Miniature Circuit Breaker (MCB) | Residential/commercial low-current circuits | Trip curve: B/C/D (IEC 60898), Breaking capacity: 6kA▲ (IEC 60898), Rated current: 63A▲ (IEC 60947-2) | Compact design, cost-effective, reliable overcurrent protection | No ground fault protection, limited fault current handling |
Residual Current Circuit Breaker (RCCB) | Residential/commercial ground fault protection | Trip current: 30mA (IEC 61008), Response time: ≤30ms, Breaking capacity: 4kA (IEC 61008) | Safeguards against electric shock, simple installation | No overload/short-circuit protection, lower breaking capacity |
Residual Current Circuit Breaker with Overcurrent (RCBO) | Industrial/commercial dual protection | Dual protection (ground fault + overcurrent), Breaking capacity: 6kA▲ (IEC 60898), Trip curve: C (IEC 60898) | Combines RCCB and MCB functions, high fault current handling | Higher cost, complex configuration |
Molded Case Circuit Breaker (MCCB) | Industrial high-power circuits (factories, data centers) | Breaking capacity: 10kA▲ (IEC 60947-2), Rated current: 100–600A (IEC 60947-2) | Handles high fault currents, durable for harsh environments | Bulky, requires professional installation, expensive |
Earth Leakage Circuit Breaker (ELCB) | Older residential/commercial installations | Trip current: 30mA (IEC 61543), Earth leakage detection via current transformers | Inexpensive, compatible with older systems | Less reliable, ineffective in unearthed systems |
High Breaking Capacity Circuit Breaker (HBCB) | High-fault environments (factories, substations) | Breaking capacity: 20kA▲ (IEC 62271-100), Rated voltage: 440V▲ (IEC 62271-100) | Withstands extreme fault currents, robust design | Exceedingly costly, specialized installation required |