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Why is the thermal magnetic circuit breaker rating higher when use recommended line fuses for the Altistart ATS23 as instructed in the catalog?

Issue:   Why is the thermal magnetic circuit breaker rating higher when use recommended line fuses for the Altistart ATS23 as instructed in the catalog?
 
Product Line:   ATS23
 
Environment:  All
 
Cause:   N/A
 
Resolution:   In order to obtain the corresponding AIC rating the proper co-ordination has to occur. Through testing and observing the trip characteristics, etc. of the devices when the the thermal magnetic circuit breaker is coordinated with Type RK5 or L power fuses as recommended in catalog 8636CT9701, the withstand rating is 65,000 A RMS for all models.


 
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