Cembre 2340950 A48-4ESI four-hole tinned copper compression transformer lug for 240 mm² stranded or flexible copper conductors with an ESI fixing arrangement.
£39.90
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.
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.
| Series | A-4ESI Transformer Lugs |
|---|---|
| Manufacturer part number | 2340950 |
| Product type | Four-hole copper compression transformer lug |
| Nominal conductor size | 240 mm² |
| Compatible conductor material | Copper |
| Compatible conductor types | Stranded and flexible copper |
| Number of fixing holes | 4 |
| Typical stud size | M8 |
| Fixing-hole diameter | approximately 9 mm |
| Fixing-hole centres | 25 mm × 35 mm |
| Internal barrel diameter | 21.1 mm |
| Palm width | 61 mm |
| Overall length | 128 mm |
| Dimension M | 20 mm |
| Dimension N | 15 mm |
| Terminal material | Annealed electrolytic copper |
| Surface finish | Electrolytic tin plating |
| Inspection hole | Yes |
| Installation method | Compression crimping |
| HS Code | 85369010 |
| Country of Manufacture | United Kingdom (includes NI) |
The Cembre 2340950 is a four-hole compression cable lug used to connect a 240 mm² copper conductor to a transformer terminal or other equipment with a compatible ESI fixing arrangement.
The manufacturer model designation for Cembre part number 2340950 is A48-4ESI.
The terminal is designed for 240 mm² stranded or flexible copper conductors.
The A48-4ESI has four fixing holes arranged on standard 25 mm by 35 mm centres, suitable for common ESI transformer fixing patterns.
The electrolytic tin-plated finish protects the copper against oxidation and corrosion while helping maintain reliable electrical conductivity.
Cembre A-4ESI transformer lugs are trusted by utility contractors, cable jointers and power-system engineers for mechanically secure, high-conductivity transformer connections in demanding electrical networks.
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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...