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Fenwal Thermoswitch Controllers
Series 17000 - Cartridge Style
The Fenwal Thermoswitch Temperature Controller is a 5/8" diameter cartridge-style mechanical thermostat with an adjustable temperature set point. The Series 17000 is thebase of all Thermoswitch controllers. This unit can be inserted into a .625 in. reamed hole, except for the 17052 which can be inserted into a .750 reamed hole. The 47000 Series are .625 diameter thermoswitches that are UL recognized. Lightweight and compact, these units are economical temperature controllers or stand-alone high or low limit controllers. The Thermoswitch controllers control temperatures as low as -100ºF and as high as 1100ºF with the proven dependability of over 60 years of service to satisfied customers.
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
01-017000-000 Fenwal Cartridge Thermoswitch 5/8" -100 to 400ºF Opens Brass $200.00   Enter qty:  
01-017021-000 Fenwal Cartridge Thermoswitch 5/8" -100 to 400ºF Closes Brass $235.00   Enter qty:  
01-017002-000 Fenwal Cartridge Thermoswitch 5/8" -100 to 600ºF Opens 300SS $200.00   Enter qty:  
01-017023-000 Fenwal Cartridge Thermoswitch 5/8" -100 to 600ºF Closes 300SS $235.00   Enter qty:  
01-017052-000 Fenwal Cartridge Thermoswitch 13/16" -100 to 600ºF Opens 300SS $227.00   Enter qty:  
01-047002-000 Fenwal Cartridge Thermoswitch
U/L Recognized
5/8" -100 to 600ºF Opens 300SS $208.00   Enter qty:  
01-047023-000 Fenwal Cartridge Thermoswitch
U/L Recognized
5/8" -100 to 600ºF Closes 300SS $223.00   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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