Lennox 67171 Fuse 250V Fast Acting 3AG 2A

The Lennox 67171 is a replaceable safety device known as a fuse, specifically a 250-volt, 2-AMP, fast-acting 3AG fuse. It is found in a variety of HVAC equipment, including furnaces, air conditioners, and heat pumps. The fuse functions as a sentry, protecting electrical circuits. If electrical current exceeds the fuse's rated AMPerage, it quickly interrupts the flow of energy. This protects expensive electrical components in the HVAC system by terminating the circuit before excessive current flows through it.