West Coast Plastics Equipment, Inc.
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Fenwal Thermoswitch Controllers
Series 20000, 21000, 22000 - Snap-Action Style
Fenwal Model 23-020310-000 Snap-Action Thermoswitch with skeleton frame housing.
Fenwal Model 23-020810-000 Snap-Action Thermoswitch with junction box housing.
The Fenwal Snap-Action Style Thermoswitch Temperature Controllers are available with either single or dual switch control. Control action is provided by an expandable liquid acting on a bellows assembly. Bellows motion, created by volume changes of the liquid, actuates the switch contacts through a push rod.
High Load Capacity:
Current ratings up to 15 amps, 125-250 VAC are available.
Fast Response:
The expandable liquid, which surrounds the bellows, is in direct contact with the temperature sensing outer shell providing a fast response for accurate temperature control.
Adjustable Temperature Ranges:
An adjustable screw allows simple temperature adjustment. The switch can be set at any temperature within the controller's range. On dual switch units, each switch may be set individually, allowing independent action.
Variety of Temperature Ranges:
Both single and dual switch models are available with overlapping temperature ranges up to 300ºF .
Corrosion Resistance:
Certain gases or liquids (including water at elevated tmperatures) could be corrosive and may also cause electrolytic action which could severely shorten the life of the controller. Where corrosion of electrolysis is suspect, plating the brass shell may increase controller life. See Special Feature S.R. 34A. Also, protective wells are available for some models. Because the rate of corrosion or electrolysis is influenced by many systems parameters, such as chemical makeup and temperature of the solution, consult the supplier of our chemicals for suggestions.

Specifications:
  • Temperature Limits
    • Sensing bulb
      • Minimum: -100ºF (-75ºC)
      • Maximum: Upper range limit
    • Snap Switch
      • 175ºF (80ºC) maximum
  • Differential
    • Approximately 3.5% of span
  • Pressure Limit
    • 500 psi (3.45 MPa)
  • Pressure Effect
    • Set point decreases 1Fº per 100 psi applied pressure
  • Current Rating
    • 15.0 A 125-250 VAC
    • 0.50A 125 VDC
    • 0.25A 250 VDC
  • AC Contactor Size - up to size #1
  • Junction Box Finish
    • Type 208, 227, 228; Baked Gray Enamel
    • Type 210, 211: Zinc Plate

Download Fenwal Snap Action Thermoswitch Datasheet (pdf )

Model No. Housing Mounting Temp. Range Controls Price Order Quantity
23-020100-000 Skeleton Frame Immersion Fitting 100 to 300ºF Single Switch $218.00   Enter qty:  
23-020110-000 Skeleton Frame Immersion Fitting 25 to 225ºF Single Switch $218.00   Enter qty:  
23-020300-000 Skeleton Frame Flange 100 to 300ºF Single Switch $191.00   Enter qty:  
23-020310-000 Skeleton Frame Flange 25 to 225ºF Single Switch $191.00   Enter qty:  
23-020800-000 Junction Box - Not Drip Proof Immersion Fitting 100 to 300ºF Single Switch $281.00   Enter qty:  
23-020810-000 Junction Box - Not Drip Proof Immersion Fitting 25 to 225ºF Single Switch $281.00   Enter qty:  
23-021000-000 Junction Box - Drip Proof Flange 50 to 300ºF Single Switch $371.00   Enter qty:  
23-021010-000 Junction Box - Drip Proof Flange 0 to 250ºF Single Switch $371.00   Enter qty:  
23-021100-000 Junction Box - Drip Proof Immersion Fitting 50 to 300ºF Single Switch $359.00   Enter qty:  
23-021110-000 Junction Box - Drip Proof Immersion Fitting 0 to 250ºF Single Switch $359.00   Enter qty:  
23-022700-000 Junction Box - Not Drip Proof None 100 to 300ºF Dual Switch $326.00   Enter qty:  
23-022710-000 Junction Box - Not Drip Proof None 25 to 225ºF Dual Switch $326.00   Enter qty:  
23-022800-000 Junction Box - Not Drip Proof Immersion Fitting 100 to 300ºF Dual Switch $353.00   Enter qty:  
23-022810-000 Junction Box - Not Drip Proof Immersion Fitting 25 to 225ºF Dual Switch $353.00   Enter qty:  
Some items in stock. Out-of-stock items take 1-3 weeks. Please call for availability.
This page last modified on 1/18/2010
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