Miniature Circuit Breaker or MCB: What is it? (Working Principle) | Electrical4U

MCB is miniature circuit breaker which is used to break small currents. Like in domestic LT circuits. The ratings usually end up to 100 A. MCCB is a Module case circuit breaker which has a rugged construction as it can break larger currents usually from (100-1000A). MCB: • MCB stands for “Miniature Circuit Breaker”. • Rated current under 100 amps. • Interrupting rating of under 18,000 amps. • trip characteristics may not be adjusted • Suitable for low current circuits (low energy requirement), i