Which statement best describes the action of a melting alloy overload relay when an overload occurs?

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Multiple Choice

Which statement best describes the action of a melting alloy overload relay when an overload occurs?

Explanation:
Melting alloy overload relays protect motors by opening the circuit when current exceeds the rated level. When an overload occurs, the fusible alloy (solder) melts, releasing a mechanism that trips the starter control circuit and disconnects power to the motor. This is why that description best fits the action. The other outcomes—energizing the motor, contacts welding shut, or the coil simply overheating—do not represent the deliberate action of a melting alloy overload relay, which is to open and trip to stop the motor.

Melting alloy overload relays protect motors by opening the circuit when current exceeds the rated level. When an overload occurs, the fusible alloy (solder) melts, releasing a mechanism that trips the starter control circuit and disconnects power to the motor. This is why that description best fits the action. The other outcomes—energizing the motor, contacts welding shut, or the coil simply overheating—do not represent the deliberate action of a melting alloy overload relay, which is to open and trip to stop the motor.

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