Product Details

Electronic microcontroller based unit for the temperature monitoring of electric motors and MV dry type/cast resin transformers, the NT538AD, due to the 8 input channels and the multiple programming options, grants a great flexibility of use in many applications.

Developed with layout and advantages of the new technology platform (dual display, VOTING function, new microcontroller with increased operational capacity and data management), the NT538 AD provides the user, in a single product, the outputs:

  • Analog 4-20mA
  • Digital RS485 Modbus

It is equipped with 8 inputs for Pt100 sensors and thanks to the versatility of the new edition 2016, other sensor inputs are available.

It is equipped with 5 dry contact relay outputs, ALARM and TRIP, FAULT for working anomalies and drive of FAN1 and FAN2 cooling system.
On request, the unit is available with certification for Canadian and American market cULus, as well as RINA for marine applications.

All our units can also be supplied with a special coating on the electronic cards, resistant to difficult weather conditions, particularly characterized by high temperature and humidity (which are in tropical climates).

UNIVERSAL POWER SUPPLY: with input from 24 to 240 Vac-dc.

Other Versions
NT538 BASIC unit without any outputs such as Analog or Digital (COD. 1CN0156)


NT538 BASIC EN50121-5 unit  (COD. 1CN0210)

NT538AD EN50121-5  (COD. 1CN0211)

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Code: 1CN0137

N. & type inputs: 8 Pt100

Outputs: 5 relays + RS485 and 4.20mA

Plus: UL, RINA, EN50121-5


  • Datasheet-NT538AD-ITA-ENG.pdf


  • CE-NT538-AD.pdf

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