Having trouble?
Go to tutorial
📝 How it works:
Size circuit breakers (MCB): rated current, trip curve B/C/D and cable check to IEC standards.
Fill in the fields below and click "Calculate".
Size circuit breakers (MCB): rated current, trip curve B/C/D and cable check to IEC standards.
Fill in the fields below and click "Calculate".
Circuit breaker calculator (MCB sizing)
Size the right miniature circuit breaker:
- Rated current: Automatic from load power
- Trip curve: B (domestic), C (motors), D (transformers)
- Cable check: Current-carrying capacity per IEC 60364
- Voltage drop: Check ≤ 3%
Advertisement
