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What is the withstand rating of the 9422 flange-mounted, variable depth disconnect switch rated 30 A through 100 A?

Our 9422 flange-mounted disconnect switches rated 30 A through 100 A utilize the Square D heavy duty safety switch components and have the same UL Listed maximum short circuit current ratings. These ratings are as follows:


Switch Size Fused, Used With UL Listed Short Circuit Current Rating (RMS Sym.)
30 - 100 A UL Listed Class H or K Fuses 10k
30 - 100 A UL Listed Class R or J Fuses 200k @ 480V Max. 100k @ 600V Max.
Unfused, Used With
30 - 100 A Any Brand Circuit Breaker 10k
30 - 100 A UL Listed Class H or K Fuses 10k
30 - 100 A UL Listed Class R or J 200k
30 - 100 A Square D FA Breaker 4k
30 - 100 A Square D FH Breaker 18k

Any unfused switch always has a breaker or fuse feeding it and as such, its UL Listed short circuit current rating is expressed in terms of which short circuit branch protector is being used upstream.



CTA-ID : 2012775
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