543-045

Ensure the safe and efficient operation of your heating system with this premium 3-inch high limit switch. Designed as a critical safety component for residential furnaces and HVAC equipment, this thermal limit control monitors internal temperatures to prevent overheating. The switch is engineered to automatically interrupt the electrical circuit if the temperature reaches the pre-set 220°F safety threshold, protecting the heat exchanger and preventing potential fire hazards. Featuring a 20°F reset differential, it allows the system to resume normal operation once safe temperatures are restored. This durable replacement part is essential for maintaining HVAC system longevity and ensuring home climate safety.
Type: High Limit Safety Switch
Size: 3-inch probe
Dimensions: 3 inches × unknown × unknown
Application: Used primarily in gas-fired furnaces, electric heaters, and air handling units to monitor heat exchanger temperatures and provide overheat protection.
Specifications: Limit Temperature: 220°F; Temperature Differential: 20°F; Switch Type: Normally Closed (opens on temperature rise); Automatic reset functionality.