400 Series Type J403 Models 550 to 555 Pressure Switch

Brand: United Electric Controls Ltd
Does not ship to Virginia, United States

The 400 Series is a versatile family of vacuum, pressure, differential pressure and temperature switches for applications that require single or multiple switching capabilities.

Dual and triple switch versions provide multi-output for alarm and shutdown, pre-alarm and alarm, high/low limit or level staging functions.

A wide variety of microswitch and process connection options, along with a weather-tight enclosure, make the 400 Series an ideal choice for most ordinary location applications. Its worldwide use is assured with approvals and certifications to agency standards.

Widely used throughout the process industries, the 400 Series provides threshold protection and control for many critical functions.

Typical installations are found in industrial gas production, energy generation including pumps, turbines and compressors, pulp and paper, and water and wastewater treatment.
Features
  • Epoxy-coated enclosure designed to meet enclosure Type 4X 
  • Wide variety of pressure sensors and materials 
  • Setting via reference dial or hex screw adjustment 
  • FM Approved

Specifications

Adjustment Type

  • Captive Clamp Screws
  • Factory Set (Pre-Set)
  • Set Point Adjustment

Ambient Temperature Range

  • -40° to 71° C (-40° to 160° F), Set Point Typically Shifts less than 1 % of Range for a 28° C (50° F) Ambient Temperature Change

Applications

  • Energy Generation Including Pumps
  • Industrial Gas Production
  • Pulp & Paper
  • Turbines & Compressors
  • Water & Wastewater Treatment

Approvals & Certifications

  • ATEX Ex directive (94/9/EC) II 1 G Ex ia IIC T6 Ga Tamb: -50° to 60° C (-58° to 140° F)
  • CE
  • CSA C22.2 No. 14, File # E42272
  • FM Class 3545
  • GOST-R 51330.0, 51330.1, 51330.10 & 51330.14
  • Low Voltage Directive (LVD) 2006/95/EC
  • PED: 97/23/EC
  • UL (C,US) 508
  • UR

Approvals & Certifications

  • ISO 9001

Deadband

  • Inches Hg: 0.2 to 2
  • Inches WC: 3 to 7
  • psi: 0.1 to 1.5 (kPa: 0.68 to 10.3, Mbar: 6.8 to 103.4)

Diaphragm Material

  • Teflon

Electrical Connectors

  • 7/8” Hole to 1/2” NPT Female Watertight Conduit Fitting
  • One 3/4” NPT
  • Screw Terminal
  • Two 7/8” Diameter Knockouts

Electrical Contacts

  • Gold Contacts, 1 A at 125 Vac Resistive
  • Normally Closed
  • Normally Open

Electrical Rating

  • 1 A at 125 Vac Resistive
  • 10 A at 125 Vdc Resistive, Deadband & Min. Set Point Will Increase
  • 20 A, 125/250/480 Vac Resistive
  • Adjustable Deadband, External Manual Reset, High Ambient, 15 A at 125/250/480 Vac Resistive, Temperatures up to 145° C (250° F)
  • Close Deadband, 5 A at 125/250 Vac Resistive
  • Vapor Sealed, Fungus Resistant Case,15 A 125/250 Vac Resistive

Enclosure Finish

  • Epoxy Powder-Coated

Enclosure, Body Material

  • Gasketed Die Cast Aluminum

Environmental Protection

  • Intrinsically Safe
  • IP66
  • NEMA 4X
  • Weathertight

Indication

  • Single Red Status Light, 115 Vac

Mounting

  • Hole
  • Pipe
  • Surface

Name Plate, Tag Material

  • Stainless Steel, Paper ID Tag & Wire Attachment

NPT Connection

  • 1/4” NPT Female

O-Ring Material

  • Viton

Process Connection Material

  • 316L Stainless Steel

Proof Pressure

  • psi: 225 (kPa: 1,551, bar: 15.5)

Repeatability

  • Set Point Repeatability: ± 2 % of Full Scale

Service

  • Oxygen Service Cleaning, Alcohol Cleaning to Remove Residue from the Process Connection

Set Point - Decreasing

  • bar: -1 to 6.9
  • Inches Hg: -30 to 0
  • Inches WC: 0 to 80
  • kPa: -101.4 to 689.5
  • psi: -14.7 to 100

Set Point - Increasing

  • bar: -1 to 6.9
  • Inches Hg: -30 to 0
  • Inches WC: 0 to 80
  • kPa: -101.4 to 689.5
  • psi: -14.7 to 100

Shock

  • Set Point Repeats after 15 G, 10 millisecond Duration

Storage Temperature

  • -54° to 71° C (-65° to 160° F)

Switch Type

  • Three SPDT Switches

System Pressure

  • bar: 6.9
  • kPa: 6.89
  • psi: 100

Vibration

  • Set Point Repeats after 2.5 G, 5 to 500 Hz

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