Marathon Special Products 143X559 Data Sheet
SCCR, RMS
Product Data Sheet
143X559
Replace “X” with 1, 2 or 3 for number of poles
Power Splicer/Stud Block
310 Amps, 600 Volts
See tables below for SCCR wire ranges,
flexible stranded and multiple wire approvals.
Wire Range:
Line side: (1) 350kcmil - #6 AWG
Load Side: 3/8 – 16 x 1 1/8” stud
Electrical Ratings:
• 310A Copper wire, 250A Aluminum wire (Based on NEC Table 310-16, 75°C columns)
• 600 Volts AC/DC (UL 1059 Class C, User Group - General Industrial)
• Factory and Field Wiring
• Studs intended for use with listed crimp/compression lugs.
Short Circuit Current Ratings (Copper wire only):
Suitable Conductors Overcurrent Protection Fuse Required
(kcmil/AWG) Class/Max Amp Rating
Line Load J T RK1 RK5 G CC
350 - 4 350 - 4 400 400 400 100 60 30 65,000 600
Mechanical Ratings:
• Maximum insulator base temperature: 150°C (302°F) UL RTI
• Storage and transportation temperature range: -35°C to 125°C (-31°F to 257°F)
• Flammability rating of insulator base: UL 94 V-0
**** Use outside these ratings needs to be judged in the end-use application
Materials:
• Connector: High conductivity aluminum, tin plated
• Insulator base: phenolic
• Terminal set screws: Aluminum, tin plated
• Threaded stud: brass, tin plated
• Connector mounting screws: Steel, zinc plated
(AC/DC)
SYM Amps Max
Volts
• Hex nut: brass, nickel plated (1 supplied per stud)
Copper Wire Stranding Classes - Number of Strands
Wire Size
Torque
Solid
Class B
Class C
Class G
Class H
Class I
Class K
350 kcmil
275 in. lbs
37
61
300
275 in. lbs
37
61
250
275 in. lbs
3761~ 259
~ 427
~ 637
~ 2499
4/0
275 in. lbs
1937~ 133
~ 259
~ 532
~ 2107
3/0
275 in. lbs
1937~ 133
~ 259
~ 418
~ 1666
2/0
275 in. lbs
1937~ 133
~ 259
~ 342
~ 1323
1/0
275 in. lbs
1937~ 133
~ 259
~ 266
~ 1064
1
275 in. lbs
1937~ 133
~ 259
~ 210
~ 836
2
275 in. lbs
719~ 49
~ 133
~ 161
~ 665
4
275 in. lbs
7
19
6
275 in. lbs
7
19
Agency Approvals:
• UL Recognized, UL 1059 Terminal Block Standard, File No. XCFR2.E62806
• CSA Certified, CSA C22.2 No. 158, File No. LR19766 (Wire Classes B & C only)
• CE compliant to IEC 60947-7-1
• RoHS Compliant
Wire Approvals:
Line Side Wire Approvals:
~Quantity of strands for Classes G, H, I, K may vary by manufacturer.
Aluminum stranded wire range: 350 – #6 AWG
Load Side Wire Approvals:
3/8 - 16 x 1 1/8” long threaded studs to accept Listed ring lugs or buss bar.
Hex nut: 9/16” Across flats, torque to 192 in. lbs.
• Wire strip length, line side tap – 1.0”
• Hex key required: line side - 5/16”
• Panel mountable: #10 fastener, torque to 25-30 in. lbs.
Accessories:
•
Cover: Clear protective plastic cover. Catalog description CC143X (“X” numbers of
poles: 1,2 or 3)
• Marking strip: White vinyl strip to mark circuits. Supplied with mounting screws.
• Printing available. Consult factory.
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