oxidation and corrosion. The brazed seam construction provides exceptional mechanical strength while the internally rifled barrel enhances conductor retention, ensuring reliable crimped electrical connections throughout the service life of the installation.
The enclosed ring design provides a permanent, vibration-resistant fixing that is ideal for industrial control systems, electrical distribution equipment and machinery operating in demanding environments.
Typical Applications
- Industrial control panels.
- Electrical switchgear.
- Power distribution systems.
- Industrial machinery.
- Automation systems.
- Maintenance and retrofit projects.
Technical Specifications
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| Connection Orientation | Straight | |
|---|---|---|
| Stud Size | M6 | |
| Conductor Size | 1.5–2.5 mm² | |
| Insulation Type | Non-insulated | |
| Device Type | Ring Terminal | |
| Part number | 2163590 | |
| Manufacturer series | S2.5-M6 | |
| Product type | Non-insulated copper ring terminal | |
| Terminal style | Ring terminal | |
| Material | Electrolytic copper (>99.9% purity) | |
| Surface finish | Electrolytic tin plating (minimum 3 µm) | |
| Conductor size | 1.5–2.5 mm² (16–14 AWG) | |
| Stud size | M6 (1/4") | |
| Operating temperature | -50 °C to +150 °C | |
| Barrel type | Brazed seam with internal rifling | |
| Insulation | None | |
| Packaging | Pack of 100 | |
| HS Code | 85369010 | |
| Country of Manufacture | Italy |
Frequently Asked Questions
What is the Cembre 2163590 used for?
It is used to terminate stranded copper conductors with a secure ring connection for bolted electrical terminations.
What cable size does it support?
The terminal accommodates 1.5–2.5 mm² (16–14 AWG) copper conductors.
What stud size is it designed for?
The Cembre 2163590 is designed for an M6 (1/4") stud.
Why is the terminal tin plated?
The electrolytic tin plating improves corrosion resistance while maintaining excellent long-term electrical conductivity.
Where is this terminal commonly installed?
It is widely used in industrial control panels, switchgear, automation systems, machinery and electrical distribution equipment.
Trusted by Electrical Professionals Worldwide
Cembre electrical connection products are trusted worldwide by panel builders, OEM manufacturers and electrical contractors for delivering reliable, durable and high-performance electrical terminations across demanding industrial applications.
