Product Data Sheet
A Regal Brand
www.marathonsp.com 1
144X575
Replace “x” with 1, 2, or 3 for number of poles
Power Terminal Block
380 Amps 600 Volts AC/DC
Wire Range
• Line: (1) 500 kcmil - #4 AWG
• Load: (1) 3/8 - 16 X 1 5/16 stud
Electrical Ratings
• 380 Amps
• 600V per UL 1059 & CSA 22.2 No.158, class B & C requirements
• SCCR of 10,000 A (default for terminal blocks)
• CU7AL - 75°C connector terminal rating with copper or aluminum wire
• Factory & Field Wiring
Agency Compliance
• UR - UL Recognized Terminal Block, Evaluated to UL 1059, File No.XCFR2.E62806
• CSA - certifed to C22.2 No. 158, File No. LR19766 (wire classes B & C only)
• CE compliant to IEC 60947-7-1
Material Information
• Insulator base:
• Phenolic
• Flammability rating of insulator base UL94V0
• Insulator base temperature rating: -40°C to 150°C (UL RTI)
• Connector: aluminum, tin plated
• Threaded stud: brass, tin plated
• Nuts: brass, nickel plated
• Terminal set screws: aluminum, tin plated
• Connector mounting screws: steel, zinc plated
• RoHS compliant
www.marathonsp.com 2PDS 0144 REV-G 1/12/18
Termination Specications
Load Side Termination
Type Torque Stud Length Maximum
Lug/Bar Width
Listed lugs on
3/8 - 16 studs
21.7 N·m
(192 lbf·in)
1 5/16”
(33mm)
1.50”
(38mm)
• For use with conductors prepared with listed connectors such as single hole compression/crimp lugs or
listed ring, fork or spade terminals.
• Conductor size, ampacity, temperature rating and type are dictated by the ratings of the listed lugs utilized
and applicable code requirements.
• Aluminum wire range: 500 kcmil - #4 AWG
• Wire strip length: 1 1/4in. (32mm)
• Terminal screw drive: 3/8 in. (8mm) hex
Line Side Wire Size
(CU Stranded) Torque Wires /
Terminal Wire Class (UL) 1
500 kcmil 42.4 N·m (375 lbf·in) 1 B, C
400 - 2 42.4 N·m (375 lbf·in) 1 B, C, G, H, I (DLO)
4 42.4 N·m (375 lbf·in) 1 B, C
1 For information on copper stranded wire classes please visit:
http://www.marathonsp.com/exible-stranded-wire.php
www.marathonsp.com 3PDS 0144 REV-G 1/12/18
Drawing
Installation & Accessories
• Mounting (Panel):
• For use with #10 fastener.
• Torque mounting fastener to 25-30 lbf·in (2.8 - 3.4 N·m).
• Covers:
• Flat covers available upon request
• Catalog Number: CC 144x (replace “x” with number of poles)
• Covers are clear polycarbonate
• Accessory covers are not intended to provide insulation for electrical spacings.
• Marker Strip: white vinyl strip with mounting screws available.
• Printing options available, consult customer service for specications.
