making it suitable for 240V contactor applications in demanding environments

allowing for direct control of equipment without external relays

allowing for remote sensing and flexible installation in walk-in coolers or commercial HVAC units

Versatile Automation: Easily adapts to electronic motor actuators for precise integration with DDC or outdoor reset controllers

Carrier HH18HA126 Limit Switch 321042-401 making it suitable for 240VThe Carrier HH18HA126 Limit Switch is a critical safety component designed for precise thermal regulation in residential and commercial HVAC systems. Engineered as a 90 125F auto limit switch, this OEM replacement part monitors internal heat levels to prevent heat exchanger damage. When the system detects temperatures exceeding the 125F threshold, the switch opens the electrical circuit, effectively shutting down the heating cycle to maintain