Neutral Block: Multiple Coatings To Meet Requirements
As the core component in electrical connections, the neutral block plays a crucial role in neutral wire conduction and fixed wiring. The quality of its coating directly affects the conductivity, corrosion resistance, and service life. To adapt to different scenarios and needs, the product is equipped with a variety of coating options, covering mainstream types such as tin plating, silver plating, and nickel plating, balancing performance, cost, and practicality, and can meet the personalized needs of various electrical wiring in industrial, civilian, outdoor, and other fields.
Tin plated coating is the most widely used basic product with outstanding cost-effectiveness, suitable for most conventional neutral wire connection scenarios. Adopting high-purity tin electroplating, the coating is uniform and dense, and the thickness meets the requirements of GB/T 12599-2002 standard. It is generally not less than 15 μ m in general environments, and can be increased to over 30 μ m in heavily corrosive environments. Its core advantages are oxidation resistance and easy welding, which can effectively avoid the formation of poor conductors due to copper substrate oxidation, reduce contact resistance, and facilitate welding. It is suitable for conventional wiring such as household lighting and ordinary distribution boxes, balancing practicality and economy.
The silver plated coating focuses on high performance and is suitable for scenarios with high requirements for conductivity efficiency and stability. Silver has the highest conductivity among metals, and its coating has undergone anti discoloration and passivation treatment to avoid the impact of sulfurization blackening on performance. The thickness can be selected from 3-22 μ m depending on the scene. This coating has extremely low contact resistance, which can minimize current loss and temperature rise to the greatest extent possible. It is resistant to insertion and tear, suitable for high-power equipment, precision electrical circuits, and other scenarios that require strict conductivity performance, ensuring stable and efficient neutral wire conduction.
Nickel plating focuses on corrosion resistance and wear resistance, and is suitable for harsh environments such as humidity and high dust. The coating has high hardness and strong chemical stability, with a thickness generally not less than 6 μ m. It can be increased to over 12 μ m in heavily corrosive environments and can pass the 48-96 hour acetic acid salt spray test, effectively resisting environmental erosion. Its weldability is slightly inferior to tin plating, but its protective performance is outstanding, suitable for connecting neutral wires in outdoor electrical equipment and humid environments, extending the service life of terminals and reducing maintenance costs.
All types of coatings have undergone strict quality testing, adhering to the characteristics of copper alloy substrates without defects such as missed plating or blistering, ensuring a tight bond with the terminal body, while balancing safety and durability. Various coating options can be flexibly matched according to actual needs, achieving the optimal balance between performance and cost, and fully meeting the neutral wire connection needs in different scenarios.
