Bonding and Grounding - Communication (CA12005E)
Connectors –Ground Blocks
GROUND BLOCKS (CONTINUED)
At a glance . . .
PART NUMBER
POSITIONS
DIMENSIONS
MOUNTING HOLES
MOUNTING HOLE SPACING
SCREWS
LISTING
EM-4200-7-0
1⁄2" x 1⁄2" x 3-3⁄4"
7
.25"
3-1/4"
Allen
none
EM-4201
3⁄8" x 1⁄2" x 2-1⁄4"
3
#8–32
1-3/4"
Headless set screws
none
EM-4201-5S
3⁄8" x 1⁄2" x 4"
5
.219"
3-1/2"
Hex head
none
EM-4201-12S
3⁄8" x 1⁄2" x 8"
12
.220"
7-1/2"
Hex head
none
EM-4202
9⁄16" x 9⁄16" x 2-7⁄8"
3
#10–32
2-3⁄8", 1-15⁄16"
Headless set screws
none
EM-4203
3⁄8" x 1⁄2" x 2-1⁄2"
4
#10–24
1-3/16"
Headless set screws
none
EM-4204
3⁄8" x 3⁄4" x 3"
4
#10–24
1-1/2"
Brass hex head
none
EM-4204-6BOH
3⁄8" x 3⁄4" x 4-1⁄2"
6
#10–32
1-1/2"
Tin-plated brass hex head
none
EM-4250-8H
3⁄8" x 1⁄2" x 6-3⁄4"
8
#10–24
3-1/2"
Hex cap
none
EM-4250-8HAS
3⁄8" x 3⁄4" x 6-5⁄8"
8
1/4"
5-7/8"
Hex cap
none
EM-4250-3SSO
3⁄8" x 1⁄2" x 2-1⁄4"
3
#8–32
1-3/4"
Stainless steel oval point
UL
EM-4250-5BOH
3⁄8" x 1⁄2" x 4"
5
.219"
3-1/2"
Brass hex head
none
EM-4251-7-BOH
1⁄2" x 1⁄2" x 4-1⁄2"
7
1/4"
4"
Brass hex head
none
EM-4251-7-SS-O
1⁄2" x 1⁄2" x 3-3⁄4"
7
1/4"
3-1/4"
Oval point, Allen
UL
EM-4254-12
5⁄16" x 7⁄16" x 4-7⁄16"
12
#10
4"
Oval point, stainless, slotted
none
EM-4255-4BOM
3⁄8" x 3⁄4" x 3"
4
#10–32
1-1/2"
Brass hex head
none
CUSTOM GROUND BLOCKS
EM-4250-XYZ
Ground block made from 3⁄8" x 1⁄2" material: X = number of positions (1–24) Y = material of set screw (B = brass, S = steel, SS = stainless) Z = type of point on set screw (O = oval, C = cup)
BONDING &
GROUNDING
LISTED 84D8
EM-4252-XYZ
Ground block made from 9⁄16" x 9⁄16" material, UL listed: X = number of positions (1–24) Y = material of set screw (B = brass, S = steel, SS = stainless) Z = type of point on set screw (O = oval, C = cup)
For Electric Motion Company (EMC) part numbers starting with “EM” please contact EMC customer service at 860-379-8515 or cs110@hubbell.com
Page G54 | August 2022
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