Carrier HH18HA452

Carrier HH18HA452 is a temperature rollout switch designed for over-temperature protection in HVAC systems. With a 250°F rating, this manual-reset, SPST device provides reliable safety shutoff and helps prevent equipment damage.

Engineered for durability, this OEM-grade switch delivers precise temperature sensing, quick response, and easy integration into Carrier units.

In operation, the device senses rising temperatures and opens the circuit when the setpoint is reached, then requires a manual reset to resume operation, ensuring deliberate restart after a fault. The 250°F rating makes it suitable for furnaces, air handlers, and other HVAC equipment prone to high-temperature risk. Its compact, rugged design fits standard control panels and supports easy field replacement, helping minimize downtime.

• 250°F temperature rating for reliable protection
• Manual reset ensures controlled restart after trip
• SPST configuration for simple wiring
• OEM Carrier part for seamless compatibility
• Durable, industrial-grade construction for long life

Choose the Carrier HH18HA452 for dependable over-temperature protection that fits Carrier systems and other compatible HVAC setups.