NMTU-21C ABB
The NMTU-21C is a product manufactured by ABB. It is a multifunctional temperature monitoring relay that can be used in various applications. The product specifications and parameters are as follows:
- Power supply voltage: 24 – 240 V AC/DC
- Temperature measuring range: -50 to 260 °C
- Output contacts: 2 changeover contacts
- Sensor type: PT100, PTC KTY81-210, NTC 10K
- Dimensions: 22.5 x 75 x 115 mm (width x height x depth)

In addition to its temperature monitoring capabilities, the NMTU-21C also has protection functions that ensure the safe operation of the equipment it is used in. These protection functions include:
- Sensor break detection
- Sensor short-circuit detection
- Over-temperature protection
- Supply voltage monitoring
Overall, the NMTU-21C is a versatile product that can be used in a variety of applications where temperature monitoring and control are required. Its reliable performance and protection functions make it a popular choice among industrial and commercial customers.






