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

Proof Pressure

  • 250 psig

Electrical Rating

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

Adjustment Type

  • Field Adjustable

Ambient Temperature

  • -20° to 60° C (-4° to 140° F)

Process Temperature

  • -20° to 82° C (-4° to 180° F)

Switch Type

  • SPDT

Process Connection

  • Standard: 1/8” NPT Ext, 1/8” NPT Int, 1/4” NPT Ext.
  • Optional: 1/4” NPT Int (eighth digit “3”)

Wetted Materials

  • Standard Brass & Buna "N"
  • Optional Process Connections: 316 SS, Carbon steel
  • Optional Diaphragms: Viton, Neoprene, Ethylene propylene, Fluorosilicone

Approvals & Certifications

  • CSA
  • UL

Documentation

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