1. Personal safety protection

MCB: Mainly prevent overcurrent and short circuit

RCCB: Provides additional protection against electric shock by detecting and disconnecting even small leakage currents.

This enables RCCBs to more effectively prevent electric shock accidents caused by insulation failure or human body contact with live parts.

2. Residual current detection

MCB: Not primarily for detecting such currents

RCCB: Specifically designed to detect residual currents, which are small leakage currents that occur when electrical leakage is expected in a circuit path.

RCCBs can more effectively identify potential electrical faults and quickly trip circuits to prevent accidents.

3. Fire Protection

MCB: Although MCB provides overcurrent protection, it may not be so effective in preventing fire accidents caused by small leakage currents

RCCB: Because RCCB is able to detect leakage current, it can help prevent electrical fires caused by insulation breakdown or other failures, and can effectively reduce the risk of overheating and subsequent fires.

4. Sensitivity

MCB : Low-level faults may be overlooked

RCCB: RCCB is highly sensitive to even small leakage currents, ensuring that even small hazardous situations can be quickly identified, thereby increasing safety.

Summarize

Proper installation, regular testing and maintenance of RCCBs are essential to ensure their continued effectiveness. RCCB should be installed and maintained by professionals to ensure its normal operation and safety.