[Solved] Will there be any negative effects if I install the Circuit Breaker to the system voltage lower than its “Rated Operational Voltage”?

nicy12 Asks: Will there be any negative effects if I install the Circuit Breaker to the system voltage lower than its “Rated Operational Voltage”?
I am referring the Schneider’s EasyPact Circuit Breakers (but I do believe that my question also applies to Circuit Breakers in general)

Let be EZC250F3200 model our subject for today. By looking at its datasheet, we can see that:

The definition of $U_e$ from IEC 60947-2 standard is:

$U_e$ is generally stated as the voltage between two phases

which leads me to believe that the term “Rated Operational Voltage” simply means that it is the Circuit Breaker’s voltage at which it is designed to perform.

Going back to my question, will there be any negative effects/impacts on Circuit Breaker’s

  • internal parts/functions
  • terminals
  • or even safety of operation

if I install the Circuit Breaker to the system voltage (230 V, 60 Hz, 3-phase, No Line-to-Neutral loads) that is much lower compared to its “Rated Operational Voltage” $U_e$ (550 V AC)?

I hope that your answers will be based on a reference book, technical paper, or standard, or perhaps you are working on Circuit Breaker production. Anyone can simply say that there will be no negative effects as long as the system voltage doesn’t exceed the rated operational voltage but I want a piece of evidence that can give me assurance. I really appreciate your effort to answer and I am looking forward to learning from you.

PS: I don’t know if it matters or not, but the circuit on which the EZC250F3200 will be installed is mainly composed of various small motor loads and heating elements.

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