Motor Protection Thermistors

PTC thermistors are designed for over temperature protection of motor field / stator windings. They are normally used in conjunction with a VSD or motor protection relay, and transition to a high resistance state when the specified temperature is exceeded, shutting off the supply to the motor in order to prevent overheating.

Motor Protection Thermistor

Rated
Response
Temperature
NAT in °C
Lead Colours
Outer/Outer
(inner: Yellow)
Part Number
60White/GreySTPTC3060C
70White/BrownSTPTC3070C
80White/WhiteSTPTC3080C
90Green/GreenSTPTC3090C
100Red/RedSTPTC3100C
110Brown/BrownSTPTC3110C
120Grey/GreySTPTC3120C
130Blue/BlueSTPTC3130C
140White/BlueSTPTC3140C
145White/BlackSTPTC3145C
150Black/BlackSTPTC3150C
155Blue/BlackSTPTC3155C
160Blue/RedSTPTC3160C
170White/GreenSTPTC3170C
180White/RedSTPTC3180C

Data Sheet