Cembre 2170310 A2-M12 non-insulated tin-plated copper compression ring terminal for terminating 10 mm² copper conductors onto M12 studs.
£0.78
The Cembre 2170310, also designated as the Cembre A2-M12, is a high-quality non-insulated copper compression ring terminal designed to terminate 10 mm² copper conductors onto M12 threaded studs. As part of the established Cembre A-M ring terminal series, it provides a secure, low-resistance electrical connection for industrial control panels, switchgear, machinery and power distribution equipment.
Manufactured from annealed electrolytic copper with a purity above 99.95%, this terminal offers excellent electrical conductivity, mechanical strength and ductility during crimping. Its electrolytic tin-plated finish helps protect the copper against oxidation and corrosion, supporting dependable long-term performance in demanding industrial environments.
The Cembre 2170310 features a 13.2 mm fixing hole, a 19.1 mm palm width and an easy-insertion barrel that simplifies conductor positioning. An integrated inspection hole allows installers to confirm that the conductor has been fully inserted before crimping, helping produce consistent and mechanically reliable cable terminations.
Compression ring terminals create permanent electrical connections by mechanically compressing the terminal barrel around the conductor strands. A correctly completed crimp provides excellent electrical continuity, high pull-out resistance and dependable performance in installations exposed to vibration, thermal cycling and continuous electrical loads.
The Cembre A-M series is designed for electrical contractors, panel builders and industrial engineers who require repeatable termination quality. Its annealed copper construction, easy-insertion barrel and inspection hole simplify installation while helping ensure secure and consistent connections when used with a compatible professional crimping tool.
| Series | A-M Ring Terminals |
|---|---|
| Manufacturer part number | 2170310 |
| Product type | Non-insulated copper compression ring terminal |
| Conductor cross-section | 10 mm² |
| Equivalent conductor size | 8 AWG |
| Compatible conductor | Flexible and low-stranded copper |
| Stud size | M12 |
| Fixing-hole diameter | approx. 13.2 mm |
| Palm width | approx. 19.1 mm |
| Overall length | approx. 39.6 mm |
| Barrel section length | approx. 27.4 mm |
| Barrel internal diameter | approx. 4.6 mm |
| Barrel external diameter | approx. 6.9 mm |
| Cable stripping length | approx. 8.9 mm |
| Material | Annealed electrolytic copper with purity above 99.95% |
| Surface treatment | Electrolytic tin plating |
| Crimping geometry | Hexagonal or indent |
| Inspection hole | Yes |
| Number of palm holes | 1 |
| Minimum operating temperature | -50 °C |
| Maximum operating temperature | +150 °C |
| RoHS compliant | Yes |
| UL standard | UL 486A-486B |
| HS Code | 85369010 |
| Country of Manufacture | Italy |
The Cembre 2170310 is used to terminate 10 mm² copper conductors onto M12 threaded studs, creating a secure compression-crimped electrical connection.
The terminal is designed for 10 mm² flexible and low-stranded copper conductors, equivalent to approximately 8 AWG.
The Cembre 2170310 is designed for M12 studs and bolts and has a nominal fixing-hole diameter of approximately 13.2 mm.
The electrolytic tin-plated finish helps protect the copper terminal against oxidation and corrosion while maintaining excellent electrical conductivity.
The copper conductor should be stripped to approximately 8.9 mm, inserted fully into the barrel and crimped using a compatible professional compression tool and the correct die.
Cembre A-M copper compression terminals are widely used by electrical contractors, panel builders and industrial engineers to create secure, conductive and mechanically reliable cable terminations.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...