Marathon Special Products has been an industry leader in
electrical/electronic components designed for circuit protection
and connection applications for over 60 years.
We are pleased to introduce our new Motor Terminal Blocks.
The new motor blocks provide a systematic method to wire
electrical motors in the motor’s junction box and allow for
circuit management.
These blocks allow for much easier circuit testing and
motor replacement over the traditional method of bolts, nuts
and insulation. The motor terminal block links can be
assembled for either wye or delta wiring configurations.
These blocks offered by Marathon Special Products are the
only Motor Terminal Blocks with up to 1,000V rating and are
available in amperages up to 520A. To achieve these ratings,
wires need to be terminated with UL Listed crimp lugs.
Motor Terminal BlocksMotor Terminal Blocks
ELECTRICAL/MECHANICAL
•Insulatorbase,highstrengthpolyester
(130oCandUL94V-0)
•35to520Amps
•Upto1000Volts
•Studsandhardware,steel,zincplated
•Terminallinks,copper,nickelplated
•Terminallinks&hardwareprovidedassembled
CERTIFICATIONS
•ULRecognizedFileNo.XCFR2.E62806
•ULInvestigatedtoCSA22.2No.158,
FileNo.XCFR8.E62806
•ULInvestigatedtoIEC60947-7-1,
FileNo.XCHG2.E243117,IEC60947-7-1
•ULInvestigatedtoSANS1804-2
•RoHSandREACHCompliant
The majority of Marathon’s products have been tested and comply to UL
requirements for use with flexible stranded wires, have short-circuit current
ratings (SCCR) and are CE 1000 Volt AC/DC rated. Marathon’s short lead times,
technical support, and excellent customer service ensure you receive a quality
product as quickly as possible. Please visit www.marathonsp.com for detailed
datasheets and specific product information. You can also call (419) 352-8441 or
email us at marketing@marathonsp.com.
Shown left to right: ST750M8 and ST750M12
Motor Terminal Block application
A
B
F
E E
L
JK
Ref.
C
ØHØG
I
D
Thread
FIGURE 1:
A
B
E E
F
ØG
J
L
K
M
Ref.
C
D
I
Thread
FIGURE 2:
For electronic drawings or 2D/3D CAD data, submit request at www.marathonsp.com/drawings.html
13300 Van Camp Road P.O. Box 468 Bowling Green, Ohio 43402
Phone: (419) 352-8441 Fax: (419) 352-0875 marketing@marathonsp.com
www.marathonsp.com
Motor Terminal Blocks
16.5
18.3
20.0
25.0
34.3
43.0
55.0
40.9
52.9
Catalog
Number
ST755M4
ST750M4
ST755M5
ST750M6
ST750M8
ST755M10
ST755M12
ST750M12
ST750M16
FIG
55.0
63.0
68.0
85.0
112.0
140.0
170.0
179.2
201.3
Description
One piece base
with risers
Two piece base
1
2
33.0
36.5
40.0
50.0
68.5
86.0
110.0
167.0
191.0
43.0
42.0
45.0
62.0
76.0
91.0
97.0
107.0
133.0
16.0
16.5
20.0
27.0
32.0
45.0
45.0
51.0
67.0
20.0
26.5
25.0
30.0
40.0
50.0
60.0
69.7
75.7
20.0
26.5
25.0
30.0
40.0
50.0
60.0
133.2
151.3
6.0
5.8
5.9
7.0
9.0
9.0
11.2
11.0
11.0
10.0
10.0
10.0
12.0
15.3
15.3
18.0
N/A
N/A
20.0
9.0
18.0
23.6
31.0
30.5
28.0
12.0
12.0
22.0
26.5
25.0
30.0
40.0
50.0
60.0
85.3
85.3
16.5
18.3
21.5
27.5
36.0
45.0
55.0
47.0
58.0
A B C D E F G H I J L
N/A
N/A
N/A
N/A
N/A
N/A
N/A
85.3
85.3
K M
Thread
Size
M4 x 0.7
M5 x 0.8
M6 x 1.0
M8 x 1.25
M10 x 1.5
M12 x 1.75
M16 x 2.0
ARegalBeloitCompany
Catalog
Number
ST755M4
ST750M4
ST755M5
ST750M6
ST750M8
ST755M10
ST755M12
ST750M12
ST750M16
Voltage Wire Range (mm)
Max. Min.
#8 AWG
#8 AWG
#8 AWG
#2 AWG
2/0 AWG
3/0 AWG
250 kcmil
400 kcmil
(2) 300 kcmil
+UL Voltage Classes - C = General Industrial; E = Terminal Blocks rated 601-1500V
+CSA Voltage Classes - C = General Industrial
All blocks include links and hardware assembled
Amperage
UL/CSA IEC
38A
35A
50A
101A
160A
185A
242A
315A
520A
50A
50A
50A
121A
185A
217A
271A
374A
520A
Stud
Size
M4
M4
M5
M6
M8
M10
M12
M12
M16
UL/CSA+IEC Sans 1804
300V (C/C)
1000V (E/C)
600V (C/C)
1000V (E/C)
1000V (E/C)
1000V (E/C)
1000V (E/C)
1000V (E/C)
1000V (E/C)
630V
1000V
800V
1000V
1000V
1000V
1000V
1000V
1000V
250V
1100V
660V
1100V
1100V
1100V
1100V
1100V
1100V
#18 AWG
#18 AWG
#16 AWG
#14 AWG
#12 AWG
#8 AWG
#8 AWG
#8 AWG
(2) #2 AWG
Style
One piece
One piece
One piece
One piece
One piece
One piece
One piece
Two piece
Two piece