CBS4-RA Series

Description

• Unit equivalent to 4 earth leakage protection relays. 4 independent programmable relays available
• 4 inputs to connect the external toroidal transformers of the WG / WGS / WGC
• Self-reclosing with programmable earth leakage trip in each channel
• Superimmunized Type A relay with high frequency current filtering and high immunity. Monitoring in true root mean square (TRMS)
• Reduced size: 3 modules
• 5 independent programmable outputs:
  • 4 earth leakage trip outputs
  • 1 end-of-reclosing-sequence interlocking output
• Backlight display to show the information of the 4 channels:
  • Adjustment values
  • Instantaneous leakage current
• Trip/external reset input
• Automatic test of the connection and status of each external transformer
• Optional RS-485 Communications: type CBS-4C RA and CBS-4C RAL
• Assembly on DIN rail 46277 (EN-50022)
• Optional assembly on 72 x 72 panel with accessory M5ZZF1.

Applications

CBS-4 RA or CBS-4 RAL allow an intelligent earth leakage protection, with greatly reduced dimensions. A contactor is available per channel, enabling the automatic reclosure after a trip, thus offering the most adequate solution for public lighting, cash machines, refrigeration chambers, traffic lights, etc. In addition, version CBS-4 C, with RS-485 communications, is used with the PowerStudio software and it adds the centralised supervision in real-time, as well as a record log that can be analysed later on.

Documentation

Datasheet:   

Technical guide:

• CBS-4-RA: 
• CBS-4C-RA: 

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