Hi Vilma, it's Jack at Dyson.
All Dyson DC33 upright vacuums bought within the UK will include a standard replaceable 13 amp fuse within the plug. Dyson vacuums purchased in other markets may not include a fuse within the plug. However, most Dyson vacuums are protected by a thermostat engineered to shut the machine off for protection if it starts to overheat.
If your DC33 shut off while you were using it, it may have overheated due to a blockage, and the filter(s) may also be overdue for a wash. The vacuum should reset automatically after it's had at least 1-2 hours to cool down. Washing the filter(s) according to the User guide and removing any blockages should prevent this issue from reoccurring.
We're happy to talk you through some quick troubleshooting checks to help determine the cause of the issue, and to ensure your DC33 is working as well as it should be. You'd just need to give us a call on 0800 298 0298 (UK), 1-866-693-9766 (US), 1-877-397-6622 (CA) or 1800 239 766 (AU).
Videos on stoppages