MITSUBISHI ELECTRIC MR-J2S- A - Manual (Page 244)

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13. OPTIONS AND AUXILIARY EQUIPMENT
FR-BU2-30K
[Unit: mm]
129.5
5
59 18.5
Rating
plate
52
2- 5 hole
(Screw size: M4)
5
108
6 6 96
FR-BU2-55K
18.5
Rating
plate
52 72
5
142.5
5
6 158 6
170
2- 5 hole
(Screw size: M4)