The ABB E1N800 R800 PR121/P‑LSIG 3‑pole FHR Air Circuit Breaker is a low‑voltage protective device from ABB’s SACE Emax E1N series designed for three‑phase industrial and commercial power distribution systems. It features an electronic PR121/P‑LSIG trip unit that delivers adjustable protection against overloads, short‑time faults, instantaneous faults, and ground faults. This breaker is configured with fixed horizontal rear (FHR) connections, meaning it installs in a fixed position in switchgear or distribution panels and connects directly via rear terminals. It is suitable for use as a main distribution breaker or feeder breaker in switchboards where reliable electrical protection and coordination are required.
