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RDAU Bimetallic Parallel Groove (PG) Connectors
The RDAU is a high-performance bimetallic parallel groove (PG) connector engineered to create secure, long-lasting electrical connections between dissimilar conductors—specifically aluminium and copper. It is ideal for use in overhead power transmission and distribution systems, substations, and other demanding electrical installations.
Constructed from a high-conductivity aluminium alloy and electrolytic copper, the RDAU is designed to reduce power loss and enhance electrical reliability. Its corrosion-protected bimetallic interface, oxide-inhibiting contact grease, and shear-head bolt system ensure consistent performance, even in extreme environmental conditions. Available in multiple configurations, the RDAU combines durability, ease of installation, and international compliance to meet the evolving needs of utility and industrial electrical networks.
Description
The RDAU provides a durable and corrosion-resistant solution for connecting aluminium and copper conductors in electrical systems.
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Designed to join aluminium (main) and copper (tap) conductors
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High-conductivity aluminium alloy body (99.5% purity)
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Copper contact plate made from electrolytic copper
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Corrosion-protected bimetallic interface between body and contact
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Filled with oxide-inhibiting contact grease for enhanced performance
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Equipped with shear-head and stainless steel bolts for secure, tamper-evident installation
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Parallel groove design ensures firm, reliable contact and minimal slippage
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Compliant with international standards (e.g., IS5561:2018)
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Compatible with a variety of insulation systems (heat shrink, cold shrink, slip-on)
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Designed for ease of installation using standard torque wrenches
Applications:
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Overhead transmission and distribution line connections
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Copper-to-aluminium transition joints
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Substation tap-offs and equipment connections
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Industrial and utility power infrastructure
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Electrical system upgrades and retrofits
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Installations requiring high corrosion resistance and conductivity
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Environments with UV exposure, temperature fluctuations, or high humidity