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CBS4-RAL Series (consult availability)

Central protection and earth leakage reclosing with wg / wgc external transformer




  • 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.



Vial Sant Jordi s/n, 08232
Viladecavalls (Barcelona) Spain
Tel: (+34) 93 745 29 00
Fax (+34) 93 745 29 14

Technical Support

Tel. (+34) 93 745 29 19


Testing and Calibration

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