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CLEVELAND CONTROLS Air Pressure Switch: Fixed, Auto Reset, 0.05 in wc, Open Mounted, SPDT - Fixed Set-Point Air Pressure Switches
CLEVELAND CONTROLSFixed Set-Point Air Pressure Switches

CLEVELAND CONTROLS Air Pressure Switch: Fixed, Auto Reset, 0.05 in wc, Open Mounted, SPDT

The CLEVELAND CONTROLS DFS-448-112 is a fixed set-point air pressure switch with an auto reset, SPDT switching action, and a barb connection. It is open mounted and operates at a switch voltage of 277V AC, with a set…

SKU 3G-OTH-69186

Also listed as: DFS448112 · DFS 448 112

Brand
CLEVELAND CONTROLS
Item
Air Pressure Switch: Fixed, Auto Reset, 0.05 in wc, Open Mounted, SPDT
Category
Fixed Set-Point Air Pressure Switches
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Technical Specifications

CLEVELAND CONTROLS
Manufacturer Part Number
DFS-448-112
Type
Auto Reset, 0.05 in wc, Open Mounted, SPDT, Barb
AC
277V
Switch Voltage
277V AC

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CLEVELAND CONTROLS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The CLEVELAND CONTROLS DFS-448-112 is a fixed set-point air pressure switch with an auto reset, SPDT switching action, and a barb connection. It is open mounted and operates at a switch voltage of 277V AC, with a set point of 0.05 in wc.

Frequently Asked Questions

What is the CLEVELAND CONTROLS DFS-448-112 air pressure switch used for?

The DFS-448-112 is a fixed set-point air pressure switch used in HVAC, combustion, and industrial air-handling systems to sense low differential pressure (0.05 in wc) and switch electrical circuits at 277V AC. It is commonly applied for filter monitoring, duct pressure control, and burner safety interlocks.

What are the specifications of the CLEVELAND CONTROLS DFS-448-112?

The DFS-448-112 is a fixed set-point air pressure switch with auto reset, SPDT switching, and a barb connection. It is open mounted, operates at 277V AC, and has a set point of 0.05 in wc. The manufacturer part number is DFS-448-112 from CLEVELAND CONTROLS.

Where to buy the CLEVELAND CONTROLS DFS-448-112 worldwide?

3G Electric supplies the CLEVELAND CONTROLS DFS-448-112 air pressure switch to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this fixed set-point, auto reset SPDT switch with 277V AC rating.

How to install a fixed set-point air pressure switch like the DFS-448-112?

Mount the switch in a clean, dry location with the barb connection oriented downward to prevent moisture ingress. Connect the pressure line to the barb and wire the SPDT contacts per the 277V AC circuit. Verify the set point of 0.05 in wc with a manometer before commissioning.

Used in

Common applications for CLEVELAND CONTROLS
HVAC duct static pressure monitoring — Cleveland Controls static pressure probes (e.g., model 21118) used in air handling units
Burner draft pressure control — Cleveland Controls adjustable set-point switches (e.g., AFS-A) for combustion air proving
Industrial process air flow measurement — Cleveland Controls total pressure probes (e.g., model 21123) in ventilation systems
Building automation system pressure sensing — Cleveland Controls switches (e.g., RFS-4150) for filter clog detection
Exhaust fan interlock — Cleveland Controls pressure switches (e.g., AFS-222-112) for proving fan operation

CLEVELAND CONTROLS Products

3G Electric supplies CLEVELAND CONTROLS fixed set-point air pressure switches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 12 in wc, Open Mounted, SPDT, Barb, 277V AC (MPN AFS-298-112-147)
CLEVELAND CONTROLS
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 12 in wc, Open Mounted, SPDT, Barb, 277V AC (MPN AFS-298-112-147)
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 2 in wc, Open Mounted, SPDT, Barb, 277V AC (MPN AFS-275-112)
CLEVELAND CONTROLS
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 2 in wc, Open Mounted, SPDT, Barb, 277V AC (MPN AFS-275-112)
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 12 in wc, Open Mounted, SPDT, Push-On, 277V AC (MPN AFS-298)
CLEVELAND CONTROLS
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 12 in wc, Open Mounted, SPDT, Push-On, 277V AC (MPN AFS-298)
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 12 in wc, Open Mounted, SPDT, 115 to 277V AC (MPN AFS-227-161)
CLEVELAND CONTROLS
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 12 in wc, Open Mounted, SPDT, 115 to 277V AC (MPN AFS-227-161)
Air Pressure Switch: Adj, Auto Reset, 0.03 in wc to 12 in wc, Open Mounted, SPDT, Barb (MPN AFS-298-112)
CLEVELAND CONTROLS
Air Pressure Switch: Adj, Auto Reset, 0.03 in wc to 12 in wc, Open Mounted, SPDT, Barb (MPN AFS-298-112)
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 12 in wc, Open Mounted, SPDT, 277V AC (MPN AFS-228)
CLEVELAND CONTROLS
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 12 in wc, Open Mounted, SPDT, 277V AC (MPN AFS-228)

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