The locomotive contactor refers to the electrical contact connecting the traction motor and the power supply system, and the connection stability and durability are the most important performance indicators. The contactor is composed of an electromagnetic coil and a contactor contact. When the electromagnetic coil is energized, the magnetic field generated attracts the contactor contact and the fixed contact to contact each other, thus connecting the circuit to realize power supply and control.

Locomotive contacts need to withstand high voltage and high current, so the electrical contact tip must have high electrical conductivity and corrosion resistance. In general, the locomotive contacts will choose material such as gold, silver alloy with base material copper. The electrical conductivity of gold is more than 3 times that of copper, and it also has very good oxidation resistance and can maintain the stability of the connection in a high temperature and humidity environment. However, its cost is higher too, so most of the locomotive contact will use silver and silver alloy material instead which has good performance .

The locomotive contacts play a very important role in the control system, which involves human safety. These materials are carefully selected to ensure stable and reliable electrical conduction in locomotive contactors, while resisting wear and environmental impacts during long-term use. When designing and manufacturing contactors, factors such as weather resistance, chemical stability, and cost-effectiveness are also taken into consideration.

ZHJ has rich experience in locomotive contact, we use specific material production process to meet your requirement. You’re most welcome to send us inquiry to info@shzhj.com, we will be glad to provide contact material solutions.