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2181990 Cembre A3-U4 COPPER TERMINAL
Cembre A3-U4 non-insulated electrolytic copper fork terminal for 16 mm² conductors with M4 fork opening and tin-plated finish for industrial electrical connections.
£0.5528
Why Choose the Cembre A3-U4 Fork Terminal?
The Cembre A3-U4 (2181990) is a premium-quality non-insulated copper fork terminal designed to provide secure, low-resistance electrical connections for industrial, commercial and OEM applications. Manufactured from high-purity electrolytic copper with a durable electrolytic tin-plated finish, it offers excellent electrical conductivity, corrosion resistance and long-term reliability in demanding electrical installations.
Designed for professional electricians, panel builders and machine manufacturers, the A3-U4 is suitable for 16 mm² copper conductors. Its open fork design allows quick installation and removal without fully removing the fixing screw, helping reduce maintenance time while maintaining a secure electrical connection.
Featuring an M4 fork opening, the Cembre 2181990 is ideal for switchgear, industrial control panels, power distribution equipment, machinery and automation systems requiring dependable bolted electrical terminations.
Key Advantages
- Manufactured from 99.95% electrolytic copper for excellent conductivity.
- Electrolytic tin-plated finish improves corrosion resistance.
- Designed for 16 mm² copper conductors.
- M4 fork terminal enables quick installation and servicing.
- Silver-brazed seam provides excellent mechanical strength.
- Suitable for demanding industrial and OEM applications.
Key Features
- Cembre A3-U4 non-insulated fork terminal.
- Manufacturer Part Number: 2181990.
- Alternative product code: A3-U4.
- Suitable for 16 mm² copper conductors.
- M4 fork opening.
- High-purity electrolytic copper construction.
- Electrolytic tin-plated finish.
- Suitable for professional crimping applications.
Reliable Electrical Connections for Industrial Installations
Fork terminals provide secure electrical connections while simplifying installation and maintenance. Their open-ended design allows equipment to be disconnected without completely removing the fixing screw, helping reduce servicing time while maintaining excellent electrical performance.
The Cembre A3-U4 is widely used in industrial control panels, switchgear, machine building, electrical distribution equipment and OEM assemblies where reliable bolted electrical connections are essential.
Typical Applications
- Industrial control panels.
- Electrical switchgear.
- Machine building and OEM equipment.
- Power distribution systems.
- Industrial automation installations.
- Electrical maintenance and repair.
Technical Specifications
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| Palm Angle | Straight (0°) | |
|---|---|---|
| Conductor Size | 16 mm² | |
| Stud Size | M4 | |
| Material | Copper | |
| Device Type | Copper Tube Lug | |
| Manufacturer Part Number | 2181990 | |
| Product type | Non-insulated copper fork terminal | |
| Conductor size | 16 mm² | |
| Stud size | M4 | |
| Terminal style | Fork / Spade | |
| Material | 99.95% electrolytic copper | |
| Surface finish | Electrolytic tin plated | |
| Operating temperature | -50°C to +150°C | |
| ETIM Classification | EC001052 | |
| Pack quantity | 100 pieces | |
| HS Code | 85369010 | |
| Country of Manufacture | Italy |
Frequently Asked Questions
What cable size is the Cembre A3-U4 designed for?
It is designed for 16 mm² copper conductors.
What stud size does this fork terminal fit?
The terminal is designed for M4 fixing studs.
What material is the terminal manufactured from?
It is manufactured from high-purity electrolytic copper with an electrolytic tin-plated finish for excellent conductivity and corrosion resistance.
Why use a fork terminal?
Fork terminals allow faster installation and maintenance because they can be removed without completely removing the fixing screw.
Where is the Cembre A3-U4 commonly used?
It is commonly installed in industrial control panels, machinery, switchgear and power distribution equipment.
Trusted by Electrical Professionals Worldwide
Cembre electrical termination products are trusted by panel builders, OEM manufacturers and electrical contractors worldwide for delivering reliable, standards-compliant electrical connections in demanding industrial environments.
