MCB vs MCCB vs ACB: What Is the Difference?
16 June 2026 Al Ashraf Electric Store
MCB, MCCB and ACB are all circuit breakers, but they are built for very different current ranges and applications.
MCB — Miniature Circuit Breaker
Used for low-current circuits (up to ~125A) in homes and small commercial setups. Compact and DIN-rail mounted.
MCCB — Moulded Case Circuit Breaker
Handles higher currents (up to ~1600A) with adjustable trip settings. Ideal for sub-distribution and motor protection in industry.
ACB — Air Circuit Breaker
Built for very high currents (up to 6300A) at the main incomer of large installations, with advanced protection and metering.
Quick comparison
| Type | Typical Range | Where |
|---|---|---|
| MCB | Up to 125A | Homes, shops |
| MCCB | Up to 1600A | Sub-distribution, motors |
| ACB | Up to 6300A | Main incomer, industry |
We stock all three from leading brands. Browse our range.
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