Hellermann Tyton 25 mm Copper Link: High-Conductivity Crimp Connector for 4 B&S/AWG Cables

Precision-Engineered Copper Link for Demanding Electrical Installations

The Hellermann Tyton 25 mm Copper Link is a professional-grade crimp connector designed to create secure, low-resistance joints in 4 B&S/AWG cable applications. Manufactured from 99.9% pure copper and finished with a tin electroplating (510 microns), this link ensures excellent conductivity and corrosion resistance, making it suitable for automotive, marine, and industrial power systems.

Unlike generic connectors that may suffer from poor conductivity or premature oxidation, this copper link is annealed to enhance ductility, reducing the risk of cracking under vibration or thermal cycling. Its bellmouth entry simplifies cable insertion, minimising strand damage during assembly and ensuring a reliable crimp every time.

Key Features

• 99.9% IACS conductivity for minimal power loss and heat generation
• Tinned copper construction resists corrosion in harsh environments, including marine and coastal installations
• Annealed for high ductility (40% elongation), preventing stress fractures in mobile or high-vibration setups
• Bellmouth profile guides conductors smoothly, reducing installation time and strand damage
• Wide operating temperature range from -55 C to +155 C, suitable for engine bays and extreme climates
• Compliant with AS/NZS 4325 Part 1, meeting Australian and New Zealand safety standards

Built for Reliable, Long-Term Performance

Electrical connections are often the weakest link in any power system. The Hellermann Tyton 25 mm Copper Link addresses this by combining high-purity copper with a low oxygen content (30 ppm max), which significantly reduces the risk of internal oxidation that can degrade conductivity over time. The tin plating provides an additional barrier against moisture and salt spray, making this link an excellent choice for marine wiring, 4WD dual battery systems, and solar installations where long-term reliability is critical.

With a total resistivity of just 1.72 micro-ohm cm, this link maintains efficient current flow even under high loads. Its 7.1 mm internal diameter and 47.6 mm length are optimised for 25 mm conductors (4 B&S/AWG), providing a snug fit that maximises contact area and mechanical strength after crimping.

Applications Where Quality Matters

This copper link is ideal for professionals and DIY enthusiasts who demand dependable connections in:

• Automotive and 4WD electrical systems battery cables, winch wiring, and auxiliary circuits
• Marine and boat wiring corrosion-resistant design for saltwater environments
• Solar and off-grid power low-resistance joints for charge controllers and battery banks
• Industrial equipment control panels, motor connections, and heavy machinery
• Caravan and RV power systems reliable connections for 12 V and 24 V setups

Note: This link is rated for a maximum current typical of 25 mm cable, but actual capacity depends on installation conditions. Typical de-rating factors apply consider ambient temperature, bundling, and duty cycle when sizing your system.

Why Choose Hellermann Tyton?

Hellermann Tyton is a globally recognised brand in cable management and connectivity, known for rigorous quality control and compliance with international standards. This copper link is no exception, delivering consistent performance that reduces the risk of voltage drop, overheating, and connection failure problems that can lead to costly downtime or safety hazards in critical systems.

Upgrade your electrical connections with the Hellermann Tyton 25 mm Copper Link and experience the difference that precision engineering makes. Whether you’re rewiring a boat, building a custom 4WD setup, or maintaining industrial equipment, this link provides the durability and conductivity your project demands.

Add to cart now and secure reliable, long-lasting connections for your next installation.