Are optional lugs available for the HU365AWK, Series E5 (E05), to accept up to (3) 500 KCMIL conductors per phase?
Heavy Duty Safety Switches
Optional lugs required for three conductors per phase
The standard lugs provided on the 400A Heavy Duty Safety Switch will accept up to (1) #1/0 AWG - 750 KCMIL or (2) #1/0 AWG - 300 KCMIL AL/CU conductors per phase. No alternate lugs are available to accept (3) conductors per phase.
For a non-fusible application, consider using an 800A switch. The 800A Heavy Duty Safety Switch will accept up to (3) #3/0 AWG - 750 KCMIL AL/CU conductors per phase. Another option to consider would be to install a separate junction box ahead of the switch and use splitter blocks to splice down to the wire range that the switch will accept. The local AHJ (Authority Having Jurisdiction) should be consulted before considering the use of a separate junction box and splitter blocks or splices to assure that this option is acceptable to all applicable National, State or Local Code requirements.