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Dwyer AAFS Airflow Switch, SPDT, 250V AC, 15A, ABS Housing - Airflow Switches
DwyerAirflow Switches

Dwyer AAFS Airflow Switch, SPDT, 250V AC, 15A, ABS Housing

The Dwyer Air Flow Switch (MPN AAFS) is an SPDT airflow switch rated for 250V AC and 15 A, with a maximum airflow of 1,800 fpm and a minimum of 200 fpm in horizontal orientation. It features an ABS housing and is…

SKU 3G-OTH-69266

Brand
Dwyer
Item
AAFS Airflow Switch, SPDT, 250V AC, 15A, ABS Housing
Category
Airflow 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

Dwyer
Manufacturer Part Number
AAFS
Contact Form
SPDT
Input Voltage
250V AC
Housing Material
ABS

Technical Documents

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

Product Description

The Dwyer Air Flow Switch (MPN AAFS) is an SPDT airflow switch rated for 250V AC and 15 A, with a maximum airflow of 1,800 fpm and a minimum of 200 fpm in horizontal orientation. It features an ABS housing and is designed for use in industrial air-handling systems.

Frequently Asked Questions

What is the Dwyer AAFS air flow switch used for?

The Dwyer AAFS air flow switch detects airflow presence or loss in industrial air-handling systems. It is commonly used in HVAC ducts, exhaust systems, and ventilation safety interlocks to prove airflow before enabling burners or fans.

What are the specifications of the Dwyer AAFS air flow switch?

The Dwyer AAFS is an SPDT switch rated for 250V AC and 15 A. It senses airflow from 200 fpm (horizontal) up to 1,800 fpm maximum. The housing is made of ABS plastic. It is designed for industrial air-handling applications.

Where to buy the Dwyer AAFS air flow switch worldwide?

3G Electric supplies the Dwyer AAFS air flow switch to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this SPDT airflow switch.

How to install the Dwyer AAFS air flow switch?

Mount the Dwyer AAFS in a horizontal duct section with the airflow arrow pointing in the flow direction. Wire the SPDT contacts per your control circuit (250V AC max, 15 A). Adjust the setpoint to the minimum required fpm. Test operation before final commissioning.

Used in

Common applications for Dwyer
Combustion air-filter monitoring — Magnehelic Series 2000 on burner air-intake filter banks
Clean-room and pharmaceutical pressurisation — Magnehelic / Capsuhelic differential-pressure gauges
HVAC fan-discharge static pressure — Mark II inclined-vertical manometers on AHU test points
Filter-blockage alarms — Photohelic Series 3000 combined gauge/switch on air-handling units
BMS-integrated pressure monitoring — Digihelic DH3 with 4–20 mA output for building management

Dwyer Products

3G Electric supplies Dwyer airflow switches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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The Dwyer AVFS-2 is a single-pole single-throw (SPST) air flow switch rated for 30V DC/250V AC at 3 A. It detects airflow from 197 fpm (horizontal minimum) to 1,969 fpm maximum. The PBT housing with NEMA 4X rating provides corrosion resistance. Typical applications include monitoring airflow in ducts or enclosures to prove fan operation or detect filter blockage in HVAC and ventilation systems
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The Dwyer AVFS-2 is a single-pole single-throw (SPST) air flow switch rated for 30V DC/250V AC at 3 A. It detects airflow from 197 fpm (horizontal minimum) to 1,969 fpm maximum. The PBT housing with NEMA 4X rating provides corrosion resistance. Typical applications include monitoring airflow in ducts or enclosures to prove fan operation or detect filter blockage in HVAC and ventilation systems
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