The thermistor relay is used as protection relay for motors against thermal overload (inadmissible heating). This heating might be caused by mechanical overload on the shaft or when operating the motor with inadmissible voltages. A PTC thermistor is used as sensor. It should be mounted to the part of the motor that heats most in case of overload (e.g. integrated in motor winding). The device can also be used for motors with integrated thermo switch. Integrated fault memory with reset key at the front.
| Features | |
| Housing colour: | Grey |
| Mounting position: | Horizontal/Vertical |
| Connection method: | Screw |
| Stripping length: | 8 mm |
| Minimum conductor cross section (solid): | 0.2 mm² |
| Maximum conductor cross section (solid): | 2.5 mm² |
| Contact material: | AgNi |
| Nominal input voltage: | 230 - 400 V |
| Maximum switching voltage: | 250 V |
| LED indicators: | Status |
| Pollution degree: | 2 |
| Overvoltage category: | CAT III |
| International Protection (IP) code: | IP20, IP40 |
| Operating temperature (T-T): | 0 - 55 °C |
| Storage temperature (T-T): | -20 - 70 °C |
| Lifetime (cycles): | 10000000 |
| Weight & dimensions | |
| Width: | 22.5 mm |
| Depth: | 95 mm |
| Height: | 75 mm |
| Weight: | 150 g |
| Logistics data | |
| Country of origin: | Germany |
| Technical details | |
| Sustainability compliance: |  |
| Sustainability certificates: | REACH |
