Can a 600Vac rated safety switch be used on a 240Vac system?
Heavy Duty Safety Switch
Using higher rated switch on lower voltage system.
Yes, there is no reason that a 600Vac switch cannot be used on 240Vac system. If the switch is fusible, 600Vac fuses must be used as the 250Vac size of fuse would not fit in the 600Vac switch fuse spacing.