Antunes 8221210003 Model SML Air Pressure Switch 0.05-1" WC 1/8" NPT

The Antunes 8221210003 Model SML Air Pressure Switch is a sensitive, reliable control device designed to detect and respond to changes in air pressure in HVAC, boiler, and combustion control systems. This compact switch features a sensitive diaphragm that provides accurate pressure monitoring in the 0.05 to 1.0 inch water column (W.C.) range with a 1/8" NPT connection.

Key Features:

• Pressure range: 0.05" to 1.0" water column (1-25mm)
• Sensitive diaphragm design for accurate detection
• Snap-action SPDT electrical switch rated at 10 amps
• Automatic reset functionality
• 1/8" NPT threaded connection
• Maximum surge pressure: 20" W.C.
• Operating temperature range: -40°F to 170°F (-40°C to 77°C)
• UL, CSA, and FM approved for safety compliance

Electrical Ratings:

• 10A @ 125 VAC
• 8A @ 250 VAC
• 7A @ 277 VAC
• 1/8 HP @ 125 VAC, 1/4 HP @ 250 VAC
• Pilot duty: 125VA @ 125/277 VAC

The Model SML is engineered for easy installation and long-term reliability in demanding commercial and industrial applications. Its compact design and snap-action switching mechanism ensure consistent performance in boiler control systems, furnace applications, and other combustion equipment requiring precise low-pressure monitoring.