Ergom TMA 120/16mm Sealed Al-Cu Cable Lug

The Ergom TMA 120/16mm sealed bimetallic cable lug is a professional-grade component engineered for creating secure and long-lasting electrical connections between aluminum and copper conductors. By utilizing advanced bimetallic technology, this lug effectively prevents galvanic corrosion that typically occurs when dissimilar metals are joined, ensuring consistent electrical performance and safety in demanding environments. Its sealed design provides an additional layer of protection against moisture and environmental contaminants, making it a reliable choice for critical power distribution systems.

Advantages

The primary benefit of this bimetallic lug is its ability to bridge the gap between aluminum and copper wiring without the risk of oxidation or degradation at the contact point. The robust construction ensures high mechanical strength and excellent conductivity, which are essential for maintaining stable electrical circuits under load. Furthermore, the sealed nature of the lug simplifies installation in outdoor or humid conditions, as it minimizes the need for additional sealing measures to protect the conductor core from environmental exposure.

Suitable for

• Connecting aluminum power cables to copper busbars or terminals
• Industrial electrical distribution networks
• Commercial building power infrastructure
• Outdoor electrical installations requiring moisture protection

This product may not be suitable for applications involving pure copper-to-copper or aluminum-to-aluminum connections, as standard monometallic lugs are more cost-effective and appropriate for those scenarios. It is also not intended for use in high-vibration environments where specialized vibration-resistant connectors are required.

Key specifications

• Conductor cross-section: 120 mm²
• Mounting hole diameter: 16 mm
• Material: Bimetallic (Aluminum-Copper)
• Design: Sealed type

To install the lug, first strip the insulation from the aluminum cable to the appropriate length, ensuring the conductor surface is clean. Insert the conductor fully into the aluminum barrel of the lug. Use a professional hydraulic or manual crimping tool with the correct die set specified for this lug size to achieve a permanent, gas-tight connection. Ensure the copper palm is securely bolted to the target terminal using appropriate hardware, applying proper torque to prevent overheating.

What to consider before purchase

• Verify the cross-section of your aluminum cable matches the 120 mm² specification
• Check the mounting bolt size to ensure compatibility with the 16 mm hole
• Ensure you have access to the correct crimping tools for bimetallic lugs

For optimal performance and longevity, always use a compatible anti-oxidation contact grease when preparing the aluminum conductor and ensure the crimping process is performed according to the manufacturer's technical guidelines to maintain the integrity of the sealed connection.