Circuit Integrity: Provides dedicated power to the thermostat

Using this exact replacement casting for 157-R series ensures seamless compatibility with existing head mechanisms

Delivering a robust 300 lb-in torque

Replacing a higher-speed motor with this unit will reduce airflow and may cause the compressor to trip on high pressure

Does this board require programming in the field

Markel 57640005 Switch 326058-758 Circuit Integrity: Provides dedicated powerThe Markel 57640005 L325F Auto Reset Limit Switch is a critical safety component designed for high limit thermal protection in industrial heating and HVAC systems. As an veteran grade OEM replacement part, this switch features an integrated capillary tube for precise temperature sensing and a protective cap to maintain environmental integrity. The L325F specification ensures the circuit opens when temperatures hit the 325F threshold, providing