For the Series 300, the WCR will depend on the fuse or specific breaker used to coordinate with the transfer switch. Kindly refer to the table below as quick reference for the ratings. Refer to Publication 1128 to view the full lists of specific circuit breakers tested by ASCO to qualify for specific breaker rating.

Notes:
1) All WCR values indicated are tested in accordance with the requirements of UL 1008, 7th Edition. See ASCO Pub. 1128 for more WCR information
2) Application requirements may permit higher WCR for certain switch sizes.
3) Short Time ratings are provided for applications involving circuit breakers that utilize trip delay settings for system selective coordination
4) Max fuse rating is 1200A on front connected H frame switches
5) Switches utilizing overlapping neutral (code "C") have 35kA, 0.050 Sec time based rating at 480V Max
6) Rating shown is for Bypass switches only, Transfer Switch rating is 100kA for the G frame and 65kA max for the H and P frames. See ASCO Pub. 1128.
7) See ASCO for Service Entrance Switch ratings
8) These frames are only available on the 7000 Series product
9) Short Time Rating applies to 600A Bypass switch only, the 600A Transfer Switch does not have a Short Time Rating For existing transfer switch in the field, you may refer to the WCR nameplate attached to the transfer switch mechanism as reference.

If unsure, please contact Technical Support at 1-800-800-ASCO or send an email to technicalsupport@ascopower.com

Published for:ASCO Power Technologies USA