Cembre 2170810 A2-L4 non-insulated 90-degree tin-plated copper compression ring terminal for terminating 10 mm² copper conductors onto M4 studs.
£1.42
The Cembre 2170810, also designated as the Cembre A2-L4, is a professional 90-degree non-insulated copper compression ring terminal designed to terminate 10 mm² copper conductors onto M4 threaded studs. As part of the established Cembre A-L angled ring terminal series, it provides a secure, low-resistance electrical connection where space restrictions or cable-routing requirements make a right-angle terminal preferable to a straight cable lug.
Manufactured from annealed electrolytic copper with a purity above 99.95%, the Cembre A2-L4 combines excellent electrical conductivity with the ductility required for dependable compression crimping. Its electrolytic tin-plated finish helps protect the copper against oxidation and corrosion, supporting reliable long-term performance in industrial control panels, machinery and electrical distribution equipment.
The Cembre 2170810 features a 90-degree connection angle, an M4 fixing hole with a 4.3 mm diameter and a chamfered easy-entry barrel for straightforward conductor insertion. An integrated inspection hole allows installers to confirm that the conductor is correctly positioned before crimping, helping produce consistent and mechanically secure cable terminations.
A 90-degree compression ring terminal allows a conductor to approach the connection point at a right angle, reducing cable bending and simplifying routing inside confined electrical enclosures. This configuration is particularly useful where limited clearance prevents the use of a conventional straight ring terminal.
The Cembre A-L series creates a permanent electrical connection by compressing the annealed copper barrel around the conductor strands. When installed using a compatible professional crimping tool and the correct die, the terminal provides excellent electrical continuity, high pull-out resistance and dependable performance under vibration and thermal cycling.
| Series | A-L Angled Ring Terminals |
|---|---|
| Manufacturer part number | 2170810 |
| Product type | Non-insulated angled copper compression ring terminal |
| Conductor cross-section | 10 mm² |
| Equivalent conductor size | 8 AWG |
| Compatible conductor | Flexible and low-stranded copper |
| Stud size | M4 |
| Fixing-hole diameter | 4.3 mm |
| Connection angle | 90° |
| Palm width | 10 mm |
| Dimension N | 4 mm |
| Dimension M | 5 mm |
| Barrel length A | 8 mm |
| Barrel internal diameter | 4.6 mm |
| Barrel external diameter | 6.8 mm |
| Cable stripping length | 9 mm |
| Material | Annealed electrolytic copper with purity above 99.95% |
| Surface treatment | Electrolytic tin plating |
| Crimping geometry | Hexagonal or indent |
| Inspection hole | Yes |
| Easy-insertion barrel | 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 2170810 is used to terminate 10 mm² copper conductors onto M4 threaded studs where a compact 90-degree cable connection is required.
The terminal is designed for 10 mm² flexible and low-stranded copper conductors, equivalent to approximately 8 AWG.
The Cembre 2170810 is designed for M4 studs and bolts and has a nominal fixing-hole diameter of 4.3 mm.
The 90-degree angled palm allows the cable to approach the fixing point from the side, making the terminal suitable for confined spaces and installations where straight cable routing is impractical.
The conductor should be stripped to approximately 9 mm, inserted fully into the barrel and crimped using a compatible professional compression tool with the correct die for a 10 mm² conductor.
Cembre A-L angled copper compression terminals are widely used by electrical contractors, panel builders and OEM manufacturers to create secure, space-efficient and mechanically reliable cable connections.
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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...