What happens to the coils contained within solenoids, relays, starters, and contactors when they fail?

When the coils within solenoids, relays, starters, and contactors fail, they typically must be replaced. This is due to the nature of how electromagnetic coils operate. When a coil fails, it often does so as a result of overheating, breakdown of insulation, or physical damage. Such failure usually results in an open circuit, meaning that electricity cannot pass through the coil to create the magnetic field necessary for the device to function properly.

Unlike some other components that might be repairable or reconditioned, electrical coils generally do not lend themselves well to repairs. Attempting to fix a damaged coil can be complicated and may not yield reliable results. Furthermore, the cost and effort associated with repairing a coil often outweigh the benefits compared to simply replacing it with a new, functional unit. This ensures that the overall system operates safely and efficiently, adhering to electrical standards and codes.

In contrast, devices like circuit breakers or fuses may allow for replacement of parts or resetting, but coils typically require complete replacement to ensure integrity and functionality of the electrical equipment.