The York S1-FRSR35 Dual Element Time Delay Fuse 600V is a protective electrical component designed to safeguard HVAC equipment from overcurrent and short circuit conditions. It operates with a dual-element design that allows temporary current surges while interrupting sustained overloads, ensuring reliable circuit protection. Commonly used in HVAC systems such as air conditioners, heat pumps, and furnaces, this fuse helps prevent damage to critical components. Its time-delay feature enhances system stability, reduces nuisance interruptions, and supports long-term equipment performance and operational safety.