Products Description
Pure Copper Rivet-Type Contacts are solid copper rivet contact components designed specifically for high-load switches, relays, contactors, and circuit breakers. Manufactured from pure copper (≥99.9% purity) using a combination of cold heading and precision turning, these contacts are ideal for applications demanding superior conductivity and thermal stability, such as DC charging piles, photovoltaic inverters, battery energy storage systems (BESS), and high-voltage DC (HVDC) relays.
Unlike silver alloy contacts, this product leverages the exceptional electrical conductivity (≥58 MS/m) and thermal conductivity of pure copper to deliver lower temperature rise and more stable contact resistance under low-voltage, high-current conditions. Featuring a round-head copper rivet design, the head diameter and shank length can be customized according to client specifications, ensuring compatibility with automated riveting assembly lines.
Product Advantages
Electrical Performance Advantages
The Custom Red Copper Solid Rivet, using pure copper as its base material, exhibits more stable contact resistance performance in dry, low-sulfur environments compared to silver-plated contacts or copper alloy contacts. The copper oxide film (Cu₂O) on the surface is easily broken under mechanical pressure, exposing a fresh metal interface. This allows the contacts to maintain low and stable contact resistance in frequently operated relays and contactors.
Thermal Cycling Stability
The coefficient of thermal expansion of pure copper (16.5 × 10⁻⁶ /K) is highly compatible with commonly used conductive substrates (such as copper busbars and copper alloy supports). Under the thermal cycling loads caused by the start-up and shutdown of renewable energy inverters, the riveted interface will not develop microcracks or loosen due to accumulated thermal stress. This material-structure synergistic design is a key engineering basis for the widespread recognition of Solid Copper Rivet Contacts for Switches in the power electronics field.
Cost-Performance Balance
Compared to silver-based contacts, this type of contact offers the optimal cost-conductivity ratio in non-corrosive and non-arc environments. For applications such as DC-side power distribution in energy storage systems and internal connections in photovoltaic combiner boxes, where current conduction is primary and arc-breaking loads are relatively light, Copper Rivet Contact Elements are a rational choice that balances performance and supply chain economics.
Manufacturing Advantages
All CNC equipment on the production line uniformly locks down the processing parameters for Solid Copper Rivet Connection Components throughout the entire process. Manual intervention is minimal, ensuring that the dimensional accuracy and riveting mechanical properties of finished products within the same batch are consistently controlled within engineering limits, resulting in outstanding batch performance consistency.
A passivation process without harmful residues is applied to Copper Contact Points. The surface protection treatment of pure copper contacts complies with global environmental management standards for new energy electrical components, containing no heavy metal leaching substances and meeting the safety certification requirements for automotive and energy storage equipment.
Leveraging a flexible stamping production line, the line adapts to the differentiated order needs of Pure Copper Solid Contact. Small-batch customized prototyping during the R&D phase and large-batch standard orders during mass production can both be scheduled and delivered, simultaneously matching the material needs of customers in both new product development and large-scale production.
The entire production line features a dedicated forming program optimized for contacts. Cold forging and riveting processes are continuously integrated, without the intervention of segmented welding composite processes, fully preserving the original conductivity and mechanical properties of the pure copper substrate.
Industry Application Cases
New Energy Vehicle Low-Voltage Relays
Red Copper Contact Rivets for Relays serve as conductive contacts in vehicle control circuits, withstanding high and low temperatures, as well as vibrations, to stably control the on/off operation of vehicle air conditioning and charging auxiliary circuits.
01
Commercial and Industrial Energy Storage Cabinet Micro Switches
Solid Copper Rivet Contacts for Switches carry the current in energy storage charging and discharging control circuits, exhibiting no significant increase in resistance during long-term operation in a sealed, high-temperature cabinet.
02
Household/Industrial Low-Voltage Circuit Breakers
Round Head Metal Copper Rivets with standardized contacts adapted to the circuit breaker's opening and closing structure, dispersing arc heat and extending the overall lifespan of the switch.
03
Photovoltaic Combiner Box Control Relays
Pure Copper Electrical Contact Rivets utilize a high thermal conductivity substrate to reduce the temperature rise of the combiner circuit, avoiding overheating faults under high-current photovoltaic conditions.
04
Industrial Control Equipment Micro Switches
Custom Red Copper Solid Rivets with customized contact specifications adapted to the confined assembly spaces of special industrial control systems, suitable for high-frequency signal and current switching scenarios.
05
contact us
If R&D and procurement engineers in the fields of new energy and power electronics need Pure Copper Rivet-Type Contacts technology selection solutions, material testing reports, and bulk supply quotations to match equipment operating conditions, they can directly send the device electrical parameters and assembly drawings for consultation and coordination.
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