Its ETU330 trip unit with LIG (long-time, instantaneous, ground) functions covers In=250A, with overload pickup adjustable from 100A to 250A and short-circuit pickup from 1.5 to 12 times In. Ground-fault protection is settable from 0.2 to 1 times In with a time delay of 0.1 or 0.3 seconds.
The nut keeper kit secures the breaker in place during high-vibration environments. Two auxiliary switches HQ are factory-fitted, providing status feedback for remote monitoring or PLC inputs — useful for a maintenance technician verifying breaker position without opening the panel door.