Its 3-pole construction and adjustable thermal-magnetic or electronic trip range from 95 A minimum to 756 A maximum allow it to protect feeders and large branch circuits across a wide ampacity window.
At 690 V AC the breaker interrupts 52.5 kA, and at 500 V AC it handles 220 kA — figures that support selective coordination with downstream 25 kA or 36 kA rated branch breakers without cascading. The ETU850 trip unit provides communication and other measurement functions, enabling power monitoring and remote trip indication for predictive maintenance and energy management integration.