Siemens Thermistor motor protection relay, compact, screw, 1 c/o Part number 3RN2000-1AW30

Product Overview

The Siemens 3RN2000-1AW30 is a compact thermistor motor-protection relay from the SIRIUS 3RN2 series. It is designed for monitoring and protecting electric motors using PTC or thermistor temperature sensors. With its slim 17.5 mm housing, wide supply voltage range and automatic reset function, it is ideal for space-saving motor protection in industrial control panels and automation systems.

Key Features

• Thermistor motor protection relay for temperature monitoring
• Compact 17.5 mm housing for high-density control panels
• Wide supply voltage range: 24 … 240 V AC/DC
• Automatic reset after fault clearance
• 1 changeover contact (1 CO / SPDT)
• LED status and fault indication
• Screw terminal connections
• Suitable for PTC thermistors and bimetal temperature switches
• DIN-rail mounting (35 mm standard rail)

Technical Specifications

• Article Number: 3RN2000-1AW30
• Product Family: SIRIUS 3RN2 thermistor motor-protection relays
• Function: Motor overtemperature monitoring via thermistor / PTC sensors
• Supply Voltage: 24 … 240 V AC/DC
• Contact Configuration: 1 changeover (SPDT)
• Output Mode: Auto-reset
• LED Indicators: Status and trip indication
• Rated Switching Current: up to 5 A
• Rated Insulation Voltage: 300 V
• Impulse Withstand Voltage (Uimp): 4 kV
• Housing Width: 17.5 mm
• Mounting: DIN rail (35 mm)
• Degree of Protection: IP20
• Operating Ambient Temperature: −25 °C … +60 °C
• Mechanical Service Life: approx. 10,000,000 switching cycles

Compliance & Certifications

• Designed according to international standards for motor protection relays
• Conforms to SIRIUS 3RN2 system requirements for industrial motor protection
• Suitable for integration into industrial and automation control cabinets

Applications

The Siemens 3RN2000-1AW30 is used to protect electric motors against overheating by evaluating signals from PTC or thermistor sensors. It is commonly applied in motor control centers, pump and fan systems, conveyor drives, compressors, HVAC installations, and industrial machinery where motor temperature protection and compact mounting are required.