P32 Series

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P32 Series

Differential Pressure Switch P32 Series

Differential Pressure Switch


The P32 Series Differential Pressure Switch is used to detect differential pressure or low positive gauge pressure in Building Automation Systems, BAS. Detection is achieved by using only the high pressure connection and leaving the low pressure connector open. It is also a vacuum detector, detecting vacuum by using only the low pressure connection and leaving the high pressure connector open to ambient pressure. The differential pressure switches are factory set at the bottom of their operating range with the diaphragm in a vertical plane. The setting will change if mounted in other positions. The P32AF has a close differential, and the P32AC has a standard differential.


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QtyModelDescriptionIn StockList PriceInternet Price
P32AC-1C DIFF PRESS SW, ADJUST, 0.15-12.00" WCIn Stock225.00126.00
P32AC-2C DIFF PRESS SW, ADJUST, 0.05-5.00" WCIn Stock257.92144.44
P32AF-1C DIFF PRESS SW, ADJUST, 0.05-5.00" WCIn Stock182.00101.92
P32AF-2C DIFF PRESS SW, ADJUST, 0.05-5.00" WCIn Stock247.00138.32


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  • Easy-to-read setpoint scale
  • Versatile mounting options
  • Durable construction
  • Setpoint switching repeatability
  • One-year warranty

Relay Type : SPDT (R=Com, B=NC, Y=NO) R to Y on DP increase

Relay Rating: 10 A resistive, 120-277, (AC only)

Setpoint : Screw adjustment in 2 ranges

Differential Progressive: by Setpoint from 0.025″ to 0.6″ WC

Repeatability: ±10% over full range

Reset Automatic: reset by differential

Visual Indication: Internal setpoint scale

Sensor Type: Buna-N Diaphragm

Operating Pressure Range: Range dependant on unit ordered

Overpressure: (Burst) 27.7″WC (6.89 kPa)

Max Operating Pressure :(Proof) 12″ WC (2.99 kPa)

Operating Temperature :-40° to 165℉ (-40 to 75℃)

Operating Humidity: 10 to 90% Non-condensing

Wetted Parts :Buna-N

Media Compatibility :Inert dry air

Process Connection: 1/8″ FNPT and 1/2″ NPSM fitting

Wiring Terminations :3 Screw terminals, (R=Com, B=NC, Y=NO),<12 AWG

Mounting: Vertical w/ 2- keyhole bracket 0.31 (.8cm)

 : ″U″ BKT or ″L″ BKT per order

Enclosure Rating :Zink-plated steel and polycarbonate, NEMA 1

Dimensions : 3.24″w x 5.56″ h x 2.16 d, (8.2 x 14.1 x 5.5 cm)

Weight: 1.0 lb (0.45 Kg)

Approvals: UL File # MH10588

Warranty: 1 year


Download Additional Data

document   Catalog Page
document   Installation Manual
document   P32 Data Sheet