Cleveland Controls NS2-0504-00 Pressure Switch

The Cleveland Controls NS2-0504-00 Pressure Switch is a high-precision V-90 air pressure switch engineered for critical airflow monitoring in positive, negative, or differential pressure applications. As a direct NS2-0504-00 cross reference for the 440-518-000, this OEM component is essential for verifying inducer fan operation and venting integrity in furnaces, boilers, and commercial air handlers. Designed with a fixed set point, it ensures that the combustion process only initiates when safe pneumatic conditions are met, preventing equipment operation during flue blockages or mechanical failures. This Cleveland Controls air switch features a robust diaphragm and snap-acting SPDT electrical contacts, providing reliable pilot duty control for HVAC safety circuits and industrial ventilation systems. Its compact footprint and versatile mounting options make it a standard choice for technicians performing OEM HVAC part replacements in the field.

Key Benefits for Contractors

• Precise Airflow Detection: Ensures the pressure switch closes accurately to signal the control board for safe ignition sequences.
• Broad Compatibility: Functions as a drop-in replacement for specific Cleveland Controls NS2 series and cross-referenced 440-518-000 models.
• V-90 Technical Standards: Built to handle the rigorous duty cycles of industrial air-moving applications and high-efficiency heating equipment.
• Durable Construction: Engineered to withstand the temperature fluctuations and environmental demands of mechanical rooms.
• Safety Compliance: Vital for meeting code requirements regarding combustion air verification and exhaust monitoring.

Common Questions

What is the set point for the NS2-0504-00?
This specific model is calibrated to a fixed factory set point to match OEM specifications for the heating or ventilation unit it serves; always verify your specific equipment's requirements against the nameplate data.

Can I use this as a substitute for other NS2 series switches?
The NS2-0504-00 is an exact cross for the 440-518-000. While physically similar to other V-90 switches, the specific set point and contact configuration are critical for safe operation.

Is this switch suitable for positive pressure monitoring?
Yes, the Cleveland Controls V-90 series is designed to sense positive, negative, or differential pressure across the diaphragm depending on how the sensing lines are plumbed.

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.