"protective duties" is correct and usable in written English.
It is generally used to refer to taxes that are imposed on imported goods in order to protect domestic production of similar goods. For example, "The government imposed protective duties on imported steel to ensure that domestic steel production remained competitive."
The bacteria are noticed only when troublesome, but researchers now believe that in normal times they perform many protective duties.
Sensitive to these complaints, the Canadian government has long imposed protective duties on some Chinese exports, such as hot-rolled steel plate.
All around him were the steelworkers, pressing Mr. Bush to speed ahead with an investigation that could result in large, protective duties on steel from countries accused of "dumping" their products in the American market.
In addition to imposing additional tariffs on steel and aluminum from China and other countries, President Trump has threatened to put protective duties on other Chinese-made products worth $60 billion.
The government of Otto von Bismarck, German chancellor in the late 19th century, implemented protective duties on foodstuffs and manufactured goods (but kept free the importation of raw materials for use in industry).
Gottfried von Haberler in The Theory of International Trade (1937) suggested that the best way to distinguish between revenue duties and protective duties (disregarding the motives of the legislators) is to compare their effects on domestic versus foreign producers.
This force is assigned to everything from protective duty to counter-sniper teams, bomb squads and canine units.
Mr. Regan said the 13‐man campus security force would re main on protective duty and patrol the 138‐acre campus.
A purely protective duty tends to shift production away from the export industries and into the protected domestic industries or other industries producing substitutes for which demand is increased.
Left arm handles a protective duty during a fall.
They can only be used "to augment armed police officers engaged in protective security duties" and can only be authorised by a Cobra emergency meeting.
