HOME » NEWS » Industry News » DC Moulded Case Circuit Breaker

DC Moulded Case Circuit Breaker

Author: Site Editor     Publish Time: 2023-05-12      Origin: Site

DC Moulded Case Circuit Breaker

How do DC circuit breakers work?

DC circuit breakers work in the same way as AC circuit breakers, with thermal and magnetic protection. The thermal protection trips the breaker when the current exceeds the rated value. When the current generates more heat, the bimetallic contacts heat up and expand.

Why use a DC circuit breaker?

DC power is used because it allows a battery pack to provide closing/tripping power to the circuit breaker control circuit in the event of complete AC power failure. This operating mechanism has the advantages of high reliability, low failure rates, long maintenance intervals and low maintenance effort.

Are DC circuit breakers placed on the positive or negative terminal?

For DC circuits, the overcurrent protection is always placed on the positive pole. The circuit protection should be connected to the mains as far as possible.


  • AC Moulded Case Circuit Breaker manufactor logo logo
  • Subscribe to Our Newsletter​​​​​​​

  • get ready for the future
    sign up for our newsletter to get updates straight to your inbox
Leave a Message
Send Us a Message