CARRIER Limit Switch: Mfr Part # HH19ZA940
SKU 3G-OTH-103670
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Frequently Asked Questions
What is the CARRIER HH19ZA940 limit switch used for?
The CARRIER HH19ZA940 limit control is a safety device used in HVAC systems to monitor temperature and prevent overheating. It interrupts the burner or fan circuit if temperatures exceed safe limits, protecting heat exchangers and ensuring reliable furnace operation in residential and light commercial applications.
What are the specifications of the CARRIER HH19ZA940 limit switch?
The CARRIER HH19ZA940 is a limit control with manufacturer part number HH19ZA940. It is designed as a replacement HVACR control for temperature safety applications. For detailed electrical ratings and temperature set points, consult the original equipment documentation or contact 3G Electric for technical support.
Where to buy the CARRIER HH19ZA940 limit switch worldwide?
3G Electric supplies the CARRIER HH19ZA940 limit switch worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your location. Contact our team to place an order or request a quote for this replacement HVACR control.
How to install the CARRIER HH19ZA940 limit switch?
To install the CARRIER HH19ZA940 limit switch, first disconnect power to the HVAC system. Remove the old limit control and mount the new unit in the same location, ensuring proper sensor placement. Reconnect wiring per the manufacturer's diagram, then restore power and test operation. Always follow local codes and safety procedures.
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3G Electric supplies CARRIER replacement hvacr controls, switches & thermostats. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















