Cembre 2163890 S6-M12 non-insulated tin-plated electrolytic copper compression ring terminal for 4-6 mm² conductors with M12 stud fixing.
£0.55
The Cembre 2163890 (S6-M12) is a premium non-insulated copper compression ring terminal engineered to provide secure, low-resistance electrical connections in demanding industrial and commercial installations. Manufactured from high-purity electrolytic copper with a durable electrolytic tin-plated finish, it delivers excellent conductivity, corrosion resistance and long-term reliability.
Designed for professional electricians, panel builders and OEM machine manufacturers, the S6-M12 features a brazed seam barrel with internal knurling to maximise conductor retention and ensure a consistent, high-quality crimp. Suitable for 4–6 mm² copper conductors, it provides a reliable bolted connection using an M12 fixing stud.
Its robust construction makes it ideal for electrical control panels, switchgear, machinery, motor control centres and power distribution equipment where dependable cable terminations are essential.
Compression ring terminals provide permanent, vibration-resistant cable terminations with extremely low electrical resistance. When installed using the correct crimping dies and tooling, they deliver dependable long-term electrical and mechanical performance in demanding industrial environments.
Cembre's S Series terminals combine precision manufacturing, high-purity electrolytic copper and corrosion-resistant tin plating to ensure reliable cable terminations for machinery, automation systems, switchgear and power distribution equipment.
| Series | S Series Ring Terminals |
|---|---|
| Manufacturer Part Number | 2163890 |
| Product type | Non-insulated compression ring terminal |
| Material | Electrolytic copper |
| Surface finish | Electrolytic tin plated |
| Conductor size | 4–6 mm² |
| Stud size | M12 |
| Operating temperature | -50°C to +150°C |
| Barrel construction | Brazed seam with internal knurling |
| Connection type | Compression crimp |
| Packed quantity | 100 |
| HS Code | 85369010 |
| Country of Manufacture | Italy |
It provides a secure crimped ring termination for copper conductors in industrial electrical installations.
The S6-M12 is designed for 4–6 mm² copper conductors.
The ring terminal is designed for an M12 stud or bolt.
The internal knurling improves conductor grip, increasing pull-out resistance and helping achieve a secure crimp connection.
It is widely used in electrical panels, machinery, switchgear, motor control centres and industrial power distribution systems.
Cembre compression terminals are trusted by electrical contractors, panel builders and industrial OEMs for producing safe, reliable and long-lasting electrical connections in demanding industrial applications.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...