The Industry’s Highest 3-Cycle Closing and Withstand Ratings
Russelectric® transfer switches have the highest 480 VAC 3-cycle closing and withstand ratings of any switches available today.
Russelectric RTS-03, 3 Cycle-Rated Automatic Transfer Switches are available in the following versions:
Russelectric RMT automatic transfer switches have been fully tested for 3-cycle closing and withstand ratings of under UL-1008.
Before Underwriters’ Laboratories, Inc. will allow a transfer switch to be listed with a short circuit rating, it requires that the switch be able to close in on the same amount of fault current as it can withstand. Consequently, in applications where extremely high short circuit current is available, fuse protection is mandatory.
When coordinated with current limiting fuses, Russelectric RTS-03 transfer switches have closing and withstand ratings of 200,000 amperes.