While MPCB can be used as standalone motor protection, it has a disadvantage compared to MCCB+DOL. MCCB+DOL provides a backup protection for a motor, which means that it can protect the motor even if the MPCB fails to operate1. On the other hand, MPCB is a specialized device that is designed for motor protection, and it may not provide adequate protection for other circuits23. Additionally, MPCB may not be suitable for high starting currents, and it may interrupt the circuit during starting currents, which can cause nuisance tripping1. Therefore, it is important to consider the specific application and the level of protection required before selecting between MPCB and MCCB+DOL. Expert advice is recommended during selection to ensure reliable protection for the motor and other circuits23.
0 Comments