Key Benefits Internal Motor Protection: Prevents catastrophic motor failure by cutting power during thermal overload events

Includes the Lennox pressure transducer and ICM controller for standard field installation

IO-Link Integration: Supports smart building infrastructure by providing detailed fault logging and remote parameterization

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

Markel 57640005 Switch 326058-758 Key Benefits Internal Motor Protection:The 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