Designed strictly for air service

the 93-7B-HD is the head mechanism only

Quick Installation: Standard 460V

It features a standard 48-frame diameter and is rated for 208-230V single-phase applications

Operational Reliability: Restores factory-spec performance to optimize flow control and pressure regulation

Trane SWT3209 Switch 321702-401 Designed strictly for air serviceThe Trane SWT3209 is a heavy duty high pressure cutout switch designed for critical safety monitoring in commercial HVAC systems. This SPST manual reset switch is engineered to protect the compressor and refrigerant circuit by opening the electrical circuit when internal pressures exceed safe operating limits. Specifically rated for high pressure applications, the SWT3209 features a factory calibrated 650 PSI open setpoint and a 500 PSI close