this header assembly upper unit is designed to meet the precise pressure and flow requirements of commercial rooftop units and industrial split systems

Its robust electronic circuitry is built to withstand the thermal cycling and electrical loads typical of high-demand residential split systems

and Reliance brands

Are the ball checks required for all installations

As a primary HVAC replacement part

ABB AF16-30-10-11 Contactor 326058-756 this header assembly upper unitThe ABB AF16 30 10 11 Contactor is a high performance 3 pole industrial contactor designed to provide reliable motor control and power switching in unstable electrical networks. Engineered with advanced AF technology, this 18 Amp contactor features a wide control voltage range of 24 60Vac and 20 60Vdc, allowing a single unit to manage significant voltage fluctuations while reducing energy consumption in your control panel. It serves as a superior,