Current Overload Relays are essential electrical components designed to protect motors and other critical equipment from damage caused by excessive current. In industrial settings, where machines and motors are responsible for maintaining operations, protecting them from overloading is crucial. This article aims to explore the significance of Current Overload Relays, their function, types, and applications in modern electrical systems.
What is a Current Overload Relay? A Current Overload Relay is a protective device that monitors the electrical current passing through a circuit and ensures that the current does not exceed safe limits. These relays are primarily used in motor circuits to prevent damage from conditions such as excessive current draw, which can cause overheating and potentially destroy the motor windings or other connected electrical components. When the relay detects a current exceeding the preset value, it disconnects the power supply, thus preventing the motor or equipment from operating under damaging conditions. After the overload condition is resolved, the relay can be manually or automatically reset to allow normal operation to resume.