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CLEVELAND CONTROLS Air Pressure Switch: Adj, Auto Reset, 0.03 in wc to 2 in wc, Conduit Box - Adjustable Set-Point Air Pressure Switches
CLEVELAND CONTROLSAdjustable Set-Point Air Pressure Switches

CLEVELAND CONTROLS Air Pressure Switch: Adj, Auto Reset, 0.03 in wc to 2 in wc, Conduit Box

The CLEVELAND CONTROLS AFS-398 is an adjustable set-point air pressure switch with auto reset, designed for sensing differential pressure from 0.03 in wc to 2 in wc. It features a single-pole double-throw (SPDT)…

SKU 3G-OTH-68445

Also listed as: AFS398 · AFS 398

Brand
CLEVELAND CONTROLS
Item
Air Pressure Switch: Adj, Auto Reset, 0.03 in wc to 2 in wc, Conduit Box
Category
Adjustable Set-Point Air Pressure Switches
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

CLEVELAND CONTROLS
Manufacturer Part Number
AFS-398
Type
Auto Reset, 0.03 in wc to 2 in wc, Conduit Box, SPDT, Integral Compression
Switch Voltage
277V AC

Technical Documents

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

Product Description

The CLEVELAND CONTROLS AFS-398 is an adjustable set-point air pressure switch with auto reset, designed for sensing differential pressure from 0.03 in wc to 2 in wc. It features a single-pole double-throw (SPDT) switching action and a switch voltage rating of 277V AC. The unit is housed in a conduit box with an integral compression connection, making it suitable for industrial air pressure monitoring applications.

Frequently Asked Questions

What is the CLEVELAND CONTROLS AFS-398 air pressure switch used for?

The CLEVELAND CONTROLS AFS-398 is used for sensing and monitoring differential air pressure in industrial HVAC, ventilation, and air-handling systems. It provides automatic reset switching at adjustable set points from 0.03 in wc to 2 in wc, making it suitable for filter monitoring, duct pressure control, and airflow verification.

What are the specifications of the CLEVELAND CONTROLS AFS-398?

The AFS-398 is an adjustable set-point air pressure switch with auto reset. It has a differential pressure range of 0.03 in wc to 2 in wc, SPDT switching action, and a switch voltage rating of 277V AC. It is housed in a conduit box with an integral compression connection for industrial use.

Where to buy the CLEVELAND CONTROLS AFS-398 worldwide?

You can source the CLEVELAND CONTROLS AFS-398 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine CLEVELAND CONTROLS components for industrial applications.

How to install the CLEVELAND CONTROLS AFS-398 air pressure switch?

Mount the AFS-398 in a clean, dry location with the diaphragm in a vertical plane to avoid moisture accumulation. Connect the high-pressure port to the higher-pressure side and the low-pressure port to the lower-pressure side. Wire the SPDT contacts per your control circuit, ensuring the 277V AC rating is not exceeded. Adjust the set point using the screw mechanism.

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 adjustable 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 2 in wc, Conduit Box, SPDT, Integral Compression (MPN AFS-262)
CLEVELAND CONTROLS
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 2 in wc, Conduit Box, SPDT, Integral Compression (MPN AFS-262)
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 2 in wc, Conduit Box, SPDT, Integral Compression (MPN AFS-262-121)
CLEVELAND CONTROLS
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 2 in wc, Conduit Box, SPDT, Integral Compression (MPN AFS-262-121)
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 12 in wc, Conduit Box, SPDT, NPT, 277V AC (MPN AFS-145)
CLEVELAND CONTROLS
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 12 in wc, Conduit Box, SPDT, NPT, 277V AC (MPN AFS-145)
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 12 in wc, Conduit Box, SPDT, NPT, 277V AC (MPN AFS-A)
CLEVELAND CONTROLS
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 12 in wc, Conduit Box, SPDT, NPT, 277V AC (MPN AFS-A)
Air Pressure Switch: Adj, Auto Reset, 0.03 in wc to 12 in wc, Conduit Box, SPDT, Barb (MPN AFS-405-112)
CLEVELAND CONTROLS
Air Pressure Switch: Adj, Auto Reset, 0.03 in wc to 12 in wc, Conduit Box, SPDT, Barb (MPN AFS-405-112)
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 12 in wc, Conduit Box, SPDT, Barb, 277V AC (MPN AFS-222-112)
CLEVELAND CONTROLS
Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 12 in wc, Conduit Box, SPDT, Barb, 277V AC (MPN AFS-222-112)

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Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 12 in wc, Conduit Box, SPDT, NPT, 277V AC (MPN AFS-A-173)
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Air Pressure Switch: Adj, Auto Reset, 0.05 in wc to 2 in wc, Open Mounted, SPDT, 277V AC (MPN AFS-271)
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