The R. STAHL Series 8510 thermistor motor protection relay offers motor protection for all motor powers since it detects overheating via a direct measurement of the motor winding temperature: PTC resistors measure the stator winding temperature and the relay is triggered when the limit value is reached. It can only be switched back to normal operation once it has cooled down. Optional: The relay only switches on again only after the "RESET" button is pressed
• One device – suitable for all motor powers
• Direct measurement of the temperature in the stator winding via PTC resistors
• Robust modules for vibration-proof screw mounting in Ex e enclosures
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