Description
The Trane RLY03524 Low Voltage Control Relay 24V Coil 277-480V HS-172 is an electrical switching system that allows low-voltage control signals to operate higher-voltage equipment safely and efficiently. It operates using a coil that energizes an internal contact mechanism, closing or opening power circuits as needed by system demand. In HVAC systems, it is used in air handling units, rooftop units, and industrial heating equipment to control compressors, fans, and auxiliary loads. It is connected within the control panel and supports safe circuit isolation, reliable switching, and consistent system performance under electrical load conditions.
