55 Series Type E55 L24HT-R25HT Temperature Switch

Brand: United Electric Controls Ltd

The E55 Series provides rugged, dependable temperature control for many applications. Available in single or dual output versions, with either an epoxy coated enclosure (designed to meet NEMA Type 4X) or skeleton construction, the E55 combines flexibility with compact size. 

It has been used in diverse applications such as food service appliances, oven control, and heat tracing.
Features
  • Single or Dual 15 A Switch Output
  • Panel or Surface Mount
  • External adjustment via reference dial
  • Heat Tracing Models
  • Skeleton or Enclosure construction
  • Designed to meet NEMA Type 4X
  • Optional External Manual Reset
  • Compact size
  • Copper or Stainless Steel Bulb & Capillary
  • Adjustable Ranges:
    • -90° to 343.3° C (-130° to 650° F)

Specifications

Adjustment Type

  • Knob

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

  • Food Service Appliances
  • Heat Tracing
  • Oven Control

Approvals & Certifications

  • CE
  • CSA C22.2 No. 24, File # LR7814
  • ISO 9001
  • Low Voltage Directive (LVD) 2006/95/EC
  • UL 873, File # E10667
  • UR

Bulb Material

  • Copper
  • Stainless Steel

Capillary Length

  • 10 feet (3 metres)

Deadband

  • Temperature Deadband: Typically 1 % of Range Under Laboratory Conditions (21.11° C (70° F) Circulating Bath at Rate of -17.5° C (0.5° F) Per Minute Change)

Electrical Connectors

  • 1/2” NPT Female

Electrical Contacts

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

Electrical Rating

  • 20 A 125/250/480 Vac Resistive
  • Close Deadband, 5 A at 125/250 Vac Resistive
  • External Manual Reset, 15 A at 125/250/480 Vac Resistive

Enclosure, Body Details

  • Skeleton, Open Frame Construction

Enclosure, Body Material

  • Die Cast Aluminum
  • Epoxy Powder-Coated with Stainless Steel
  • Gasketed Adjustment Cover

Environmental Protection

  • IP66
  • NEMA 4X

Fill Material

  • Temperature Fill: Non-Toxic Oil

Mounting

  • Panel
  • Surface

Name Plate, Tag Material

  • Stainless Steel, Paper ID Tag & Wire Attachment

NPT Connection

  • 1/2” NPT Female
  • 3/4” NPT

Output Function

  • Normally Closed
  • Normally Open

Process Connection Material

  • 304 Stainless Steel
  • Brass

Repeatability

  • Set Point Repeatability: ± 1 % of Adjustable Range

Set Point - Decreasing

  • -90° to 343.3° C (-130° to 650° F)

Set Point - Increasing

  • -90° to 343.3° C (-130° to 650° F)

Shock

  • Set Point Repeats after 15 G, 10 millisecond Duration

Storage Temperature

  • -54° to 71° C (-65° to 160° F)

Switch Type

  • Dual Switch may be separated up to 100 % of Range
  • One or Two SPDT

Temperature Range

  • Maximum

Thermowell

  • 316 Stainless Steel
  • Brass

Vibration

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