ACQ550-U1 User’s Manual 293
Technical data
Dimensions and weights
The dimensions and mass for the ACQ550 depend on the frame size and enclosure 
type. If unsure of the frame size, first, find the “Type” designation on the drive labels 
(see sections Type designation on page 13 and Drive labels on page 12). Then look 
up that type designation in the rating tables (see chapter Technical data, page 267), 
to determine the frame size.
Mounting dimensions
IP21 / UL type 1 and IP54 / UL type 12 – Dimensions for each frame size
Ref.
R1 R2 R3 R4 R5 R6
mm
in mm in mm in mm in mm in mm in
W1
1
98.0 3.9 98.0 3.9 160 6.3 160 6.3 238 9.4 263 10.4
W2
1
-- -- -- -- 98.0 3.9 98.0 3.9 -- -- -- --
H1
1
318 12.5 418 16.4 473 18.6 578 22.8 588 23.2 675 26.6
a 5.5
0.2 5.5 0.2 6.5 0.25 6.5 0.25 6.5 0.25 9.0 0.35
b 10.0
0.4 10.0 0.4 13.0 0.5 13.0 0.5 14.0 0.55 18.0 0.71
c 5.5
0.2 5.5 0.2 8.0 0.3 8.0 0.3 8.5 0.3 8.5 0.3
d 5.5
0.2 5.5 0.2 6.5 0.25 6.5 0.25 6.5 0.25 9.0 0.35
1
  Center to center dimension.
X0032
b
H1
See detail A
a
W1
See detail B
W2
c
d
Detail B
Detail A