What max_execution_time does Magento 2 set?

Magento 2 sets its max_execution_time to 18.000 seconds (5 hours):

When the time limit is disabled?

Magento 2 disables its time limit (i.e. grants itself the permissions to take unlimited time) for the following operations:

1. Products import and export

2. Currency rates import

3. A backup creation

4. A backup rollback

See also: