Your Cart
Due to the Coronavirus (COVID-19) pandemic we are suspending deliveries with Royal mail, therefore all deliveries will be sent out by Parcelforce.
Our cutoff times for courier deliveries is now 12pm instead of 2pm as Parcelforce are now collecting off us much earlier.
Opening times are now as follows until further notice:  Mon-Fri : 10am-2pm

Alpha Thermister / Temperature Sensor - CD25 - 1.021762

Alpha Thermister / Temperature Sensor - CD25 - 1.021762
  • Stock: In Stock
  • Product Code: ALTS131
  • Superceded No.: 1.015970 - 3.0160
  • Part Number: 1.021762

Part No: 1.021762 

SUPERSEDED: 6.8434250 / 6.8433090A

Thermister Sensor For:

  • ALPHA 240
  • ALPHA 280
  • ALPHA 500
  • ALPHA C23
  • ALPHA C27
  • ALPHA CB24
  • ALPHA CB28
  • ALPHA CB50


Thermisters are temperature sensors also known as NTC or PTC probes. They are used to measure the temperature inside boilers, typically the temperature of the water orflue gases. An NTC works by reducing it's resistance as it is heated up. This change in resistance is used by the pcb to alter the gas rate accordingly.
Heating Spares
Part TypeThermisters

Write a review

Note: HTML is not translated!
Bad Good
Important Cookie Information
This website uses cookies to improve your experience with us. By continuing to use the site you agree that we can save cookies on your device. Cookies are small text files placed on your device that remember your preferences and some details of your visit. Our cookies don’t collect personal information. For more information and details of how to disable cookies, please read our privacy and cookie policy.