As simple as 1,2,3 | Archive Titles

Table 1: Section of data extracted from table ZA1 BS EN 60898 permissible I2t (let through) values for circuit-breakers with rated current up to and including 16 A.
Rated short circuit breaking capacity	Energy limiting class	Type	I2t maximum A2S
6000	1	B and C	No limits specified
6000	2	C	120 000
6000	3	C	42 000
10 000	2	C	290 000
10 000	3	C	84 000

Table 2: Minimum and maximum fault currents
Fault current (kA)	Operating time from manufacturer (mS)	I2t let-through from manufacturer (A2S)	I2t let-through energy-limiting class 3 BS EN 60898 (A2S)
Minimum 3	10	9100
Maximum 10	5		84 000