Fused Low Voltage Circuit Breakers
Fused Low Voltage Circuit Breakers
(OP)
Can limiters be put the load side of low voltage power circuit breakers? I have alawys seen them on the line side. Is there an associated standard like NEMA or ANSI for this application. The reason that we want to put the limiters on the load side is because we are doing a retrofill job where the old breakers are old FPE breakers with fuses on the load side.
Thanks
Thanks






RE: Fused Low Voltage Circuit Breakers
If you are retrofitting or replacing the breaker first you neeed a short circuit study. After that is complete, you will see what you need for interrupting capacity.
The application may not require fused circuit breakers.
JIM
RE: Fused Low Voltage Circuit Breakers
RE: Fused Low Voltage Circuit Breakers
RE: Fused Low Voltage Circuit Breakers
RE: Fused Low Voltage Circuit Breakers
If your goal is not to provide added protection OF THE BREAKER but rather the downstream system, then I don't see a problem with that. In other words, if your existing breaker is already rated for the available fault current, but you want to limit the fault current down stream because other equipment cannot withstand that level, then current limiters are a legitimate choice, maybe your only viable choice.
You need a full detailed coordination study before embarking on any of this.
RE: Fused Low Voltage Circuit Breakers