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Switzer Pressure Switches

Pressure switch is an electromechanical device that senses changes in pressure and provides electrical contact closures at predetermined pressure values. It is designed to open or close the contact depending on rising or falling application.

Pressure Switch may be used to energize an alarm or may directly control the process by cycling pumps, shifting valves etc.  In an alarm application, the switch protects valuable equipment by signalling an alarm.  In direct control application, the switch can be linked electrically to other equipment.

Technical Specifications:


Air, Water, Steam, Oil & Gas

Pressure Ranges

Vacuum, 2.5 mbar to 400 mbar & 1 bar to 700 bar

Sensing Element

Bellows or Diaphragm (PTFE/ Neoprene/ SS 316L/ Monel) or Piston

Wetted Parts

Brass/SS 304/SS 316

Differential (Dead Band)

Adjustable or Fixed


Dust Proof (IP 40), Weatherproof (IP 54 / IP 65 / IP66 / IP 68), Flameproof


+/- 1% of full span

Scale Accuracy

+/- 3% of full span

Type of Micro Switches

1 x SPDT or 2 x SPDT (single pole double throw)

Media Temp

-50 to +150 C (For higher temperature; available on request)


Bottom/ Panel/ 2” pipe mounting

Switzer Pressure Switches Series 900 (GH-901, GH-902, GH-903)

Switzer Pressure Switches Series 900 (GH-901, GH-902, GH-903)

Product Price: Rs 6,500 / NumberGet Best Price

Minimum Order Quantity: 50 Number

Product Brochure

Product Details:
Usage/ApplicationHigh Repeatability,Spring Opposed,Bellows,Compact Tamper Proof Set Point Adjustment
Range SettingVacuum To 35 Bar,Several Standard Ranges. Refer Ordering Matrix (Note 2 & 3)
Contact System TypeSPDT
IP Rating15A,250V AC
Model Name/NumberGH-901-1-V-3,GH-901,GH-902,GH-903
Process Temperature110 DegreeC For Phosphor Bronze Temperature Bellows,170 Degreec For SS Bellows (Note 7)
Pressure SwitchesCompact Version In Switzer Series 900 Pressure Switches
AccuracySPDT Switch (Notes 4 & 5) Fixed Within 6% Narrowband Adjustable 6 To 20% Wideband Adjustable : 1
Country of OriginMade in India

This compact version in Switzer series 900 Pressure Switches using components of high reliability is specifically designed for OEMs.

The sensing element is a hydraulically formed seamless Phosphor Bronze or Stainless Steel Bellows mounted external to the weatherproof switch housing.

- Models 901, 902 & 903
- Phosphor Bronze / 316 LSS Bellows
- Range (-)1~0 to 15~75 bar
- Max. Working Pr. Up to 80 bar
- Repeatability 0.5% FSR(1.0% FSR for 281)
- Fixed or adjustable On-Off differential
- Independent High - Low set points ( Model 281 only)
- Weatherproof and Flameproof Pr Die Cast Aluminium or weatherproof Investment Cast SS enclosure
- Instrument quality snap acting SPCO micro switch.One or Two as required

Additional Information:

  • Item Code: GH-901
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