motor overload relay： essential protection for electric motors
Release time:2025-08-27 15:41:50
Electric motors are essential components in various industries, driving everything from industrial machinery to household appliances. However, these motors are vulnerable to damage due to overloading, which can result in overheating, insulation failure, and ultimately, motor failure. This is where a Motor Overload Relay (MOR) becomes critical. The Motor Overload Relay is designed to prevent such damage by protecting motors from running under unsafe conditions. This article explores the functionality, working principles, and applications of Motor Overload Relays, emphasizing their importance in motor protection.
What is a Motor Overload Relay?
A Motor Overload Relay is an electrical protection device used to monitor the current flowing through a motor's circuit. It ensures that the motor operates within its safe limits by disconnecting the motor from the power supply when the current exceeds preset limits. The primary purpose of the overload relay is to protect the motor from damage due to prolonged overcurrent, which can cause overheating and permanent damage to the motor’s internal components.
How Does It Work?
Motor Overload Relays typically use one of two common mechanisms： thermal protection or electronic monitoring.
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