On the outskirts of cities and the paths in rural areas, electric tricycles are busy shuttling around. They are either carrying fresh agricultural products to the market or transporting daily necessities for residents, thus becoming an indispensable part of people’s lives. In the electrical system of electric tricycles, the DC contactor 150A/60V silently plays an important role, just like a loyal guard, ensuring the stability and safety of the vehicle’s power transmission.

Lao Zhang runs a small hardware store, and his electric tricycle is his capable assistant for daily purchases and deliveries. One day, Lao Zhang received an urgent order and needed to go to the suppliers in the neighboring town to pick up a batch of urgently needed hardware materials. He quickly charged the tricycle fully and then set off on the journey with full confidence.

During the journey, everything went smoothly at first. The electric tricycle was moving forward steadily on the flat road. Lao Zhang listened to the even running sound of the motor while calculating in his mind the purchase cost and profit of this batch of materials. However, when he was driving on a section of road under construction, problems emerged. Due to the bumpy road surface, the vehicle suddenly shook violently. Then, Lao Zhang noticed that the vehicle’s power was obviously weakened and its speed gradually slowed down.

He quickly stopped the vehicle to check. He found that the power display on the dashboard was normal, but the vehicle just couldn’t run normally. Lao Zhang’s heart tightened, and he realized that there might be a problem with the electrical system. Based on his years of experience, he suspected that there was something wrong with the DC contactor 150A/60V. So, he carefully opened the electrical control box of the vehicle and found the DC contactor.

After careful observation, Lao Zhang found that there were obvious ablation marks on the contacts of the DC contactor. Due to the just-occurred bumps, it might have led to poor contact of the contacts instantaneously, thus affecting the normal transmission of current and making the motor unable to obtain sufficient power. Lao Zhang knew very well that if it couldn’t be repaired in time, it would not only delay this important purchasing task but also might cause more serious damage to the vehicle’s electrical system.

Just when Lao Zhang was extremely anxious, he remembered that there was a Master Li in the town who was good at repairing the electrical equipment of electric vehicles. He quickly dialed Master Li’s phone number and briefly explained the situation. Without saying a word, Master Li quickly came with his tools.

After arriving, Master Li conducted a more in-depth inspection and test on the DC contactor. He confirmed Lao Zhang’s judgment. Then, he skillfully used tools to clean and polish the ablated contacts and replaced some damaged parts. During the repair process, Master Li explained to Lao Zhang, “This DC contactor 150A/60V is a key connection point in the vehicle’s electrical system. It is responsible for controlling the on-off of large currents, just like a transportation hub. Once it fails, the current can’t be smoothly transmitted to the motor, and naturally, the vehicle can’t run normally. When using the vehicle usually, try to avoid excessive bumps and overloading operation as much as possible so as to reduce the damage to it.”

After Master Li’s meticulous repair, the DC contactor resumed its normal work. Lao Zhang restarted the tricycle and felt the familiar powerful power. His joy and gratitude were beyond words. He grasped Master Li’s hand tightly and thanked him repeatedly, saying, “Master Li, I really owe it to you this time! If you hadn’t come to help in time, my business would have been in a complete mess.” Master Li smiled and said, “Uncle Zhang, don’t mention it. It’s all what I should do. You should pay more attention to the maintenance of the vehicle in the future, especially key components like the DC contactor.”

Lao Zhang resumed his journey and successfully completed the purchasing task. This experience made him deeply realize the importance of the DC contactor 150A/60V for electric tricycles. Since then, he would conduct a more careful inspection of the vehicle before each trip, especially the electrical system part, to ensure that the DC contactor could work normally, so that his electric tricycle could continue to run stably on the urban and rural roads in the future, safeguarding his life and business.