The Siemens 3RN2010-1CW30 thermistor motor protection relay provides advanced temperature monitoring for electric motors using PTC thermistors. It helps prevent motor damage caused by overheating by disconnecting the load when the preset temperature limit is exceeded. With two normally open (NO) and one normally closed (NC) output contacts, it allows for versatile wiring configurations in safety and control systems. Supporting a wide operating voltage range of 24–240V AC/DC, the device is ideal for global industrial applications. Its DIN rail-compatible design ensures fast integration and high reliability in thermal protection. ⚙️ Technical Specifications (EN): Part Number: 3RN2010-1CW30 Function: Motor thermal protection using PTC sensors Control Voltage: 24–240V AC/DC Sensor Type: PTC thermistors Output Contacts: 2 NO + 1 NC Mounting Type: DIN rail Response Type: Activates output when temperature threshold is exceeded LED Indicators: Yes – for operation and fault status Application: Motor protection in industrial control systems Standards Compliance: IEC/EN 60947-5-1, IEC/EN 60947-8