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55 Series Type E55 Models E20BC to L24HT Temperature Switch
Brand: United Electric Controls LtdThe 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
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
- Low Voltage Directive (LVD) 2006/95/EC
- UL (C,US) 873
- UR
Approvals & Certifications
- ISO 9001
Bulb Material
- Copper
- Stainless Steel
Capillary Length
- Model R25HT - 10 feet (3 metres)
- Models E20BC to E23BC & E20BS to E23BS - 6 feet (2 metres)
Capillary Material
- Copper
- Stainless Steel
Deadband
- Temperature Deadband: Typically 1 % of Range Under Laboratory Conditions (21.11° C (70° F) Circulating Bath at Rate of 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
- 1 A at 125 Vac Resistive
- 20 A 125/250/480 Vac Resistive
- 22 A 480 Vac for R25HT & L24HT Heat Trace Models
- Close Deadband, 5 A at 125/250 Vac Resistive
- External Manual Reset, 15 A at 125/250/480 Vac Resistive
Enclosure, Body Material
- Epoxy Powder-Coated with Stainless Steel
- Gasketed Die Cast Aluminum
Environmental Protection
- IP66
- NEMA 4X
Fill Material
- Temperature Fill: Non-Toxic Oil
Materials of Construction
- Thermowell: 316 Stainless Steel
- Union Connector & Thermowell: Brass
- Union Connector: 304 Stainless Steel
Mounting
- Panel
- Surface
Name Plate, Tag Material
- Stainless Steel, Paper ID Tag & Wire Attachment
NPT Connection
- 1/2” NPT Female
- 3/4” NPT
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
- SPDT
Temperature Range
- Maximum
Vibration
- Set Point Repeats after 2.5 G, 5 to 500 Hz