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Quick Details

Operating Temperature Range: -25 → +60 °C
Temperature Sensitivity: Overtemperature, Undertemperature
Width: 22.5mm
Brand: Siemens
Contact Configuration: DPDT
Minimum Temperature Sensed: +60°C
Monitoring Application: Thermistor motor protection relay
Minimum Operating Temperature: -25°C
Maximum Operating Temperature: +60°C
Height: 102mm
Temperature Sensing Range: +60 → +180°C
Dimensions: 91 x 22.5 x 102 mm
Supply Voltage: 24 V ac/dc
Maximum Temperature Sensed: +180°C
Length: 91mm

Specifications

3RN1 thermistor motor protection devices are thermal protection devices that are suitable, in combination with type A PTC resistors (cold conductors), for monitoring the temperature of electrical drives, transformer windings, oils, bearings, air etc.
Work according to the closed circuit current principle (monostable design) and therefore self-monitoring with regard to wire breakage
Triggered when control voltage fails
Electrical separation for devices with AC control voltage
Overall width of 22.5 mm
Screw connection