Robertshaw 2374-510 Pressure Switch

The Robertshaw 2374-510 is a heavy-duty universal air pressure switch designed for technicians who need a reliable, field-adjustable solution for furnace draft proving and combustion air monitoring. Engineered with a broad set point range of 0.10" to 10.0" WC, this switch eliminates the need to carry dozens of fixed-setting OEM controls. It features SPDT silver contacts rated for 1/10 HP at 120-277V AC, ensuring stable electrical switching even in high-cycle HVAC air pressure sensing applications. This unit is built to withstand extreme mechanical room environments with an operating temperature range of -40°F to 190°F. Whether you are troubleshooting a rooftop unit or a residential high-efficiency furnace, the included calibration springs and orifice flow options provide the precise differential pressure control required for safe system sequencing. For restricted access points, the terminal layout and optional probe compatibility simplify HVAC pressure switch replacement and remote mounting configurations.

Technical Benefits for Professionals:

• Universal Field Adjustability: Replaces common pressure switches from Lennox, York, Carrier, and Goodman with a 0.10" to 10.0" WC adjustable range.
• High Compatibility: Consolidates inventory by replacing multiple part numbers including 57J01, SWT1255, 1005252, and BM-7057.
• Industrial Grade Construction: Features silver electrical contacts to prevent pitting and ensure long-term draft inducer switch reliability.
• Versatile Mounting: Designed for combustion air applications with options for remote probe installation in tight furnace cabinets.
• Broad Electrical Rating: Supports 24V, 120V, and 277V AC circuits, making it suitable for both residential and commercial furnace pressure switch troubleshooting.

Common Questions:

How do I calibrate the set point for a specific furnace model?
Use a digital manometer to monitor the pressure at the inducer port. Adjust the 2374-510 using the provided calibration springs until the switch closes at the manufacturer's specified "inches of water column" rating.

Can this replace a two-wire SPST switch?
Yes. This unit features SPDT/SPST terminals. For SPST (Single Pole Single Throw) applications, simply utilize the Normally Open (NO) and Common (C) terminals, leaving the Normally Closed (NC) terminal unused.

Is this compatible with condensing furnaces?
Yes, as long as the negative pressure switch requirements fall within the 0.10" to 10.0" WC range. Ensure you verify the mounting orientation to prevent moisture buildup in the diaphragm.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

2374-510 is the cross of NS2-0000-08