Emax 2 Series Air Circuit Breaker, Emax 2 Series Air Circuit Breaker Fornecimento de fábrica-Zhejiang Zhongkong Electric Co., Ltd.

Emax 2 Series Air Circuit Breaker

The Emax 2 series air circuit breakers cover the full spectrum of power distribution needs with a frame rating of up to 6300A, evolving from traditional protective devices into comprehensive energy management platforms that integrate protection, measurement, control, and communication. Their unique energy control capabilities enable active load management and peak-shaving/valley-filling, significantly reducing electricity costs, while a compact design saves up to 20% of switchgear space. Equipped with Ekip Touch smart touch-screen trip units and supporting a wide range of industrial communication protocols, they enable full-lifecycle digital management—from local operations and maintenance to cloud connectivity.

📊 Overview of Key Parameter Comparisons

Comparison Dimensions						EMAX 2 (currently the top recommendation)
Product Model						E1.2, E2.2, E4.2, E6.2
Frame current (Iu)						Maximum 6300A (E6.2)
Rated voltage (Ui)						Maximum 1000V
Division ability (ICU)						More powerful , up to 200kA (E6.2 @ 440V)
Short-term tolerance (Icw)						Higher , up to 120kA/1s (E6.2)
Trip unit type						Ekip DIP (Dial Switch) , Ekip Touch (Touchscreen with Measurement/Communication), Ekip Hi-Touch (Enhanced Touchscreen)
Protection function						LI, LSI, LSIG, etc.
Smart functions						Supports : Power Controller, Power Quality Analysis, Cloud Module, IEC 61850 Communication Protocol
External dimensions						More compact: E1.2 (210mm wide) E4.2 (384mm wide)
Explanation of "Breaking Capacity Class": ABB uses letters to represent different breaking capacity classes, such as B (42kA), N (66kA), S (85kA), H (100kA), V (150kA), etc. For example, E2.2N represents a circuit breaker with an E2.2 frame and a breaking capacity of 66kA (N class).

Emax 2 series (new generation flagship model)
Model	Frame current Iu (A)	Disruption capacity Icu (440V, kA)	Short-time withstand current Icw (1s, kA)	Short-term tolerance Icw (1s, kA)	Number of poles	Extreme number	Fixed width (mm)
E1.2	630~1600	42~66	42~50	3P/4P	250	280	Minimum size, suitable for 300mm wide switch cabinets
E2.2	800~2500	42~100	42~85	3P/4P	400	400	Suitable for 400mm wide switch cabinets
E4.2	2000~4000	66~150	66~100	3P/4P	500	500	No special derating treatment required
E6.2	4000~6300	100~200	100~120	3P/4P	900	900	Maximum disruption capacity: 200kA
Segmentation levels: B=42kA, C=50kA, N=66kA, S=85kA, H=100kA, V=150kA, X=200kA

Model
E1.2B 630	E1.2C 630	E1.2N 630	E2.2S 800	E2.2H 800	E4.2V 2000
E1.2B 800	E1.2C 800	E1.2N 800	E2.2S 1000	E2.2H 1000	E4.2V 2500
E1.2B 1000	E1.2C 1000	E1.2N 1000	E2.2S 1250	E2.2H 1250	E4.2V 3200
E1.2B 1250	E1.2C 1250	E1.2N 1250	E2.2S 1600	E2.2H 1600	E4.2V 4000
E1.2B 1600	E1.2C 1600	E1.2N 1600	E2.2S 2000	E2.2H 2000	E6.2V 4000
E2.2B 1600		E2.2N 800	E2.2S 2500	E2.2H 2500	E6.2V 5000
E2.2B 2000		E2.2N 1000	E4.2S 3200	E4.2H 3200	E6.2V 6300
		E2.2N 1250	E4.2S 4000	E4.2H 4000
		E2.2N 1600		E6.2H 4000
		E2.2N 2000		E6.2H 5000
		E2.2N 2500		E6.2H 6300
		E4.2N 3200
		E4.2N 4000