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    MCCBs

    MCCBs also known as a Moulded Case Circuit Breaker is an electrically operated switch designed to protect an electrical circuit from damage caused by overcurrent, typically resulting from an overload or short circuit.

    RS Components offer an extensive range of high-quality devices from industry-leading brands including Siemens, Schneider Electric, ABB, and Eaton. Our products enable you to provide reliable circuit protection for all of your electrical systems and energy distribution needs. Choose from a vast selection of MCCBs with various current ratings, voltage ratings, and breaking capacities.

    How do they work?

    The basic function of an MCCB is to interrupt current flow after a fault, once the fault is corrected the circuit breaker can be reset (either manually or automatically) to resume normal operation.

    MCB or MCCB?

    Although MCBs and MCCBs both are circuit breakers, there are key differences between the two that make them suitable for specific jobs.

    The main difference between the two is the capacity, MCBs are rated under 100 amps with an interrupting rating of under 18,000 amps. Consequently, the trip characteristics may not be adjusted since they cater to low circuits.

    On the other hand, an MCCB comes with an adjustable trip characteristic for the higher loads. An MCCB would typically provide amps as high as 2500 or as low as 10, depending on the application. The interrupting rating of MCCBs ranges from around 10,000 amps to 200,000 amps.

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