Broad Compatibility: Supports various equipment lines including Lennox gas furnaces

which allows technicians to safely isolate downstream circuits during maintenance without disrupting the primary line voltage

and high-capacity gas equipment

High-Temperature Protection: Triggers a shut-down at 240°F to prevent heat exchanger overheating

Key Benefits: OEM Precision: Guaranteed compatibility with ASCO 310-421-HW specifications for a perfect internal fit

Carrier HN53TB031 Auxiliary Contact Switch 323269-701 Broad Compatibility: Supports various equipmentThe 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