node utilization is a calculation that includes cpu and is the closest you can get when setting up thresholds. the raw cpu usage is not available by itself.
https://docs.netapp.com/us-en/active-iq-unified-manager/performance-checker/reference_what_performance_metrics_can_be_monitored_using_thresholds.html#available-performance-counters
Node Utilization Average percentage of the node’s CPU and RAM that is being used.
the system defined threshold for node utilization is part of the performance capacity used threshold now, so it should be nodes using 100% of their performance capacity for more than 12 hours.
you can create a user defined threshold for the node utilization if you'd like that stat with your own thresholds instead of the perf capacity used.
what we have on the system-defined thresholds is here.
https://docs.netapp.com/us-en/active-iq-unified-manager/performance-checker/reference_types_of_system_defined_performance_threshold_policies.html#cluster-threshold-policies