A national protest is expected to take place on Thursday, with the participation of most of the country's political parties and groups, including the powerful Labor Union UGTT, which has a large popular base.
Demonstrations will also take place on Friday, as Hamas leaders called for a day of support throughout the Arab world.
"In an abundance of caution, the embassy is closed to the public for routine services on Thursday, October 12 and Friday, October 13," the embassy said in a statement, adding that it is not aware of specific or credible threat at this time.
The planned protests follow Israeli reprisal strikes on blockaded Gaza that have killed 1,100 people and wounded 5,339 after Hamas militants killed at least 1,200 Israelis, mostly civilians, in a rampage after breaching the fence enclosing Gaza on Saturday.
In 2012, hundreds of protesters attacked the U.S embassy in Tunis, over a film denigrating the Prophet Mohammad, an attack in which Tunisian police killed four protesters.
(Reporting by Tarek Amara; Editing by Bill Berkrot)
