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H-Series Miniature Pressure Switch

Brand: ASCO

H-Series miniature pressure switches have field adjustable set points and fixed deadband, with diaphragm/piston sensor.

They are available in open frame construction, Type 1 general-purpose or Type 4 watertight enclosures.

The resilient diaphragm/piston construction helps provide long life and maintains set point repeatability despite environmental temperature variations.

The full size electical switch is a precision UL listed, snap-action type. H-Series switches are CSA approved and are UL listed under “Industrial Control Equipment”.
Features
  • Field adjustable set points.
  • Fixed deadband.
  • Choice of open frame type, general purpose or watetight enclosure.
  • Small size.
  • Mounts in any position.
  • Rugged and vibration resistant, e.g., for compressors.
  • Visual adjustment scales in psig and bars

Specifications

Brand

Adjustment Type

  • Field Adjustable

Ambient Temperature Range

  • -20° to 60° C (-4° to 140° F)

Approvals & Certifications

  • CSA
  • UL

Deadband, Approximate

  • bar: 0.10 to 1.38
  • kPa: 10.3 to 137.9
  • psig: 1.5 to 20

Diaphragm Material

  • Buna-N
  • Ethylene Propylene (EPR)
  • Fluorosilicone
  • Neoprene
  • Viton

Electrical Connectors

  • 1/2” NPT
  • Terminal Strip - Internal

Electrical Contacts

  • Gold
  • Silver

Electrical Rating

  • 1/2 A at 125 Vdc
  • 1/4 A at 250 Vdc
  • 1/4 hp at 250 Vac
  • 1/8 hp at 125 Vac
  • 10 A at 250 Vac
  • 15 A at 125 Vac

NPT Connection

  • 1/4” NPT Female
  • 1/4” NPT Male
  • 1/8” NPT Female
  • 1/8” NPT Male

Process Connection Material

  • 316 Stainless Steel
  • Brass
  • Carbon Steel

Process Temperature

  • -20° to 82° C (-4° to 180° F)

Proof Pressure

  • bar: 17.24
  • kPa: 1,724
  • psig: 250

Set Point - Decreasing

  • bar: 0.27 to 13.78
  • kPa: 27.57 to 1,378
  • psig: 4 to 200

Set Point - Increasing

  • bar: 0.27 to 13.78
  • kPa: 27.57 to 1,378
  • psig: 4 to 200

Switch Type

  • SPDT

System Pressure

  • bar: 0.27 to 17.24
  • kPa: 27.57 to 1,724
  • psig: 4 to 250

Wetted Materials

  • 316 Stainless Steel
  • Brass
  • Carbon Steel

Documentation

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