ABB REX 521 - Page 4

4 Cutting Tool Operating Guide
2. Panel cut-out dimensions
There are two options to widen the existing cut-out: To the left or to the right depending of the switchgear lay-out
(free space on it).
Figure 2: Left cutting Figure 3: Right cutting
Figure 1: REX521RRP with REF615 replacement relay
C
A
B
C
A
B
A. 179 mm ± 1, new cut-out width
B. 136 mm ± 1, old cut-out width
C. 254 mm ± 1