Trane SWT1403 Pressure Switch Els PW 17895 The 3H0400780002 is a stalk

The 3H0400780002 is a stalk mount switch specifically designed to reach into the airflow for accurate sensing

Standardized Electrical Specs: Features a 120V primary and 24V secondary configuration to meet the specific demands of modern HVAC control logic

Contractors often utilize this 24 volt HVAC relay to restore proper fan timing and multi-point circuit isolation

Common signs include the blower fan running continuously without ignition

Versatile Connectivity: Air sample line connectors are designed to accept 1/8"

Trane SWT1403 Pressure Switch Els PW 17895 The 3H0400780002 is a stalkAs a seasoned technician, you know that a reliable Trane SWT1403 Pressure Switch is the first line of defense against compressor slugging and evaporator freeze ups. This genuine OEM Trane replacement part, also identified by the updated manufacturer number SWT01403, is a high precision low pressure control switch designed for critical monitoring in residential and commercial HVAC systems. Operating with a calibrated 7 22# setpoint, this switch is