SIEMENS 3UN2131-0AF7 THERMISTOR RELAY
The Siemens 3UN2131-0AF7 thermistor relay is designed for reliable motor protection by monitoring temperature through PTC sensors. It ensures safe shutdown in the event of overheating, protecting motors and connected equipment from thermal damage. Built for durability and precision, it offers dependable performance in industrial control systems.
Manufacturer: Siemens
Type: Thermistor Relay
Model: 3UN2131-0AF7
Technical Information
- Supply Voltage: 110 / 120 V AC
- Frequency: 50 / 60 Hz
- Contacts: 1 Normally Open, 1 Normally Closed
- Contacts Voltage:
- AC “ 11: 5A / 110V, 3A / 230V, 1.5A / 400V
- DC “ 11: 2A / 24V








