What is the difference between an MPCB and an MCB?

Question

Accepted Answer

MPCB and MCB are both circuit protection devices, but they differ in terms of their applications and trip characteristics.

MCB stands for Miniature Circuit Breaker, while MPCB stands for Motor Protection Circuit Breaker.
MCBs are primarily used for residential and commercial applications, while MPCBs are specifically designed for motor protection in industrial settings.
MCBs have a fixed trip current rating and are typically used to protect circuits and appliances from overload and short circuits.
MPCBs have adjustable trip current settings and provide additional features like motor overload protection, phase failure protection, and short circuit protection for motors.
MCBs are available in lower current ratings, usually up to 125A, while MPCBs are available in higher current ratings, typically ranging from 6A to 800A.
Examples of MCB brands include Schneider Electric, Siemens, and Legrand, while examples of MPCB brands include ABB, Eaton, and Mitsubishi Electric.

Accepted Answer

MPCB= Motor Protection Circuit Breaker

MCB= Miniature Circuit Breaker

MCB current capacity is lower than MPCB.

MCB used for Small load protection 1A to 100 A

MPCB used for heavy load protection greater than 100 Ampere

Accepted Answer

Miniature protective circuit breaker and miniature circuit breaker

Accepted Answer

MCB = Miniature Circuit BreakersMPCB = Motor Protection Circuit BreakersMCB are designed for a wide variety of functions circuit protection functions while MPCB's are used for the specific function of protecting circuits driving electric motors. MPCB's usually have thermal and magnetic trips or mechanism to break the circuit when necessary. MPCB are usually more expensive for the same control ratings because they are more complicated.

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