This is an n8n community node. It lets you to throttle the execution of workflows.
It provides a Throttle note that routes items either to the Allowed or Blocked output depending on the configured throttling timeout.
Note: This node will only block executions if workflow is triggered by a webhook or any other automated trigger.
It will allow all executions if the workflow is triggered manually.
This is due to N8N internal restrictions.
It could be combined with Wait node to retry the execution of the workflow after some time:
Or it could be combided with Error node to terminate the workflow execution.
Follow the installation guide in the n8n community nodes documentation.