What is the primary purpose of a limit switch in electric heating systems?

The primary function of a limit switch in electric heating systems is to prevent overheating. Limit switches are safety devices that monitor the temperature within the heating element or housing. If the temperature exceeds a predetermined threshold, the limit switch activates, cutting power to the heating elements. This essential safety measure protects the system from potential damage and minimizes the risk of fire hazards that can arise from excessive heat.

While other system components may control airflow or regulate temperature, the limit switch focuses specifically on the safety aspect of the heating operation by ensuring that temperatures remain within safe operational limits. This makes it a critical component in maintaining both the efficiency and safety of electric heating systems.