With its normally open fail-safe mechanism

Full Installation Kit: Includes a sealed vent elbow

as an OEM TXV valve replacement kit

this specific model is calibrated for upper thermal monitoring

Trane RLY1873 Relay 318518-761 With its normally open fail-safeThe Trane RLY1873 Relay is a heavy duty, field proven 24V DPDT Interlock Relay designed for critical switching applications in commercial and residential HVAC systems. This OEM double pole double throw relay provides precise mechanical switching of 125VAC 250VAC circuits, making it an essential component for interlocking cooling and heating stages or managing safety circuit shutdowns. Rated for 10 Amp inductive loads, the RLY1873 ensures reliable