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Circuit Breaker for Industrial Wiring
Model 400AF (400 Series)
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.
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