Conclusion First: 17AM201 (High Resistance) cannot directly replace 17AM021 (Low Resistance)

I. Meaning of Model Code (Distinguishing Temperature & Internal Resistance)

Three-digit coding rule for 17AM series:

- The first two digits of the last three ...

Incoming Inspection Items for Thermal Fuses
 
1. Visual Inspection
 
1. Printing: Model number, batch code and manufacturer logo are clearly and completely printed without missing, blurring or fading.
2. Body: No cracks, deformation, damage or scorch mark...