Technical Parameters
Parameter Specification
Manufacturer ABB
Series / Family Emax E2N
Product Type Air Circuit Breaker (ACB), Withdrawable Horizontal Rear (WHR)
Configuration 3‑pole (three‑phase)
Rated Continuous Current (In / Iu) 800 A
Rated Operational Voltage (Ue) Up to 690 V AC
Rated Insulation Voltage (Ui) 1000 V AC
Rated Impulse Withstand Voltage (Uimp) ~8–12 kV
Trip Unit Type Electronic D‑LSI overcurrent protection
Protection Functions Long‑time (L), Short‑time (S), Instantaneous (I), Ground fault (G)
Short‑Circuit Breaking Capacity (Icu) High interrupting capability suitable for industrial networks
Service Short‑Circuit Breaking Capacity (Ics) Designed for service performance per low‑voltage distribution requirements
Short‑Time Withstand Current (Icw) Withstand levels for 1 s and 3 s duty
Rated Frequency 50 / 60 Hz
Connection Type Withdrawable with horizontal rear terminations (WHR)
Standards Compliance Meets international low‑voltage circuit breaker standards
Typical Applications Main distribution breaker, feeder protection in industrial/commercial switchgear
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.