I think that is among the purposes of the requirement that all equipment have CSA approval for the purpose for which it is used. Disconnection time would be dealt with in the standard for the approval of the overcurrent devices.
If you intend to export a piece of equipment to Canada, to get CSA certification, all components must be CSA approved. If certification is to be obtained after the equipment arrives in Canada, all non-approved components must be replaced. This includes fuses and breakers.
