A-Series Watertight Pressure Switch

Part #: APAN41H00MHS0260#-42R


Ashcroft A-Series Watertight Pressure Switch, Fixed Dead Band, Factory Set, Field Adjustable, 316SS Body, Single Higher Current Micro Switch – SPDT, 5A@125/250 VAC, 5A@28VDC Resistive, 3A@28VDC Inductive, Micro DIN Connector DIN 43650 Form C Cable Socket, 316SS Welded Diaphragm Seal, 1/4″ MNPT Connection, 0-60PSI Range, Set-point ‘42PSI Rising’

SKU: 5657577a0304 Category:

The Ashcroft® APA and APS watertight miniature pressure switches are designed for pressure control in harsh applications. Its design allows easy integration into custom equipment or systems. This model is ideal for pressure alarm, shutdown or control where size or compatibility is a consideration.

Part #: APAN41H00MHS0260#-42R


  • 316L stainless steel enclosure
  • Pressure ranges from vacuum to 15,000 psi (1000 Bar)
  • Wide operating temperature -40°F to 212°F (-40°C to 100°C)
  • Factory set or field adjustable setpoint with Fixed deadband
  • Expanded selection of pressure and electrical connections
  • SIL 3 Capable
  • UL, CSA, CE, CRN and 3A approved
  • RoHS Compliant
  • Enclosure Material: 316L Stainless steel
  • Diaphragm/Actuator Material: 
    • 316L Stainless steel
    • Diaphragm or 316L stainless steel piston w/Viton or Buna-N O-ring
  • Setpoint: Single setpoint – Factory set or field adjustable
  • Setpoint Repeatability (Accuracy):
    • ±2% of span. For ranges 200 through 15,000 psi
    • +/- 5% of span for ranges -15/15 through 100 psi
    • (Additional +/- 2% of span setpoint shift per every 40°F above and below 70°F)

  • Ambient Temperature Range: -40°F to 257°F (-40°C to 125°C)
  • Pressure Connection:
      • 1.5˝ Tri-Clover®, 2.0˝ Tri-Clover, G¼ B, G¼ A Type E Stub end
      • ½ FNPT, 7⁄16-20 SAE M, VCR, VCO, ¾˝ Tri-Clamp®,
      • 1⁄8 NPTF, ¼ NPTF, ¼ NPTM, 1⁄8 NPTM, ½ MNPT
  • Pressure Ranges: Vacuum -15 to 15,000 psi
  • Enclosure Ratings: NEMA 6, IP67

The Ashcroft A-Series Watertight Pressure Switch is designed to be used in the process, industrial, medical, and life science markets for the following applications:

  • Offshore Oil Rigs
  • Chemical and Petrochemical Plants
  • Water and Wastewater Pressure Control
  • Pulp and Paper
  • Heavy Vehicle Hydraulic Braking
  • Specialized OEM Equipment
  • Autoclaves and Sterilizers