Carrier HN53TB031 Auxiliary Contact Switch 320788-703 ensuring optimal response times and

ensuring optimal response times and long-term diagnostic accuracy in light commercial and industrial environments

For contractors managing commercial HVAC systems

Vapor-Charged Sensing: The 20' sensing bulb is spot-sensitive

Direct OEM Fit: Designed as a drop-in HVAC replacement part for seamless integration with Williams wall heaters

Carrier HN53TB031 Auxiliary Contact Switch 320788-703 ensuring optimal response times andThe Carrier HN53TB031 Auxiliary Contact Switch is a critical field installable component designed for seamless integration with Carrier 30XA and 30XV chillers. This DPST (Double Pole Single Throw) switch provides reliable secondary signaling for HVAC control circuits, ensuring the automation system receives accurate feedback on contactor status. Engineered for high cycle industrial applications, the HN53TB031 mounts directly to the main power