Siemens 3RN2010-1CW30 Relay Module

Siemens 3RN2010-1CW30 Relay Module (Thermistor Motor Protection Relay)

Product Description
Siemens 3RN2010-1CW30 is a SIRIUS 3RN2 thermistor motor protection relay designed to protect motors against overheating. It evaluates signals from PTC thermistor sensors or bimetallic switches installed in motors and provides reliable protection against excessive temperature conditions.

Technical Parameters

• Brand: Siemens
• Model: 3RN2010-1CW30
• Product Type: Thermistor Motor Protection Relay
• Series: SIRIUS 3RN2
• Supply Voltage: 24–240 V AC/DC
• Housing Width: 17.5 mm compact design
• Reset Mode: Automatic reset
• Sensor Input: PTC thermistor / bimetallic switch
• Auxiliary Contacts: 1NO + 1NC
• LED Indicators: READY / TRIPPED status indication
• Rated Frequency: 50/60 Hz
• Output Relay Current: Up to 5 A
• Protection Degree: IP20
• Mounting: DIN rail mounting
• Weight: Approx. 135 g

Advantages & Features

• Reliable motor overheating protection
• Compact 17.5 mm space-saving design
• Wide supply voltage range (24–240V AC/DC)
• Supports PTC sensors and thermal switches
• LED status indication for easy troubleshooting
• Electrical isolation improves system safety
• Long mechanical service life

Applications

• Industrial motor protection systems
• Pump and fan control equipment
• Conveyor systems
• Machine automation equipment
• Factory production lines
• HVAC and process equipment

Notes

• Confirm sensor type compatibility before installation.
• Check motor temperature protection requirements.
• Ensure correct wiring of sensor and relay contacts.
• Disconnect power before maintenance or replacement.