Cembre 2161890 S2.5-M3.5/1 non-insulated electrolytic copper ring terminal for 1.5-2.5 mm² conductors with an M3.5 stud connection.
£0.26
The Cembre 2161890 is a high-quality non-insulated copper ring terminal engineered to provide secure, permanent electrical connections for copper conductors in industrial and commercial installations. Manufactured by Cembre, this terminal combines premium electrolytic copper construction with precision manufacturing to deliver excellent electrical conductivity, outstanding mechanical strength and long-term reliability.
Designed for 1.5–2.5 mm² (16–14 AWG) conductors, the terminal features an M3.5 fixing hole and is supplied as the S2.5-M3.5/1 variant. The brazed seam barrel with internal knurling enhances conductor retention while the electrolytic tin-plated finish provides excellent corrosion resistance for demanding industrial environments.
Suitable for professional compression crimping, the Cembre 2161890 is widely used by panel builders, OEMs, machine manufacturers and maintenance engineers requiring dependable electrical terminations in control panels, switchgear and automation equipment.
Ring terminals provide permanent bolted electrical connections with excellent vibration resistance and consistently low contact resistance. When installed using the correct crimping tools, they provide dependable long-term performance across demanding industrial environments.
Cembre S-Series terminals are manufactured from electrolytic copper with a purity exceeding 99.9%, then brazed, annealed and electrolytically tin-plated to maximise conductivity, corrosion resistance and mechanical durability. Internal knurling further improves conductor grip and pull-out resistance.
| Series | S Range Non-Insulated Ring Terminals |
|---|---|
| Part number | 2161890 |
| Product type | Non-insulated ring terminal |
| Conductor size | 1.5–2.5 mm² (16–14 AWG) |
| Stud size | M3.5 |
| Material | Electrolytic copper (99.95% purity) |
| Surface finish | Tin plated (minimum 3 μm) |
| Operating temperature | -50°C to +150°C |
| ETIM classification | EC001052 |
| Installation method | Compression crimp |
| GTIN | 8016692159553 |
| Pack quantity | 100 pieces |
| HS Code | 85369010 |
| Country of Manufacture | Italy |
It is a non-insulated ring terminal designed for secure bolted electrical connections on copper conductors in industrial electrical installations.
The terminal is designed for 1.5 mm² to 2.5 mm² copper conductors.
The terminal is designed to fit an M3.5 fixing stud.
It is manufactured from high-purity electrolytic copper with a corrosion-resistant electrolytic tin-plated finish.
No. The Cembre 2161890 is a non-insulated ring terminal intended for professional compression crimping applications.
Cembre ring terminals are trusted by electrical contractors, panel builders and OEM manufacturers worldwide for delivering reliable, durable and standards-compliant electrical connections in demanding industrial applications.
● 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...