Why Choose the Cembre A40-M20 Copper Crimp Lug?
The Cembre 2330390 A40-M20 is a professional copper compression ring terminal designed for the secure termination of large, ultra-flexible copper conductors. Part of the Cembre A-M series, it provides a dependable, low-resistance connection for high-current electrical equipment, switchgear, control panels and industrial power distribution systems.
Manufactured from electrolytic copper with a purity above 99.95%, the terminal is annealed to improve ductility and resistance to mechanical stress during compression. Its electrolytically tin-plated finish protects the copper against oxidation and corrosion, helping preserve reliable electrical performance throughout the life of the installation.
The A40-M20 is designed for 185 mm² Class 5 and Class 6 flexible copper conductors and features an M20 fixing hole. A chamfered barrel entry helps guide fine conductor strands into the terminal, while the integrated inspection hole allows installers to confirm full conductor insertion before crimping.
Key Advantages
- Designed for 185 mm² ultra-flexible copper conductors.
- M20 stud fixing supports secure high-current connections.
- Manufactured from high-purity electrolytic copper.
- Annealed construction improves ductility and crimping performance.
- Electrolytic tin plating protects against oxidation and corrosion.
- Chamfered barrel entry and inspection hole simplify installation.
Key Features
- Cembre A-M series copper compression ring terminal.
- Manufacturer part number: 2330390.
- Model: A40-M20.
- 185 mm² nominal conductor capacity.
- M20 fixing hole.
- Suitable for Class 5 and Class 6 flexible copper conductors.
- Annealed electrolytic copper construction.
- Electrolytically tin-plated finish.
- Integrated conductor inspection hole.
- Suitable for hexagonal or indent compression crimping.
Reliable Termination for Ultra-Flexible Conductors
Ultra-flexible conductors contain a large number of fine copper strands and require terminals with barrel dimensions specifically engineered for their construction. The Cembre A40-M20 accommodates these conductors while providing excellent conductivity, mechanical pull-out strength and dependable performance in installations exposed to vibration or frequent load changes.
When installed using compatible Cembre crimping tools and dies, the terminal produces a controlled and repeatable compression connection. Its chamfered entry helps prevent fine strands from spreading or becoming damaged during insertion, while the inspection hole provides a clear visual check before the crimping operation begins.
Typical Applications
- Industrial switchgear and switchboards.
- Electrical control panels.
- Welding machines and flexible welding cables.
- Motor control centres.
- Power distribution equipment.
- Battery, inverter and energy-storage systems.
- Industrial machinery and automation equipment.
