ABB Formula MCCB Selection Table

ABB Formula MCCB Selection Table

Ics = Rated service short-circuit breaking capacity
Ics = 50% Icu
Ics = 25% Icu
Example: For A2C 250
Icu =25kA, Ics = 50% Icu
Therefore, Ics = 12.5kA

Categories: , ,

Specification

MCCB Selection Table
Ics = 50% or 25% Icu

Rated CurrentIcu = Rated ultimate short-circuit breaking capacity
10kA16kA25kA36kA50kA
16A
20A
25A
32A		A1A 125
A1A 125
A1A 125
A1A 125		A1B 125
A1B 125
A1B 125
A1B 125		A1C 125
A1C 125
A1C 125
A1C 125		A1N 125
A1N 125
A1N 125
A1N 125		–
–
–
–
40A
50A
63A
80A		A1A 125
A1A 125
A1A 125
A1A 125		A1B 125
A1B 125
A1B 125
A1B 125		A1C 125
A1C 125
A1C 125
A1C 125		A1N 125
A1N 125
A1N 125
A1N 125		–
–
–
–
100A
125A
160A
200A		–
–
–
– 		A2B 250
–
–
–		A2C 250
–
–
–		A2N 250
A3N 400
A3N 400
A3N 630 		–
A3S 400
A3S 400
A3S 630
630A–––A3N 630A3S 630

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