In today’s technologically advanced world, electrical equipment is integral to various industries. Protecting these devices from damage caused by excessive current is crucial, and this is where the Current Overload Relay (COR) comes into play. This protective device serves as a critical component in ensuring the safe operation of electric motors and other equipment by continuously monitoring electrical current and preventing overload situations.
What is a Current Overload Relay? A Current Overload Relay is an electromechanical device designed to monitor the current flowing through an electrical circuit. It can detect overcurrent conditions that could lead to overheating and potential damage to machinery. When the current surpasses a predetermined threshold, the COR will open its contacts, breaking the circuit and stopping the flow of electricity to the connected load, thus protecting it from harm. How Does it Work? The operation of a Current Overload Relay is quite straightforward yet effective. It continually measures the current through the circuit. When this current approaches or exceeds the preset limit, the relay activates. Most overload relays include adjustable settings that allow operators to define what constitutes an overload condition.