The purpose of overloads is to protect which component from damage?

The purpose of overloads is to protect which component from damage?

• A. Generator from overcurrent
• B. Transformer from overcurrent
• C. Motor from overcurrent
• D. Relay from overcurrent

Answer: (C)

Overloads are specifically designed to protect motors from overcurrent conditions. When a motor experiences an overload, typically caused by a mechanical jam or excessive load, it draws more current than it is rated for. The overload protection interrupts the current flow to the motor, preventing excessive heating, which could lead to insulation failure and damage to the motor windings. Motors operate under a certain range of load conditions, and if they exceed their rated current, the thermal protection mechanism of the overload device will activate, shutting down the motor before permanent damage occurs. This is crucial for maintaining motor longevity and operational reliability. While generators, transformers, and relays also have protective measures against overcurrent, their protection mechanisms differ in function and application compared to the specific overload protection assigned to motors.

Overloads are specifically designed to protect motors from overcurrent conditions. When a motor experiences an overload, typically caused by a mechanical jam or excessive load, it draws more current than it is rated for. The overload protection interrupts the current flow to the motor, preventing excessive heating, which could lead to insulation failure and damage to the motor windings.

Motors operate under a certain range of load conditions, and if they exceed their rated current, the thermal protection mechanism of the overload device will activate, shutting down the motor before permanent damage occurs. This is crucial for maintaining motor longevity and operational reliability.

While generators, transformers, and relays also have protective measures against overcurrent, their protection mechanisms differ in function and application compared to the specific overload protection assigned to motors.