Description
The Littelfuse LLC843F10P liquid level control is used in low-level cutoff protection in HVAC system applications. It has an input voltage of 120 VAC, the fixed time delay of 3 seconds, and sensing resistance of 10 kΩ. This part comes with an SPDT output relay, which is optically isolated and has an LED to indicate the relay activation. It is most useful in situations where there is a need to pump up or pump down a system to avoid any harm that may be caused by low levels of liquid. The liquid level control also has a power outage manual reset function which allows it to reset when power is restored and conditions permit, making it suitable for HVAC systems.
