MCCB vs MCB - Difference between MCCB and MCB

MCB is a 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).

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Difference between MCCB and MCB

MCB

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.e. home wiring.

·         Generally, used where normal current is less than 100 Amps.

MCCB

MCCB:

·       MCBB stands for “Molded Case Circuit Breaker”.

·         Rated current in the range of 10-2500 amps.

·         Thermal operated for overload and & Magnetic operation for instant trip in SC (Short circuit conditions)

·         Interrupting rating can be around 10k – 200k amps.

·         Suitable for high power rating and high energy i.e. commercial and industrial use.

·         Generally, used where normal current is more than 100 Amps.