Trane RLY1040 Relay 320788-703 Industrial Durability: Built with a

Industrial Durability: Built with a focus on long-term mechanical life in demanding refrigeration and HVAC environments

ensuring a straightforward retrofit for existing motor starters

preventing leakage and ghost energy consumption in hydronic systems

The York S1-331-09150-002 Control Board is a critical OEM replacement for Simplicity 1A 2-Stage Control Kit configurations in commercial and residential York equipment

Trane RLY1040 Relay 320788-703 Industrial Durability: Built with aThe Trane RLY1040 Relay is a heavy duty 24V SPDT relay engineered for versatile switching in commercial and residential HVAC systems. As a genuine OEM replacement part, it is designed for high cycle reliability when managing inductive loads like blower motors, fans, and combustion blowers. The single pole double throw (SPDT) configuration acts as a critical intermediary, allowing 24V control signals to switch higher current circuits or manage two