Electrical appliances used on ships. With the increasing level of electrification and automation of ships, the power of ship power stations is growing, and the role of ship distribution electrical appliances (such as various fuses and circuit breakers) is becoming increasingly important. In addition, various power equipment used in ships, such as servos, anchors, loaders, and winches, have high requirements for the ship’s control electrical appliances (such as various contactors, relays, controllers, master controllers, resistors, and variable resistors) used in their electric propulsion due to their complex working conditions and large load changes.

Used to connect the circuit between the moving contact on the ship and the stationary contact on the left after closing. When the relay is subjected to a strong impact, the two steel balls absorb the impact energy, generate a force that moves towards the middle, and push the jumper to move in the direction of arrow A. The lower end of the jumper presses against the contact, limiting the bouncing motion of the moving contact or the misoperation of the stationary contact, thereby ensuring the reliable operation of the contact system under impact.