model 400af (400 series)

model 400af (400 series)

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400 series  No-fuse circuit breaker - MCCB

 框架容量 AF A 400
 型式 Type   400-EK 400-SK 400-HK
 極數 Poles P 2 3 2 3 4 2 3
 額定絕緣電壓 Ui VAC 690
 額定電壓 Ue VAC 600
 額定電流 In A 250、300、350、400
 額定起斷容量 (kA)
 Icu / Ics
 IEC 60947-2
220V 35/18 50/25 85/35
380V 25/13 30/15 50/20
440V 18/9 25/13 50/20
600V 15/8 20/10 30/15
 CNS 2931
220V 40/35 60/50 100/85
380V 30/25 35/30 60/50
440V 20/18 30/25 60/50
500V 16/15 22/20 35/30
 跳脫方式 Tripping   熱動 - 電磁式 thermal-magnetic

 尺寸 (mm)

a 140 184 140
b 257
c 103
d 155
aa 44
bb 194
 重量 Wt. kg 4.9 5.7 4.9 5.7 7.5 4.9 5.7



With a frame capacity of 400AF, the 400 Series comprises various types: the 400-EK, the 400-SK, and the 400-HK. These types are available in 2, 3, and 4 poles, allowing for flexible configuration based on specific requirements.

The 400 Series is designed to operate within a rated insulation voltage (Ui) of 690V, ensuring safe and efficient electrical performance. It has a rated voltage (Ue) of 600V, making it suitable for a wide range of electrical systems.

The rated current (In) options for the 400 Series include 250A, 300A, 350A, and 400A. These different current ratings allow for precise selection to meet the specific load demands of various applications.

For rated breaking capacity (kA), the 400 Series exhibits different values depending on the voltage level. At 220V, the 400-EK has a rating of 35/18kA, the 400-SK has a rating of 50/25kA, and the 400-HK offers 85/35kA. At 380V, the ratings are 25/13kA for the 400-EK, 30/15kA for the 400-SK, and 50/20kA for the 400-HK. These breaking capacities ensure reliable protection against overloads and short circuits.

Product Image

400EK front

400EK side


400EK sideR