Appendix A: Spreader Pads
Pad designation and
bottom view dimensions
Dim. H
Max.
Height
For use with the following:
ER411T, J411T, ER412, ER412D
ER412DD, J412, J412D, J412DD
ER412T, J412T
.370 [9.4]
MAX SQ
.388 (9.86)
.393 (9.99)
.493 (12.52)
.503 (12.78)
.100
[2.54]
Dim
MAX
H
712, 712D, 712TN
.150
[3.81]
.014
[0.36]
(REF)
ER431T, J431T, ER432, ER432D
ER432DD, J432, J432D, J432DD
ER432T, J432T
.300
[7.62]
.100
[2.54]
732, 732D, 732TN
.370
[9.4]
MIN
ER420, J420, ER420D, J420D
ER420DD, J420DD, ER421, J421
ER421D, J421D, ER421DD
.200
[5.08]
.398 (10.11)
J422D, ER422DD, J422DD, 722
“M” Pad 5/ 6/
.390 [9.91]
SQ
ER411T
.100
[2.54]
ER412, ER412D, ER412DD
J412, J412D, J412DD
.441 (11.20)
.100
[2.54]
.150
[3.81]
Dim
MAX
H
712, 712D
.451 (11.46)
.451 (11.46)
.300
[7.62]
ER421, ER421D, ER421DD
722, 732D
ER431T
ER432, ER432D, ER432DD
.130
[3.3]
.150
[3.81]
.546 (13.87)
.556 (14.12)
.300
[7.62]
732, 732D
“M2” Pad 7/ 8/
ER411, ER411D, ER411DD
ER411TX
ER412X, ER412DX, ER412DDX
ER412TX
.388 (9.86)
.393 (9.99)
.398 (10.11)
.370 [9.4]
MAX SQ
.100
[2.54]
712X, 712DX, 712TNX
Dim
MAX
H
ER420X, ER420DX, ER420DDX
ER421X, ER421DX, ER421DDX
ER422X, ER422DX
.150
[3.81]
.014
[0.36]
(REF)
.300
[7.62]
.100
[2.54]
ER422DDX, 722X, 722DDX
.370
[9.4]
MIN
ER431, ER431D, ER431DD
ER431TX
.200
[5.08]
.493 (12.52)
.503 (12.78)
ER432X, ER432DX, ER432DDX
ER432TX
“M3” Pad 5/ 6/ 9/
732X, 732DX, 732TNX
Notes:
1. Spreader pad material: Diallyl Phthalate.
2. To specify an “M”, “M2” or “M3” spreader pad, refer to the mounting variants portion of the part number example
in the applicable datasheet.
3. Dimensions are in inches (mm).
4. Unless otherwise specified, tolerance is ± .010” (0.25).
5/. Add 25 mΩ to the contact resistance shown in the datasheet.
6/. Add .01 oz. (0.25 g) to the weight of the relay assembly shown in the datasheet.
7/. Add 50 mΩ to the contact resistance shown in the datasheet.
8/. Add 0.025 oz (0.71 g) to the weight of the relay assembly shown in the datasheet.
9/. M3 pad to be used only when the relay has a center pin (e.g. ER411M3-12A, 722XM3-26.)
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