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Fenwal Thermoswitch Controllers
Series 17100 - Hex Head Style
The Fenwal Thermoswitch Temperature Controller is a 5/8" diameter hex head cartridge-style mechanical thermostat with an adjustable temperature set point. The Series 17100 has all the features of the Cartridge type above plus the addition of a standard 1/2" NPT pipe thread for mounting purposes, except for the 17152 which has a 3/4" NPT pipe thread fitting. The 47102 is a .625 diameter thermoswitch that is UL recognized.
Principle of Operation:
The Fenwal Thermoswitch controller is a strut-and-tube type thermostat comprised of two basic parts: the outer shell, made of high-expanding metal and the strut assembly made of low-expanding metal. A pair of electrical contacts is mounted on the strut assembly and installed in the shell under tension. The temperature at which the contacts "make" or "break" can be regulated by a temperature adjusting sleeve.
Fast Response:
Because the outer shell of the Thermoswitch controller is the active sensing member, and not merely a housing, response to temperature change is almost instantaneous.
Close Control:
The controller's shell and strut arrangement has "anticipation" characteristics which substantially reduce the amount of overshoot and undershoot during conditions of rapid temperature change.
Extreme Sensitivity:
The strut and contact assembly operates by slow make and break. This means that every temperature change, no matter how small, causes a corresponding change in the space between the electrical contacts. Therefore, contact action can be produced by a very small temperature change, which accounts for the Thermoswitch controller's excellent resolution os 0.1ºF (0.05ºC).

Agency Approval:
Various models are listed to component recognized by Underwriters Laboratories (UL) and certified by the Canadian Standards Association (CSA).

Specifications & Options:
  • Shell dimensions: 5/8" diameter, 3-9/16" long (3" long on units with threads)
  • Standard lead wire: 8-10 inches
  • Maximum volts: 240VAC / Vdc consult factory
  • Maximum watts: 1200 AC / Vdc consult factory
  • Maximum operating temperature: 600ºF / 316ºC
  • Minimum operating temperature: -100ºF / -73ºC
  • Contact action: slow make and break
  • Options (call for pricing and applicability to specific models):
    • Special Marking
    • Extended Lead Wires
    • Factory Temperature Setting
    • Temperature Restraining Device
    • Tamper-Proof Cap
    • Dial and Knob
    • Moisture Resistant Seal & Moisture Resistant Tamper Proof Cap
    • Armored Cable (over lead wires)
    • Terminal Plug Connector
    • Extended Temperature Adjusting Sleeve
    • Protective Wells

Download Fenwal Thermoswitch Datasheet (pdf 700K)

Part No. Description Diameter Temp. Range Contact
Operation
on Temp Rise
Shell
Material
Price Order Quantity
01-017100-000 Fenwal Hex Head Thermoswitch 5/8" -100 to 400ºF Opens Brass $212.00   Enter qty:  
01-017121-000 Fenwal Hex Head Thermoswitch 5/8" -100 to 400ºF Closes Brass $228.00   Enter qty:  
01-017102-000 Fenwal Hex Head Thermoswitch 5/8" -100 to 600ºF Opens 300SS $248.00   Enter qty:  
01-017123-000 Fenwal Hex Head Thermoswitch 5/8" -100 to 600ºF Closes 300SS $248.00   Enter qty:  
01-017152-000 Fenwal Hex Head Thermoswitch 13/16" -100 to 600ºF Opens 300SS $318.00   Enter qty:  
01-047102-000 Fenwal Hex Head Thermoswitch
U/L Recognized
5/8" -100 to 600ºF Opens 300SS $259.00   Enter qty:  
Some items in stock. Out-of-stock items take 1-3 weeks. Please call for availability. FOB: Inglewood, CA.
This page last modified on 12/29/2016
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