Carrier HH18HA191 Control

The Carrier HH18HA191 Temp Actuated Control is a critical high-limit switch designed for HVAC safety and performance. As a Factory Authorized Part, this SPST disc-style switch provides reliable circuit interruption when system temperatures exceed safe operating thresholds, preventing potential thermal damage to heat exchangers and internal components. Engineered for seamless integration, it is rated for 5A at 240 VAC and 10A at 120 VAC, utilizing standard quick-connect terminals for efficient field replacement. This OEM temperature switch is a versatile component frequently found in Carrier, Bryant, and Payne air handlers, furnaces, and room air conditioners. Its compact limit control design ensures responsive monitoring even in tight mounting locations. For contractors, using this HVAC replacement part ensures the unit maintains its original engineering specifications and safety compliance. Ensure the HH18HA191 part number matches your specific equipment requirements to maintain optimal system sequencing and protection.

Key Benefits:

• OEM Compatibility: Precision-engineered for Carrier HVAC systems, ensuring a perfect drop-in fit for residential and commercial units.
• Thermal Protection: Acts as a dependable high-limit safety switch to prevent overheating and equipment failure.
• Electrical Versatility: Dual-voltage rated for 120V and 240V circuits, accommodating a wide range of fan motor and control board applications.
• Rapid Response: Temperature actuated disc design provides immediate circuit breakage once the thermal setpoint is reached.
• Durable Construction: Built to withstand the high-cycle demands of modern heating and cooling equipment.

Common Questions:

What are the electrical ratings for the HH18HA191?
This temperature actuated control is rated for 10 Amps at 120 VAC and 5 Amps at 240 VAC, making it suitable for both standard and high-voltage control circuits.

Can this switch be used in room air conditioners?
Yes, the HH18HA191 is commonly utilized in window units and PTACs as a safety limit or thermostat-linked control switch.

Is the HH18HA191 an auto-reset or manual-reset switch?
This specific Carrier limit switch is typically an automatic reset model that restores the circuit once the sensed temperature returns to safe levels, though verifying the specific logic of your HVAC control board is recommended.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.