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.
| Rated Response Temperature NAT in °C | Lead Colours Outer/Outer (inner: Yellow) | Part Number |
|---|---|---|
| 60 | White/Grey | STPTC3060C |
| 70 | White/Brown | STPTC3070C |
| 80 | White/White | STPTC3080C |
| 90 | Green/Green | STPTC3090C |
| 100 | Red/Red | STPTC3100C |
| 110 | Brown/Brown | STPTC3110C |
| 120 | Grey/Grey | STPTC3120C |
| 130 | Blue/Blue | STPTC3130C |
| 140 | White/Blue | STPTC3140C |
| 145 | White/Black | STPTC3145C |
| 150 | Black/Black | STPTC3150C |
| 155 | Blue/Black | STPTC3155C |
| 160 | Blue/Red | STPTC3160C |
| 170 | White/Green | STPTC3170C |
| 180 | White/Red | STPTC3180C |