Ashcroft A-Series Miniature Explosion Proof Pressure Switch


Key Features:

  • 316 Stainless Steel Body
  • Compact Size
  • 316 Stainless Steel Construction
  • Pressure ranges from Vacuum to 7,500 psi
  • Field Adjustable Set Point or Factory Set Only
  • Wide Operating Temperature Range (-40°C to 89°C)
  • Precision Snap Acting Micro Switch Element
  • SPDT or DPDT Switching
  • UL, CSA Listed Models
  • CRN Models Available
  • CE and ROHS Complaint
  • SIL 3 Capable
  • FM Approved
  • Dual Seal Rated
Product Options:

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The Ashcroft® A-Series miniature pressure switches are designed for tough applications where conventional designs often don't measure up. A rugged 316 SS enclosure gives uncompromising protection. Materials of construction have been selected for long life. Precision snap acting micro switches are featured and fully encased to prevent moisture from corroding switch contacts. The switch, depending on range, is either an all welded 316 stainless steel diaphragm sealed piston design or a direct acting piston design sealed with a Buna-N or Viton O-ring. Ideal for pressure alarm, shutdown, or control in hazardous areas and wherever size is a consideration or equipment is being downsized.

Setpoint:        Factory set or field adjustable
repeatability: ±2% of range
                       (Additional setpoint shift of ±2% of range per
                       40°F from initial setpoint set at 70°F typical)
Vibration:       Passed MIL-STD-202G
Shock:            75G’s 10 milliseconds 3 axis
Piston:           Stainless steel with Viton or Buna-N O-ring
life piston
design:          >1,000,000 operations typical
Diaphragm:   316L SS
life diaphragm
design:          >400,000 operations typical
material:       316L SS
rating:           NEMA 4X, 7, 9, IP 67
connection:   1⁄8 NPTF, 1⁄4 NPTF, 1⁄4 NPTM, 1⁄8 NPTM, 7/16-20 SAE
                      M, VCR, VCO, 3⁄4 Tri-Clamp®, 1.5 Tri-Clover®,
                      2.0 Tri-Clover® , G1⁄4 B, G1⁄4 A Type E Stub end
output:          SPDT, or DPDT 5A or 3A 120Vac, 2A @ 30 Vdc,
                      5A @ 28 Vac, gold contacts available
termination:  18 AWG wire leads, with 1⁄2 NPT conduit connection.


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Oil and gas industry

  • Offshore oil rigs
  • Oil & Gas Production
  • Oil Pipelines
  • Gas Transmission/Distribution Systems
  • Refineries (where 316 stainless steel construction and small size is desirable)
  • Chemical and petrochemical plants

  • Process Industries
  • Process Gas
  • Pumps, Compressors & Turbines (where small size and corrosion resistance construction is important)
  • Other special machinery and equipment applications

  • where small size and high performance are desirable
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