Why Choose the Cembre A48-4ESI Four-Hole Transformer Cable Lug?
The Cembre 2340950 A48-4ESI is a heavy-duty four-hole copper compression cable lug designed for secure connections between large copper conductors and transformer terminals. Manufactured to suit standard ESI transformer fixing arrangements, it provides a stable, low-resistance termination for demanding low-voltage and medium-voltage power distribution applications.
The terminal is manufactured from high-purity electrolytic copper tube, annealed to provide the ductility required for reliable compression crimping. Its electrolytically tin-plated finish helps protect the copper against oxidation and corrosion, supporting dependable electrical performance throughout the service life of the installation.
Designed for 240 mm² stranded or flexible copper conductors, the A48-4ESI features a wide palm with four fixing holes arranged on standard 25 mm by 35 mm centres. This four-bolt configuration distributes mechanical loading across the connection and helps prevent movement under vibration, thermal cycling and high fault-current forces.
Key Advantages
- Four-hole ESI fixing arrangement suits common transformer terminals.
- Designed for 240 mm² copper conductors.
- Provides excellent resistance to rotation, vibration and mechanical movement.
- Manufactured from high-purity electrolytic copper for efficient conductivity.
- Annealed construction supports controlled compression crimping.
- Electrolytic tin plating protects against oxidation and corrosion.
Key Features
- Cembre A-4ESI series transformer cable lug.
- Manufacturer part number: 2340950.
- Model: A48-4ESI.
- 240 mm² nominal conductor capacity.
- Four transformer fixing holes.
- Standard 25 mm by 35 mm hole-centre arrangement.
- Suitable for stranded and flexible copper conductors.
- Annealed electrolytic copper tube construction.
- Electrolytically tin-plated surface finish.
- Integrated conductor inspection hole.
The four-hole palm is designed to match commonly used ESI transformer fixing arrangements, helping installers create stable connections without adapting or drilling the terminal. Distributing the clamping force across four fasteners reduces the risk of palm rotation and provides excellent mechanical security in transformer and power-distribution installations.
When installed using compatible Cembre crimping equipment and the correct die set, the A48-4ESI produces a controlled compression with high pull-out strength and low electrical resistance. The inspection hole allows technicians to verify complete conductor insertion before crimping, helping ensure a consistent and dependable termination.
Typical Applications
- Low-voltage transformer connections.
- Medium-voltage transformer cable terminations.
- Transformer secondary terminals.
- Electrical substations.
- Utility power-distribution networks.
- Industrial switchgear and switchboards.
- High-current busbar and power equipment connections.
