The ABB E3H 800 PR121/P‑LI 3‑pole W MP Air Circuit Breaker is a high‑performance low‑voltage protective device from ABB’s SACE Emax / E3H series designed for industrial and commercial three‑phase power distribution systems. It is configured as a withdrawable (W MP) breaker, allowing easy removal and maintenance without disconnecting busbar connections. This model includes an electronic PR121/P‑LI overcurrent trip unit, providing comprehensive protection against overloads and short circuits. It is suitable for use as a main distribution breaker, feeder breaker, or critical system protection component in switchgear assemblies.
