Description
The Carrier HH680352 Main Limit Switch 190F-20F is a temperature-sensitive safety control component used in compatible HVAC systems and heating systems to monitor internal operating temperatures. mounted within the furnace cabinet near the heat exchanger or burner section, this switch opens the electrical circuit if temperatures exceed it and automatically resets after cooling. Its role is to protect the system from overheating, support prevention of internal component failure, and maintain safe furnace operation during heating cycles. This is commonly used in residential and light commercial forced-air heating equipment.
