What is the first action to take if an electrical motor fails?

When an electrical motor fails, the first action to take is to push the reset (thermal overload switch). This is important because many motors are equipped with thermal overload protection to prevent damage due to overheating. If the motor exceeds safe operating temperatures, the thermal overload switch automatically interrupts the power supply to the motor to protect it.

By resetting this switch, you can sometimes restore functionality to the motor if it has tripped due to temporary overload conditions. If the switch resets successfully and the motor operates normally afterward, then further troubleshooting may not be necessary at that moment.

The other options may be warranted but generally come into play after checking the reset switch. Inspecting the power supply requires an understanding of whether the problem is due to electrical input things like fuses or breakers, while calling for maintenance is often a step down the line after confirming the basics. Inspecting the motor for damage is an important step but should be done after establishing that the motor is not simply in a state of overload protection. Thus, engaging with the thermal overload switch is the most immediate and appropriate initial response when faced with motor failure.