Cembre 2480020 L03-M copper compression through connector for joining 0.25-1.5 mm² copper conductors. Manufactured from electrolytic tin-plated copper with a central conductor stop.
£0.16
The Cembre 2480020 (L03-M) is a high-quality copper compression through connector (butt splice) designed for permanently joining low-voltage copper conductors. As part of the proven Cembre L-M Series, it provides secure, low-resistance electrical splices for industrial, commercial and utility electrical installations.
Manufactured from more than 99.9% pure electrolytic copper and finished with electrolytic tin plating, the connector delivers outstanding electrical conductivity together with excellent resistance to corrosion. The annealed construction ensures optimum ductility for reliable compression while increasing resistance to mechanical stress.
The L03-M features chamfered barrel entries to simplify conductor insertion together with an internal central stop that ensures both conductors are positioned correctly before crimping. It is ideal for permanently joining 0.25–1.5 mm² copper conductors using compatible Cembre crimping tools and dies.
Cembre L-M Series through connectors provide permanent compression joints for copper conductors in electrical installations. The combination of annealed electrolytic copper, tin plating and a central conductor stop ensures consistent, high-quality electrical connections with excellent mechanical strength.
When installed using compatible Cembre crimping tools and dies, these connectors deliver dependable long-term performance in switchboards, industrial control panels, electrical maintenance and power distribution systems.
| Series | L-M |
|---|---|
| Part number | 2480020 |
| Product type | Copper compression through connector |
| Conductor size | 0.25–1.5 mm² |
| Inside diameter | 1.8 mm |
| Overall length | 15 mm |
| Material | Electrolytic copper (>99.9% purity) |
| Surface finish | Electrolytic tin plating |
| Central stop | Yes |
| Operating temperature | -50°C to +150°C |
| Maximum voltage | 11 kV |
| HS Code | 85369010 |
| Country of Manufacture | Italy |
It is used to permanently join two 0.25–1.5 mm² copper conductors using compression crimping.
The L03-M is suitable for copper conductors from 0.25 mm² to 1.5 mm².
The internal stop ensures both conductors are inserted to the correct depth before crimping for a reliable electrical joint.
Electrolytic tin plating improves corrosion resistance while maintaining excellent electrical conductivity.
Yes. It is designed for installation using compatible Cembre compression tools and dies.
Cembre L-M Series compression through connectors are trusted by electricians, panel builders and industrial engineers for creating durable, low-resistance cable joints in demanding electrical installations.
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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...