ABB REJ603 REJ603BB401NN3XE Protection Relay

The ABB REJ603 REJ603BB401NN3XE is a CT-powered protection relay based on a microprocessor environment. It is mainly designed for the selective short-circuit and earth fault protection of feeders in secondary distribution networks and for protection of transformers in utilities and industries.

The relay has a wide range of features, including:

• Overcurrent protection (instantaneous, inverse, and definite time)

• Earth fault protection (instantaneous, inverse, and definite time)

• Directional protection

• Power swing detection

• Fault location

• Event recording

• Communication (RS-485 and PROFIBUS)

  
  

The REJ603 is a compact and robust relay that is designed for easy installation and operation. It is also backed by ABB's global support network.

Here are some of the technical specifications of the REJ603:

• Rated voltage: 110-240 V AC

• Rated frequency: 50/60 Hz

• CT input range: 0.5-5 A

• VT input range: 0-500 V AC

• Output contacts: 4 NO + 4 NC

• Communication ports: RS-485 and PROFIBUS

  
  

The REJ603 is a versatile and powerful protection relay that is ideal for a wide range of applications in the utility and industrial sectors.