Trane RLY3339 SPST Start Relay

The Trane RLY3339 SPST Start Relay is one of the valuable parts of HVAC equipment used to help start motors using the proper amount of power. This start relay has a length of 3.4” and comes with a coil voltage of 400 VAC and a current of 50 A. Originally designed for use on Trane air conditioning systems and heat pump models, this start relay optimizes system efficiency by establishing proper startup currents in the motor while protecting it from excessive usage which leads to more frequent breakdowns and shorter equipment duration. Its strong construction and high current carrying capability make the part a crucial element for sustaining HVAC performance.