(one) The auxiliary Make contact with is principally accustomed to display the opening and shutting standing of the circuit breaker, nevertheless it can not exhibit whether it is fault tripping. It's linked in the Management circuit on the circuit breaker. The rated existing from the molded case circuit breaker shell frame grade is 100 as the single break place transfer Get in touch with, and also the bridge style Get in touch with construction is 225 and earlier mentioned, Together with the agreed heating existing of 3A; Two Generally open and two Generally closed can be installed for shell frame with rated existing of four hundred and earlier mentioned, and the agreed heating present is 6A.
The rated limit shorter circuit breaking capability is breaking potential under specified situations. Just after performing based on the specified exam process, It's not deemed which the circuit breaker carries on to carry its rated existing.
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If the shunt release button is pressed, the armature of shunt release might be shut for making the totally free tripping system act and the main Get hold of will disconnect the key circuit.
The rated present is fairly massive, body circuit breaker (ACB) or moulded case circuit breaker with superior efficiency can be utilized as an alternative. For the branch with significant short-circuit present, interest really should be compensated to whether The existing limiting capacity in the circuit breaker can meet up with the necessities. When leakage safety is needed, the circuit breaker need to have this functionality.
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