Trane RLY3874 .1S/100Hr Time Delay Relay

The Trane RLY3874 is a time delay relay, a crucial component in various HVAC systems like furnaces, air conditioners, and heat pumps. It functions like a programmable timer, offering a wide range of delays, from a mere 0.1 seconds to a staggering 100 hours. This flexibility makes it suitable for diverse applications.

Imagine it as a conductor for your HVAC equipment. Upon receiving a signal, the relay waits for the pre-programmed duration before activating the designated equipment. This delay prevents components from starting simultaneously, reducing stress on the system and ensuring smooth operation. For example, it can delay the fan activation after the compressor starts in an air conditioner, allowing the refrigerant pressure to stabilize before air circulation begins.