Global site

Temperature monitoring relays

Two ranges of temperature monitoring relays meet the needs of your applications


ABBs portfolio of temperature monitoring relays is designed to measure the temperatures of solids, liquids and gaseous media using a variety of different sensors. Temperature monitoring relays are used in a wide array of applications. In conjunction with temperature sensors, such as PT100, PT1000, NTC or PTC sensors, they monitor the temperature of electric motors, control cabinets, busbars and protect transformers from overheating.

The portfolio consists of the following devices:  
  - Digital: a range of innovative temperate monitoring relays, which can be set up either via a back-lit LCD or smartphone app. This type of devices includes variants with embedded Modbus RTU communication interface enabling ABB‘s AbilityTM Energy and Asset Manager.
  - Analog: a range of well-established and proved temperature monitoring relays. The settings such as temperature threshold and hysteresis can be configured easily using front-facing potentiometers adjustment. 

Are you looking for support or purchase information?

Web page CM-TCN 




The innovative CM-TCN temperature monitoring relay can be set up exactly as you need, either via a back-lit LCD or smartphone app. Parametrization and configuration are just one touch away with the ABB EPiC app – even in a non-powered state – reducing installation time by 80%. And with just one relay covering a wide range of application, stocks can be reduced significantly, making ABB’s Smart monitoring relays a true game changer. 










ABB_picto_48x48_own_creation_one_look (002)

One look to have all information needed: Back-lit LCD for easy reading and parametrization
The LCD at the front of the relay shows the currently measured values and maintenance data. And with just one push, the symbol-based menu structure can be accessed via the push-rotate button.


One device: Thermal protection and condition monitoring 
Smart temperature monitoring relays ensure that your application remains operational by detecting potential failures in advance. They protect the life of your assets by providing early detection of unacceptable temperature rises and the need for maintenance

mobile settings


One touch to set up 80 % faster: NFC parametrization via smartphone app
One touch is all that is needed for fast, easy and intuitive configuration with the ABB EPiC smartphone app. Parameter settings can be edited and stored in the app and then copied to different devices, even if they are not in the powered state.


ABB’s well-established CM-TCS relay range monitors and measures the temperatures of solids, liquids and gaseous media using a variety of different sensors. Overtemperature and undertemperature monitoring as well as open- or closed-circuit principle monitoring can be configured for any device quickly and easily. 
When the temperature falls below or exceeds the set threshold value, output relays change position according to your configured functionality and the front-face LEDs show the current status. 
Discover how CM-TCS temperature monitoring relays can help protect your application.


Main benefits
• Down time and commissioning time reduced
• Engineering time savings
• Selection time reduction


Main features

• Different sensor types e.g. PT100
• Different monitoring functions, including over-/undertemperature, window monitoring
• All configurations and adjustments are via front face controls
• One or two threshold values
• Open- or closed-circuit principles easily configurable
• Short-circuit monitoring and interrupted wire detection
• Screw connection or Easy Connect push-in technology available 



Products and documents

Related products