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.

The ABB E2N800 D‑LSI 3‑pole WHR Air Circuit Breaker is a low‑voltage protective device from ABB’s Emax E2N series designed for three‑phase industrial and commercial power distribution systems. It features an electronic D‑LSI trip unit that provides coordinated protection against overload (L), short‑time faults (S), instantaneous short circuits (I), and ground faults (G). The breaker is configured in a withdrawable horizontal rear (WHR) format, allowing it to be safely extracted from a switchgear frame for maintenance or service without disconnecting the main busbars. This model is suitable as a main distribution breaker or feeder breaker in electrical switchgear and panel installations where reliable, adjustable protection and easy maintenance are required.

The ABB E1N800 D‑LSI 3‑pole WHR Air Circuit Breaker is a low‑voltage protective device from ABB’s Emax E1N series, designed for three‑phase industrial and commercial power distribution systems. It incorporates an electronic D‑LSI overcurrent trip unit, which provides adjustable protection against overloads (L), short‑time faults (S), instantaneous short‑circuit conditions (I), and ground faults (G). The breaker is configured in a withdrawable horizontal rear (WHR) design, allowing easy extraction from switchgear for maintenance or servicing without disconnecting the main busbars. This model is suitable for use as a main distribution breaker or feeder breaker in electrical switchgear and distribution panels.

The ABB SACE E2.2S‑A 1600 A 3‑pole Air Circuit Breaker is a low‑voltage industrial protective device from the ABB SACE Emax 2 E2.2 frame series. It is designed to protect three‑phase electrical power distribution systems against overloads, short circuits, instantaneous faults, and ground faults when fitted with the appropriate electronic trip unit. This breaker is typically used as a main distribution breaker or feeder protection device in switchgear and electrical panels in commercial and industrial installations. This specific variant is a fixed installation with rear horizontal connections (FHR).

The ABB E1.2B 1250 Ekip Dip LI 3‑Pole Air Circuit Breaker is a heavy‑duty low‑voltage protective device from ABB’s SACE Emax 2 E1.2B series designed for three‑phase industrial and commercial power distribution systems. It incorporates an Ekip DIP electronic trip unit with LI protection, providing adjustable long‑time and instantaneous overcurrent protection. This breaker model is typically supplied in a withdrawable (WMP) version, allowing the unit to be easily inserted or removed from switchgear for maintenance without disconnecting the main busbars. It is suitable as main distribution or feeder protection in electrical panels, switchgear, and distribution boards.

The ABB E4S4000 PR121/P‑LSIG 4000 A 3‑pole WHR Air Circuit Breaker is a high‑capacity low‑voltage protection device from ABB’s SACE Emax E4 series designed for industrial and commercial three‑phase electrical distribution systems. It includes an electronic PR121/P‑LSIG trip unit, which provides adjustable protection for overloads, short‑time faults, instantaneous short circuits, and ground faults. The breaker has a withdrawable design (WHR) so it can be safely inserted and removed from switchgear without disconnecting the main busbars, facilitating maintenance and servicing. It is suitable for use as a main distribution breaker or feeder protection breaker in switchboards, switchgear, and power distribution panels.

The ABB SACE E2.2N 3‑pole Air Circuit Breaker is a low‑voltage protective device in ABB’s Emax 2 E2.2N series designed for industrial and commercial power distribution applications. It provides reliable protection for three‑phase electrical circuits by interrupting current under overload, short‑circuit, instantaneous and ground‑fault conditions when equipped with the appropriate electronic trip unit. The breaker can be configured in fixed or withdrawable forms and supports a variety of electronic protection modules (such as Dip LI, LSIG, Touch LSIG, etc.) to suit different network coordination requirements. These breakers are typically installed as main or feeder protection elements in switchgear, power panels, and distribution boards.

The ABB PR121/P is a digital electronic trip unit designed for use in ABB SACE Emax low‑voltage air circuit breakers. It provides adaptive and adjustable protection against multiple types of overcurrent faults in three‑phase AC power distribution systems. The PR121/P trip unit integrates easily into compatible breakers and allows the user to configure protection settings via front‑panel DIP switches or interface LEDs. It is suitable for use in industrial and commercial electrical panels to protect circuits against overload, short‑time faults, instantaneous short circuits, and optionally ground faults. It is typically paired with breakers rated for In = 1250 A and is often powered by a 220–240 V AC auxiliary/control supply for its internal electronics and signaling functions.

The ABB PR122/P‑LSI is an electronic overcurrent protection trip unit designed for use in ABB’s low‑voltage air circuit breakers (ACBs). It provides adjustable and coordinated protection for three‑phase power distribution systems by detecting and interrupting abnormal current conditions. The PR122/P‑LSI unit integrates long‑time (L), short‑time (S), instantaneous (I), and ground fault (G) protection functions, enabling flexible setting ranges for system coordination and selective fault clearing. It is suitable for industrial, commercial, and utility electrical installations where reliable protection and tuning are required. The “3P” designation indicates protection in three polar phases (typically three‑phase systems).

ABB Emax 2 low-voltage air circuit breaker, configured with a fixed mounting (FIXED), 1250A frame, and equipped with the advanced PR121/P electronic trip unit. This device is designed for main protection and distribution in medium to large-scale electrical installations such as industrial plants, commercial buildings, and infrastructure projects.