The ABB E2S2000R2000PR123/LSIG 3P FHR is a sophisticated Emax 2 air circuit breaker designed for main power distribution, protection, and control in large commercial buildings, industrial plants, data centers, and critical infrastructure.

The ABB E3N 2500PR121/LSI 3P FHR is a state-of-the-art Emax 3 air circuit breaker designed for main protection, distribution, and intelligent control in the most demanding low-voltage power applications. It represents the latest generation of ABB's flagship ACB platform, offering enhanced performance, connectivity, and sustainability features in a compact footprint.

The ABB E4S4000 3PWMP is an Emax 4 air circuit breaker， representing the highest current and performance tier in ABB's low-voltage circuit breaker portfolio. It is engineered for ultra-high current main power distribution and protection in the largest and most critical electrical infrastructures, such as massive data centers, semiconductor fabs, steel plants, power generation facilities, and large commercial complexes.

The ABB E3N 2500 PR121/P‑LI 3‑pole air circuit breaker is a high‑capacity low‑voltage protective device from ABB’s SACE Emax / E3N series designed for industrial and commercial power distribution systems. It provides reliable protection of three‑phase electrical circuits against overcurrent, short circuits, and electrical faults. This breaker includes an electronic PR121/P‑LI overcurrent trip unit, auxiliary contacts for status signaling, and is offered in a withdrawable (W MP) configuration for ease of maintenance and serviceability within switchgear. This model is suitable as a main distribution or feeder protection breaker in power systems with high current demands.

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.

The ABB E4S4000R4000 PR121/LSIG 3‑pole WMP Air Circuit Breaker is a high‑capacity low‑voltage protective device from ABB’s SACE Emax E4S series designed for three‑phase industrial and commercial power distribution systems. It incorporates an electronic PR121/LSIG trip unit which provides adjustable protection for overloads, short circuits, and instantaneous faults. The unit is configured in a withdrawable (WMP) format, allowing the breaker to be easily inserted or removed from switchgear for maintenance without disturbing the main busbar connections. This breaker is suitable as a main distribution or feeder protection device in switchboards and electrical distribution installations where high reliability and fault clearing performance are required.

The ABB E4S4000 PR121/P‑LSIG 4‑pole WHR Air Circuit Breaker is a high‑capacity low‑voltage protection device from ABB’s SACE Emax E4S series designed for three‑phase industrial and commercial electrical distribution systems. It features a PR121/P‑LSIG electronic trip unit, which provides advanced adjustable protection against overloads, short circuits, instantaneous faults, and ground fault conditions. The breaker’s withdrawable (WHR) design allows safe extraction and servicing within a switchgear frame without disconnecting the main busbar connections. This unit is suitable for use as a main distribution feeder breaker, critical load protection, or industrial power system breaker where high reliability and protection performance are required.

The ABB E2N1600 PR122/P‑LSIG 3‑pole WHR Air Circuit Breaker is a high‑capacity low‑voltage protective device from ABB’s SACE Emax E2N series designed for industrial and commercial three‑phase power distribution systems. It integrates a PR122/P‑LSIG electronic trip unit that provides adjustable overcurrent protection including long‑time, short‑time, instantaneous and ground fault functions. The breaker is in a withdrawable (WHR) configuration, which allows the unit to be safely removed from the switchgear frame for maintenance or testing without disconnecting the main busbars. This breaker is suitable as a main distribution or feeder protection breaker in electrical panels and switchboards requiring robust protection and high performance.

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.

The ABB E4N3200 D LSIG 3‑pole WHR Air Circuit Breaker is a high‑current low‑voltage protective device from ABB’s SACE Emax E4N series designed for industrial and commercial three‑phase power distribution systems. It uses an electronic LSIG overcurrent trip unit to provide coordinated protection against long‑time overloads (L), short‑time faults (S), instantaneous short circuits (I), and ground faults (G). The breaker is configured with withdrawable (WHR) style connections, allowing the unit to be safely removed from its switchgear frame for maintenance or service without disconnecting the busbars. This breaker is well‑suited for use as a main distribution or feeder breaker in electrical switchgear, feeder panels, and power distribution systems requiring reliable high‑current protection.