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2330390 Cembre A40-M20 COPPER TERMINAL
Cembre 2330390 A40-M20 tinned copper compression ring terminal for 185 mm² Class 5 and Class 6 ultra-flexible copper conductors with an M20 fixing hole.
£11.64
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.
Technical Specifications
Tick the specs you need, then view products that match.
| Number of Fixing Holes | 1 | |
|---|---|---|
| Device Type | Copper Tube Lug | |
| Conductor Size | 185 mm² | |
| Stud Size | M20 | |
| Material | Copper | |
| Palm Angle | Straight (0°) | |
| Suitable Conductor Material | Copper | |
| Conductor Class | Class 5 (flexible) | |
| Series | A-M Ring Terminals | |
| Manufacturer part number | 2330390 | |
| Product type | Copper compression ring terminal | |
| Nominal conductor size | 185 mm² | |
| Compatible conductor classes | Class 5 and Class 6 flexible copper | |
| Stud size | M20 | |
| Fixing-hole diameter | 21 mm | |
| Palm width | 37.5 mm | |
| Overall length | 91 mm | |
| Barrel length | 38 mm | |
| Cable stripping length | approximately 38 mm | |
| Internal barrel diameter | 21 mm | |
| External barrel diameter | 25.5 mm | |
| Terminal material | Annealed electrolytic copper | |
| Surface finish | Electrolytic tin plating | |
| Inspection hole | Yes | |
| Barrel entry | Chamfered | |
| Crimping geometry | Hexagonal or indent | |
| Operating temperature | -50°C to +150°C | |
| HS Code | 85369010 | |
| Country of Manufacture | Italy |
Frequently Asked Questions
What is the Cembre 2330390 used for?
The Cembre 2330390 is used to terminate a 185 mm² ultra-flexible copper conductor onto electrical equipment with an M20 fixing point.
What is the model designation for Cembre part 2330390?
The manufacturer model designation for Cembre part number 2330390 is A40-M20.
What conductor size does the A40-M20 support?
The terminal is designed for 185 mm² Class 5 and Class 6 flexible copper conductors.
What size fixing stud is required?
The A40-M20 features a 21 mm fixing hole designed for installation onto an M20 stud.
Why is the terminal tin plated?
The electrolytic tin-plated finish helps protect the copper against oxidation and corrosion while maintaining dependable electrical conductivity.
Trusted by Electrical and Industrial Professionals
Cembre A-M compression terminals are trusted by panel builders, electrical contractors and industrial engineers for reliable termination of ultra-flexible copper conductors in demanding power applications.
