Description
The Patterson-Kelley 10-0370-0713 is a time delay relay intended for use in 120-volt AC HVAC systems. It functions as an electronic switch that adds a predefined delay to the activation or deactivation of another electrical circuit. After being connected to the system, the relay gets electricity and waits for a predetermined amount of time which might be hours or milliseconds before closing the circuit and permitting current to flow. In HVAC applications, this timed delay has several benefits. The relay may arrange the activation of many components in a complicated system in a sequential manner to guarantee correct operation. For instance, it can wait to turn on the fan until after the furnace fires, letting the heat exchanger warm up beforehand.
