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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

Also listed as: 195012F · 1950 1 2F

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
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

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

Technical Documents

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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.

Frequently Asked Questions

What is the Dwyer 1950-1-2F differential pressure switch used for?

The Dwyer 1950-1-2F is used to monitor and control differential air pressure in hazardous locations. It triggers an SPDT switch at a set point between 0 and 45 in wc, making it suitable for ventilation, filtration, and process safety systems in industrial plants.

What are the specifications of the Dwyer 1950-1-2F?

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

Where to buy the Dwyer 1950-1-2F worldwide?

3G Electric supplies the Dwyer 1950-1-2F differential pressure 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 model.

How to install the Dwyer 1950-1-2F differential pressure switch?

Install the Dwyer 1950-1-2F in a dry, protected location using the NPT connection. Ensure the enclosure is properly sealed to maintain NEMA-3 integrity. Wire the SPDT contacts per the 480V AC rating and adjust the set point within the 0 to 45 in wc range.

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.

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Compatible alternatives & equivalents

Cross-referenced 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)
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