RCCBs in Bangladesh: Residual-Current Protection Selection
Review AKIJ Electricals residual-current circuit breakers using the protection requirements of the installation. An RCCB detects residual current; it is not a substitute for the separate overload and short-circuit protection required in the design. Confirm the correct device type and coordination with your electrician.
Planning Your RCCBs Purchase
Prepare the specified pole arrangement, rated current, residual-current sensitivity, rated voltage and detection type before ordering an RCCB. These describe different characteristics and should not be reduced to a single ampere value. The designer should consider the connected equipment and the complete protective arrangement.
Compare the separate MCB and MCCB ranges when reviewing coordinated protection. Follow the selected RCCB manufacturer’s instructions for installation, testing and maintenance.
RCCBs FAQs
A conventional RCCB does not provide those overcurrent functions. Suitable overcurrent protection must be included and coordinated with it as part of the installation design.
No. Rated current concerns the device’s current-carrying rating; residual-current sensitivity concerns its residual-current operation. Both must match the specified protection arrangement.
Have the electrical designer specify the type for the connected loads and installation requirements. Do not select by price or sensitivity alone, and verify the exact model documentation.