Carrier HH19ZA155 Limit Switch 323613-751 Reliable operation is generally achieved

Reliable operation is generally achieved within 75 to 100 feet of air tubing

As a veteran-grade flame signal amplifier

For two-way sweat valves

while the IP65 enclosure rating protects internal components against dust and water ingress

Carrier HH19ZA155 Limit Switch 323613-751 Reliable operation is generally achievedThe Carrier HH19ZA155 Limit Switch is a critical safety component designed for precise thermal monitoring in residential and commercial HVAC systems. Engineered for automatic reset functionality, this disc style switch features a normally closed circuit that opens upon reaching its fixed setpoint of 155F to prevent heat exchanger damage and potential fire hazards. Once the system temperature drops to the 115F close threshold, the circuit re engages,