maintaining original system efficiencies and safety certifications without the need for field modifications

operating reliably across a 110-270 VAC range

this coil provides the necessary electromagnetic force to actuate the internal slide of the 4-way reversing valve

Automatic Diagnostics: The auto-reset function simplifies troubleshooting for recurring thermal limit trips versus manual lockouts

Its non-positional mounting design and universal bracket ensure a seamless fit in any orientation

Carrier HH12ZB190 Limit Switch maintaining original system efficiencies andThe Carrier HH12ZB190 Limit Switch is a critical OEM safety component engineered for HVAC high limit protection in gas furnaces and packaged units. As an automatic reset limit switch, this part is designed to open the electrical circuit when internal plenum temperatures reach 190F (cut out) and automatically close once the temperature drops to 150F (cut in). This Normally Closed (NC) switch features a 3 inch insertion length, ensuring accurate sensing