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Bard part number 8615-054 is an OEM 20 amp, 3 pole circuit breaker used in select Bard wall mounted HVAC units as a factory optional protective device in the electrical compartment. This breaker is designed to open the circuit during overcurrent or short circuit conditions to help protect internal components and wiring, supporting safe system operation and easier troubleshooting when a fault occurs. Because breaker configurations can vary by model and voltage, confirm your unit’s data plate and the Bard parts list for your exact model to ensure the 8615-054 rating and pole count match your original component before ordering.