Relay Purpose Explained and MyMROmarts Part Recommendations

Relay is a basic component of heavy equipment. It is widely used in various automation systems. Relays are used to control large currents through small currents. It further realizes its automated operation and protection of circuits. So, what is a relay? What exactly does it do? In this article, MyMROmarts will explore how relays work, and what they are used for, and introduce you to the many types of relay parts that MyMROmarts offers to help you choose the right one.

 

What is an electrical relay?

An electrical relay is an electrical switching device. It is capable of manipulating high-power loads in low-power control circuits. Simply put, a relay controls a larger current by receiving a smaller electrical signal. At its core is an electromagnet. When the electromagnet is energized, it produces a magnetic field that attracts metal contacts for the purpose of opening or closing the circuit.

 

Relays are widely used in the field of construction machinery vehicles and power systems. For example, during the starting process of construction machinery vehicles, the electrical relay helps the battery to provide a large current to the starter motor.

 

What does an electrical relay do?

The main function of a relay is to control a high current using a small current to automate the control of an electrical circuit. This design improves the safety of electronic control systems and also prevents excessive current from damaging them. Specifically, relays play a key role in the following aspects:

 

1. Controlling high-current circuits

Relays allow small-current control signals to operate high-current circuits, solving the problem of controlling large currents directly with switches.

 

2. Isolating different circuits

Relays can be isolated between high and low-voltage circuits. The low-voltage control system will not be affected by the high-voltage circuit.

 

3. Automatic operation

Relays can be controlled by sensors to perform tasks such as turning on lights, starting engines, and shutting down machines.

 

4. Protection of circuits

Relays also protect electronic control systems from damage caused by sudden increases in current. Avoiding equipment failures such as short circuits or overloads.

 

Electrical relay purpose

Relays are used in a wide variety of applications, covering almost all electrical equipment and systems that require automatic control, protection, and isolation. The following are a few major application scenarios:

 

1. Heavy Equipment

Relays are commonly used for starting systems, fuel shut-off devices, and lighting controls in construction machinery vehicles. Like starter motor solenoid relays and fuel shut-off solenoid relays play a key role in vehicles.

 

2. Household appliances

Many household appliances such as refrigerators, air conditioners, washing machines, etc., use relays to control the motor, compressor, and other parts of the start and stop.

 

3. Power system protection

Relays are used in power systems to monitor current and voltage and prevent short circuits, overloads, and other faults in electrical equipment.

 

Types of aftermarket relays sold by MyMROmarts

If you are looking for quality replacement parts for electrical relays, MyMROmarts is a trusted supplier.MyMROmarts offers several types of aftermarket relays, such as fuel shutoff solenoid relays, starter motor solenoid relays, and preheat plug-time relays. These aftermarket relays are available for many brands of heavy-duty equipment, such as Cat, John Deere, Cummins, Perkins, Yanmar, Kubota, and more.

 

At MyMROmarts, we sell aftermarket relays at affordable prices to help you reduce your equipment replacement costs. Feel free to contact us for more information!