Miniature Circuit Breaker Dimensions

Miniature circuit breakers (MCBs) are electrical safety devices that protect circuits from overloads and short circuits. They are typically used in residential and commercial applications, and are available in a variety of sizes and ratings. MCBs are rated by their current rating, which is the maximum amount of current that the breaker can safely carry without tripping. They are also rated by their voltage rating, which is the maximum voltage that the breaker can be used with.

MCBs are typically installed in the main electrical panel of a building, and they protect the entire electrical system from damage. When a circuit is overloaded or short-circuited, the MCB will trip and open the circuit, preventing further damage. MCBs are also used to protect individual circuits, such as those that supply power to a specific appliance or piece of equipment.

MCBs are available in a variety of sizes and shapes, and they can be installed in a variety of ways. They are typically mounted in a panelboard, but they can also be surface-mounted or flush-mounted. MCBs are typically connected to the circuit using wire nuts or terminal screws.

MCBs are an essential part of any electrical system, and they help to protect people and property from electrical hazards. When choosing an MCB, it is important to select a breaker that is the correct size and rating for the application.

Here are some of the key dimensions to consider when choosing an MCB: *

Current rating:

The current rating of an MCB is the maximum amount of current that the breaker can safely carry without tripping. MCBs are typically available in current ratings from 10 amps to 60 amps. *

Voltage rating:

The voltage rating of an MCB is the maximum voltage that the breaker can be used with. MCBs are typically available in voltage ratings from 120 volts to 240 volts. *

Breaking capacity:

The breaking capacity of an MCB is the maximum amount of current that the breaker can interrupt without damage. MCBs are typically available in breaking capacities from 10kA to 60kA. *

Trip time:

The trip time of an MCB is the amount of time it takes for the breaker to trip when a fault occurs. MCBs are typically available in trip times from 0.1 seconds to 1 second.

By considering these key dimensions, you can choose an MCB that is the right size and rating for your application. This will help to ensure that your electrical system is protected from damage.


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