Key Advantages:
Offers Short-Circuit Breaking Capacity for Individual Motor Loads: When numerous small and medium motor loads exist in a circuit requiring high breaking capacity, there is no high breaking capacity circuit breaker with a small rated current for a short circuit protection. The MPCB can be used in 100kA short circuit current circuits for three-phase, 240V motors with rated capacity upto 15kW, and in 50kA short circuit current circuits for three phase, 415V motors with rated capacity up to 30kW.
Eliminates the Need for Back-up Breaking System: In cases, when back-up MCCB is installed upstream for short circuit protection, a short in one of the load circuits also trips the upstream breaker and interrupts all the other operating circuits. Despite their compact size, the MPCB provides high-performance short-circuit current breaking. They eliminate the need for an upstream circuit breaker for back-up use.
Integrates Overload Protection: Motor Protection breakers cannot be adjusted to match the rated current of the motor being protected. Equipped with a wide range current adjustment dial (with maximum/minimum ratio of 1.4 to 1.6), the MPCB easily adjusts to match the rated current of the motor, for optimum protection.
Reduced Panel Size: Considerable space is required to install a back-up circuit breaker or a combination starter consisting of a circuit breaker and a thermal overload relay. As a result, the panel size has to be increased. The compact size of the MPCB, including overload relay functions, enables a smaller installation area with less wiring space, for a reduction in panel size.