Cleveland Controls NS2-1176-00 Pressure Switch

The Cleveland Controls NS2-1176-00 Pressure Switch is a high-precision differential air pressure switch designed for critical monitoring in residential and light commercial HVAC systems. This NS2 Series component excels at sensing positive, negative, or differential pressure, ensuring the safety and efficiency of furnaces, air handlers, and ventilation equipment. Engineered with a glass-filled polycarbonate body and a resilient silicone diaphragm, it provides a narrow switching differential and low set point tolerance, maintaining stable performance across a broad operating temperature range of -40°F to 190°F.

For the field technician, the NS2-1176-00 features color-coded ports (black for positive, gray for negative) to simplify HVAC pressure switch installation and prevent plumbing errors. The unit is equipped with 1/4 inch quick-connect terminals and integral slip-on connectors that accept 3/16 inch ID flexible tubing. Whether utilized as a furnace draft inducer switch or for air filter monitoring, this switch provides the reliable electrical signaling required to control compressors, fans, and safety limit circuits.

Key Benefits:

• Precision Sensing: Features a factory-calibrated set point (0.05" to 10.0" wc range) for accurate differential pressure detection.
• Rugged Construction: The glass-filled polycarbonate housing and silicone diaphragm resist degradation from combustion by-products.
• Technical Compatibility: Rated for up to 277V AC with fine silver SPDT contacts, suitable for pilot duty and resistive loads.
• Streamlined Installation: Compact footprint with 90-degree male terminals allows for easy integration into tight HVAC control cabinets.
• Operational Stability: Designed for an operational life of 250,000 cycles minimum, ensuring long-term system safety and reliability.

Common Questions:

How do I identify the high and low pressure ports?
The NS2-1176-00 uses a color-coded system. The Black port is for High/Positive (P1) pressure, and the Gray port is for Low/Negative (P2) pressure.

What is the maximum pressure rating for this switch?
The maximum burst pressure or surge pressure that the silicone diaphragm can withstand without damage is typically 14" wc.

Can this switch be used in both heating and cooling applications?
Yes, as a universal air pressure switch within its range, it is suitable for furnace combustion monitoring, clogged filter detection, and fan proving in air conditioning systems.

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.