The ABB E2.2N 3‑pole Air Circuit Breaker is a low‑voltage protective device from ABB’s SACE Emax 2 E2.2N series designed for industrial and commercial three‑phase power distribution systems. It provides reliable overcurrent protection for electrical circuits and helps safeguard against overloads, short circuits and fault conditions when used with an appropriate electronic trip unit. The breaker series supports robust construction, high interrupting capacity, and flexible configuration options for fixed or withdrawable installations in switchgear and distribution panels. E2.2N breakers are suited for use as main distribution breakers or feeder protection breakers in power distribution networks.