Also confirming what Imran has said, the machines have thermal overload protection internally. As its required by the EU, its safe to assume all machines will have some level of protection. From what I've seen most seem to have Schneider TeSys IEC Overload Relays. Unfortunatley its usually kept under the "Warranty Void if Removed" panel (Illegal in the US under Magnuson-Moss) so not check-able without opening that can of worms if your machines under warranty still.
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-Karl
