The Lennox 37J56 Circuit Breaker Switch is a protective electrical component designed for use in Lennox HVAC systems. Rated at 250V and 3AMP, it safeguards system components from electrical overloads and short circuits by automatically interrupting power when faults occur. This circuit breaker ensures safe and reliable operation of furnaces, air handlers, and other HVAC equipment. Bui... https://www.partshnc.com/37j56-lennox-circuitbreakerswitch-250v-3amp