Shunt Trip
What is the purpose or benifit of using a shunt trip circuit breaker?
This is what this source said the purpose of them are;
Some times it is advantageous to turn a breaker off from a remote location. To facilitate this task, an accessory called a shunt trip feature is installed by the manufacture inside of the breaker. This device consists of an electro-magnetic trip coil that is connected in series with an external field wired switch. When the switch contacts are closed, power is passed to the shunt trip coil causing the breaker’s mechanical latch to move to the open position. Re-closing the breaker is done by physically going to the breaker and manually moving the operating handle to the on–closed position.
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