Table of Contents • • • • • • • • • Circuit breakers are installed and used for safety purposes in both residential as well as commercial and industrial areas. In power distribution, we need circuit breakers at different levels. Depending on the current carrying capacity, breaking capacity and other functions, we select a suitable circuit breaker according to our needs i.e. VCB,, MCCB and then MCB, this is common hierarchy being followed in power distribution system. Main Difference between MCB and MCCB • Also read: What is MCB?

Eurythmics Rare on this page. 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.. • Generally, used where normal current is less than 100 Amps. What is 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. Should I go for MCB or MCCB? Download Ebook Statistika Gratis. Now the question is that for a situation, where standard current carrying capacity needed is 100A with breaking capacity of 15KA, what should be used?