Cembre 2489520 BSCL4 colour-coded long-barrel non-insulated butt splice connector for joining 25 mm² copper conductors using compression crimping.
£2.38
The Cembre 2489520, also identified as the BSCL4, is a premium colour-coded long-barrel butt splice connector designed for permanently joining copper conductors in industrial, commercial and utility electrical installations. Part of the trusted Cembre BSCL series, this non-insulated compression connector delivers outstanding electrical conductivity together with exceptional mechanical strength for demanding applications.
Manufactured from annealed electrolytic copper with a purity greater than 99.9% and finished with electrolytic tin plating, the BSCL4 provides excellent corrosion resistance and long-term reliability. Its long-barrel construction increases the compression area, producing secure, low-resistance cable joints when installed using compatible Cembre compression tooling.
Designed for 25 mm² copper conductors, the connector features tapered conductor entries at both ends together with an integrated central conductor stop to ensure accurate conductor positioning before crimping. The grey colour coding enables quick identification of the correct connector and die combination during installation.
Compression butt splice connectors create permanent low-resistance joints between copper conductors while maintaining high mechanical strength. The Cembre BSCL range is engineered for demanding industrial environments where dependable long-term electrical performance is essential.
The BSCL4 combines a long compression barrel with annealed copper construction, allowing consistent deformation during crimping and maximising conductor contact. Its tin-plated surface provides additional protection against corrosion and oxidation throughout the service life of the installation.
| Series | BSCL |
|---|---|
| Manufacturer part number | 2489520 |
| Product type | Colour-coded butt splice connector |
| Connector style | Straight-through long-barrel splice |
| Conductor material | Copper |
| Conductor cross-section | 25 mm² |
| Approximate conductor size | 4 AWG |
| Connector material | Annealed electrolytic copper |
| Surface finish | Electrolytic tin plating |
| Colour code | Grey |
| Die index | 4 |
| Overall length | 66 mm |
| Cable stripping length | 34 mm |
| Operating temperature | -50 °C to +150 °C |
| Maximum operating voltage | Up to 35 kV |
| Termination method | Compression crimping |
| Compliance | UL 486A-486B, RoHS compliant |
| HS Code | 85369010 |
| Country of Manufacture | Italy |
The BSCL4 is designed to permanently join two compatible 25 mm² copper conductors using compression crimping.
This connector is designed for 25 mm² copper conductors, approximately equivalent to 4 AWG.
No. The Cembre BSCL4 is a non-insulated butt splice and should be insulated after installation where required.
The electrolytic tin plating improves corrosion resistance while maintaining excellent electrical conductivity.
Yes. The connector incorporates a central stop to ensure both conductors are inserted to the correct depth before crimping.
Cembre BSCL compression connectors are trusted by industrial electricians, OEM machine builders, panel manufacturers and utilities for producing secure, long-lasting copper cable joints.
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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...