check for an overload or short
an interlocking device
2
2
200 amps
A local breaker backup relay is used to check the operation of distribution circuit breakers and to trip the feeder circuit breaker if the distribution circuit breaker fails to trip on an overload.
the three phase indicator lights will illuminate
200 amps
A TPN MCCB is a three phase neutral molded case circuit breaker. This type of circuit breaker is commonly used in low voltage power distribution systems.
The biggest circuit breaker in any home is the main breaker located in your main breaker panel that is installed where your electrical service cable comes into your home.
Should be a breaker in the power distribution box under hood
The connection blades and how they connect into the distribution panel's bus.
Air-blast circuit breakers are used to disconnect high-voltage transmission or distribution circuits in the event of a fault. One circuit breaker is required for each of the three line conductors; there is not normally a neutral conductor in high-voltage three-phase transmission/distribution lines.