Industrial pressure switch with grey body and black label.

H3A-2ST-DRAIN | Dwyer Instruments | Pressure Components

Differential Pressure Switch, Aluminum/Nitrile, 0.5 - 15 psid, SPDT Snap Switch, Terminal Block-UL/CSA Approved, Drain

Brand:Dwyer Instruments

MPN:H3A-2ST-DRAIN

SKU:H3A-2ST-DRAIN

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product datasheet

installation instructions

product specifications

Direction

Uni-Directional

Measurement

PSID

Media Compatibility

Liquid,Gas

Range

±50 psi

Connection Size

1/8 in

Type

Adjustable

Connection

NPT

Housing Material

Metallic

Contact Rating

5 A

Set Point Range

0.5 - 15 psid

Power Required

Switch

Contact Type

SPDT

Approvals

CE,CSA, UL

Supply Voltage (Nominal)

240 VAC

product series specifications

Wetted Materials: See pressure chamber and diaphragm material in model chart

Temperature Limit: -4 to 220°C (-20 to 104°F), ATEX: -20 to 90°C (-4 to 194°F)

Pressure Limit: 1500 psig (103 bar)

Enclosure Rating: See ratings chart

Switch Type: SPDT or DPDT snap switch

Electrical Rating: 5A @ 125/250 VAC (V~), 30 VDC (V ). MV option: 1A @ 125 VAC (V~); 1A res., .5A ind. @ 30 VDC (V )

Electrical Connections: See model chart

Conduit Connection: 3/4" female NPT

Process Connection: 1/8" female NPT

Mounting Orientation: Vertical

Set Point Adjustment: Internal screw

Weight: 4 lb, 2 oz (2 kg)

Deadband: Approximately 5% of range

product series features

One or two single pole
Set-points up to 200 psid
Suitable for hazardous locations
Weatherproof housings

more information & related documents

Series Description

The Dwyer H3 Series adjustable differential pressure switches actuate one or two single pole, double throw (SPDT) snap switches in response to increasing or decreasing pressure of compatible gases or liquids. Four field adjustable operating ranges are available allowing set-points up to 200 psid. All models are suitable for hazardous locations and also include weatherproof housings as detailed in the chart below. Read and understand instructions completely before proceeding with installation or operation.

Kele Description

DIFF PRESS SW, ADJUST, 0.5-15 PSID

Manufacturer

Dwyer Instruments