RCD Add on blocks (RCD AoB)

RCD Add on blocks are designed to be fitted on right side of hager MCBs. The combined unit (MCB + RCD Add on block) provides protection against over load, short circuit & earth leakage faults. RCD AoBs offer great flexibility as well upgradeability to customers.

Technical details

  • Conforms to IS 12640 (Part 2):2008 / IEC 61009-1:1996
  • Ratings - 25A, 40A & 63A
  • No. of poles - 2P & 4P
  • Sensitivity - 30mA, 100mA & 300mA
  • Breaking capacity – 10kA (with MCB)
  • Earth fault trip indication on front face









Features & benefits

  • Low inventory
- just 3 current ratings of AoBs for all MCBs from 0.5 to 63A
  • Flexibility to upgrade
- higher rated MCB can be used in case load increases in future
  • Rating mismatch protection
- AoB can not be combined with MCBs higher than its own rating to avoid its burn-out
  • High breaking capacity
- combined unit (MCB+AoB) provides 10kA breaking capacity
  • Reliable protection
- AoB must be engaged to switch on a circuit. It ensures earth-leakage protection under all circumstances.
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