Автоматические выключатели защиты электродвигателя (MPCB)
Compare published VIOX motor protection circuit breaker series for manual motor control, overload protection and short-circuit protection within coordinated motor starters.
Защита двигателяПерегрузка и короткое замыкание
Adjustable currentMatch the motor nameplate
Starter coordinationBreaker, contactor and accessories
Three-phase useVerify by model and circuit
What is an MPCB?
A motor protection circuit breaker is designed for switching and protection of motor circuits. Depending on the model, it combines adjustable overload response with short-circuit protection and manual control in a compact device.
Selection requires the motor rated current, starting characteristics, system voltage, prospective fault current and coordination with the contactor and accessories. Published breaking capacity and protection settings must be confirmed for the exact series.
MPCB Series Overview
Сравните опубликованные модели VIOX, используя факты, уже имеющиеся в данных о продукте.
How to choose an MPCB
Match the adjustment range to the motor, then verify fault interruption and starter coordination.
Motor rated current
Choose an adjustment range that includes the motor nameplate current.
Характеристики короткого замыкания
Verify breaking capacity against the prospective fault current and system voltage.
Starting characteristics
Confirm the device is suitable for motor inrush and starting duration.
Contactor and accessories
Coordinate the MPCB with the contactor, auxiliary contacts and enclosure arrangement.
Build a coordinated motor starter
The MPCB protects and manually controls the motor circuit; the contactor and control system provide remote operation where required.
Compare published MPCB series
Пустые ячейки означают, что значение недоступно в текущем обзоре продукции. Откройте страницу модели или запросите технический паспорт перед составлением спецификации.
MPCB Applications
Типовые условия эксплуатации, требующие проверки точных характеристик изделия.
Жилые здания
Protection and control of selected pumps, fans and building-service motors.
Промышленная автоматизация
Motor starters for conveyors, pumps, compressors and machine drives.
Солнечная энергетика и системы накопления энергии
Protection of suitable auxiliary motors and balance-of-system equipment.
MPCB Selection Questions
Быстрые ответы для предварительного сравнения семейств продуктов перед детальной проверкой цепи.
What does an MPCB protect against?
An MPCB is selected for motor-circuit overload and short-circuit protection within its published characteristics. Available auxiliary functions vary by series.
How is the MPCB current range selected?
Choose an adjustment range that includes the motor nameplate current, then set and commission the device according to the motor and product instructions.
How is an MPCB different from an MCB?
An MPCB is designed around motor starting and overload characteristics, while an MCB is generally used for branch-circuit overcurrent protection. Exact functions depend on the products compared.
Is a contactor still needed with an MPCB?
A contactor is used when remote or frequent electrical switching is required. The MPCB and contactor must be coordinated as a starter combination.
Which fault-current value should be checked?
Verify the published short-circuit breaking performance at the system voltage against the prospective fault current and coordination method.
Need the Right MPCB?
Let’s Match the Motor and Starter.
Send the motor nameplate data, system voltage, prospective fault current, starter arrangement, quantity and target market. VIOX will help identify the relevant published series.
Request MPCB Support