While similar in function

or if you see a pressure switch stuck open error code on your control board

such as a blocked return

providing a control signal to the HVAC control circuit when flow rates deviate from set thresholds

Eaton Cutler-Hammer BR220 Circuit Breaker 326058-755 While similar in functionThe Eaton Cutler Hammer BR220 is a professional grade double pole circuit breaker engineered for reliable branch circuit protection in Type BR load centers. This 20 amp thermal magnetic breaker features a 120 240Vac voltage rating and a 10,000 AIC (interrupting capacity), providing essential overcurrent and short circuit protection for residential and light commercial HVACR applications. Designed with a standard 1 inch plug on mounting, the BR220