Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
⌕
RFQ CartGet a QuoteSign inSign up
Dwyer Differential Pressure Switch: Adj, Auto Reset, 0 in wc to 45 in wc, NEMA-3 Enclosure - Hazardous Location Adjustable Set-Point Air Pressure Switches
DwyerHazardous Location Adjustable Set-Point Air Pressure Switches

Dwyer Differential Pressure Switch: Adj, Auto Reset, 0 in wc to 45 in wc, NEMA-3 Enclosure

The Dwyer 1950-1-2F is a hazardous location adjustable set-point air pressure switch with an auto reset function. It features a differential pressure range of 0 in wc to 45 in wc, a NEMA-3 enclosure, and a SPDT…

SKU 3G-OTH-68118

Brand
Dwyer
Item
Differential Pressure Switch: Adj, Auto Reset, 0 in wc to 45 in wc, NEMA-3 Enclosure
Category
Hazardous Location Adjustable Set-Point Air Pressure Switches
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

Dwyer
Manufacturer Part Number
1950-1-2F
Type
Auto Reset, 0 in wc to 45 in wc, NEMA-3 Enclosure, SPDT, NPT
Switch Voltage
480V AC
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The Dwyer 1950-1-2F is a hazardous location adjustable set-point air pressure switch with an auto reset function. It features a differential pressure range of 0 in wc to 45 in wc, a NEMA-3 enclosure, and a SPDT switch rated at 480V AC. This model uses an NPT connection and is designed for use in hazardous environments.

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 hazardous location 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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
Pressure Switch: Adj, Auto Reset, 0.15 in wc to 0.5 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-0). Key specifications ��— Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-0; Brand: DWYER.
Dwyer
Pressure Switch: Adj, Auto Reset, 0.15 in wc to 0.5 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-0). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-0; Brand: DWYER.
Dwyer
Dwyer
Pressure Switch: Adj, Auto Reset, 5 in wc to 44 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-40). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-40; Brand: DWYER.
Pressure Switch: Adj, Auto Reset, 0.07 in wc to 0.22 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-00). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-00; Brand: DWYER.
Dwyer
Pressure Switch: Adj, Auto Reset, 0.07 in wc to 0.22 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-00). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-00; Brand: DWYER.
Dwyer
Dwyer
Pressure Switch: Adj, Auto Reset, 9 in wc to 85 in wc, Conduit Box, SPDT, NPT, 120 to 480V AC (MPN 1823-80). Key specifications — Switch Voltage: 120 to 480V AC; Manufacturer Part Number: 1823-80; Brand: DWYER.

More from Dwyer

View all Dwyer parts →
Dwyer
Dwyer
Differential Pressure Switch: Adj, 0.5 psid to 2 psid, Std Housing, SPDT, NPT, 1/8 in NPT (MPN 1950P-2-2F). Key specifications — Switch Voltage: 250V AC; Manufacturer Part Number: 1950P-2-2F; Brand: DWYER.
Pressure Switch 1950-0-2F, 15: Adj, 0.15 in wc to 0.5 in wc, NEMA-3 Enclosure, SPDT, NPT, 1/8 in NPT. Key specifications — Manufacturer Part Number: 1950-0-2F; Brand: DWYER.
Dwyer
Pressure Switch 1950-0-2F, 15: Adj, 0.15 in wc to 0.5 in wc, NEMA-3 Enclosure, SPDT, NPT, 1/8 in NPT. Key specifications — Manufacturer Part Number: 1950-0-2F; Brand: DWYER.
Pressure Switch: Adj, 0.07 in wc to 0.15 in wc, NEMA-3 Enclosure, SPDT, NPT, 1/8 in NPT (MPN 1950-00-2F). Key specifications — Manufacturer Part Number: 1950-00-2F; Brand: DWYER.
Dwyer
Pressure Switch: Adj, 0.07 in wc to 0.15 in wc, NEMA-3 Enclosure, SPDT, NPT, 1/8 in NPT (MPN 1950-00-2F). Key specifications — Manufacturer Part Number: 1950-00-2F; Brand: DWYER.
Dwyer
Dwyer
Differential Pressure Switch: Adj, 0.07 in wc to 0.15 in wc, NEMA-3 Enclosure, SPDT, NPT, 24V DC (MPN 1950G-00-B-24-NA). Key specifications — Switch Voltage: 24V DC; Manufacturer Part Number: 1950G-00-B-24-NA; Brand: DWYER.
Dwyer
Dwyer
Differential Pressure Switch: Adj, 3 psid to 15 psid, Std Housing, SPDT, NPT, 1/8 in NPT (MPN 1950P-15-2F). Key specifications — Switch Voltage: 250V AC; Manufacturer Part Number: 1950P-15-2F; Brand: DWYER.
Differential Pressure Switch 1.4-5.5 w.c: Adj, Single Operation, 1.4 in wc to 5.5 in wc, SPDT, NPT (MPN 1950-5-2F). Key specifications — Reset Type: Single Operation; Manufacturer Part Number: 1950-5-2F; Brand: DWYER.
Dwyer
Differential Pressure Switch 1.4-5.5 w.c: Adj, Single Operation, 1.4 in wc to 5.5 in wc, SPDT, NPT (MPN 1950-5-2F). Key specifications — Reset Type: Single Operation; Manufacturer Part Number: 1950-5-2F; Brand: DWYER.
Differential Pressure Switch 3-11 In: Adj, Single Operation, 3 in wc to 11 in wc, NEMA-3 Enclosure (MPN 1950-10-2F). Key specifications — Reset Type: Single Operation; Manufacturer Part Number: 1950-10-2F; Brand: DWYER.
Dwyer
Differential Pressure Switch 3-11 In: Adj, Single Operation, 3 in wc to 11 in wc, NEMA-3 Enclosure (MPN 1950-10-2F). Key specifications — Reset Type: Single Operation; Manufacturer Part Number: 1950-10-2F; Brand: DWYER.
Series 1950 Explosion Proof Di: Adj, 4 in wc to 20 in wc, NEMA-3 Enclosure, SPDT, NPT, 1/8 in NPT (MPN 1950-20-2F). Key specifications — Manufacturer Part Number: 1950-20-2F; Brand: DWYER.
Dwyer
Series 1950 Explosion Proof Di: Adj, 4 in wc to 20 in wc, NEMA-3 Enclosure, SPDT, NPT, 1/8 in NPT (MPN 1950-20-2F). Key specifications — Manufacturer Part Number: 1950-20-2F; Brand: DWYER.