Trane RLY3148 Start Relay The intake holes must face

The intake holes must face directly into the airflow

Its rejection-style design ensures compatibility with standard Class R fuse blocks

These figures represent the temperature differential

This assembly is optimized for Building Automation Systems (BAS) and commercial HVACR environments where HVAC valve control must remain consistent under high static pressures

With a service rating of 250 psig saturated steam and up to 400 psig at 100°F

Trane RLY3148 Start Relay The intake holes must faceThe Trane RLY3148 Start Relay is a high capacity potential relay engineered for heavy duty HVAC applications. Rated for 383V and 50A, this single phase component is critical for managing the initial inrush current during compressor start up. By temporarily engaging the start winding and disengaging once the motor reaches sufficient back EMF, it protects the compressor from electrical stress and reduces the risk of locked rotor amps (LRA). This OEM