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The TRANE RLY01873 is a double-pole double-throw (DPDT) interlock relay rated for 10 amps at 125 volts AC. This relay is designed for control circuit applications in TRANE HVAC systems, where it provides switching and interlocking functions between system components. The DPDT configuration allows it to control two separate circuits simultaneously, making it suited for sequencing, interlocking, or switching tasks within a central air system. Licensed HVAC technicians install this component as part of system troubleshooting, repair, or control board servicing.
This relay is used in residential and light commercial HVAC applications, particularly within TRANE central air systems where interlock control logic is required. Typical installation scenarios include replacing a failed relay on a control board or within an equipment panel where circuit switching is needed to coordinate compressor, fan, or auxiliary component operation. This is an OEM TRANE part intended for use by qualified HVAC service professionals.
Designed as an OEM-style replacement relay for TRANE central air conditioning and HVAC control system applications.
Installation should be performed by a licensed HVAC technician. Disconnect and lock out all power to the unit before removing or installing any relay. Verify the replacement relay matches the original electrical ratings before energizing the system. Follow applicable local electrical codes and manufacturer wiring diagrams when reconnecting control circuit terminals.
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