Product Data Sheet 144X557 Replace "x" with 1, 2, or 3 for number of poles Power Terminal Block 420 Amps 600 Volts AC/DC Wire Range * * Line: (1) 600 kcmil - #4 AWG Load: (1) 600 kcmil - #4 AWG Electrical Ratings * * * * * 420 amps 600V per UL 1059 & CSA 22.2 No.158, Class B & C requirements Short circuit current ratings (SCCR): See SCCR section below for specifications. CU7AL - 75C 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: -40C to 150C (UL RTI) Connector: aluminum, tin plated Terminal set screws: aluminum, tin plated Connector mounting screws: steel, zinc plated RoHS compliant A Regal Brand www.marathonsp.com 1 Termination Specifications Line & Load Side Wire Size Torque Wires / Terminal Wire Class (UL) 1 600 - 400 kcmil 56.5 N*m (500 lbf*in) 1 B, C 350 - 2 56.5 N*m (500 lbf*in) 1 B, C, G, H, I (DLO) 4 56.5 N*m (500 lbf*in) 1 B, C (CU Stranded) * Aluminum wire range: 600 kcmil - #4 AWG * Wire strip length: 1 3/8 in. (35mm) * Terminal screw drive: 1/2 in. (13mm) hex 1 For information on copper stranded wire classes please visit: http://www.marathonsp.com/flexible-stranded-wire.php Short Circuit Current Ratings (SCCR) * * * The suitable conductor ranges are limited to the table values only for achieving the SCCR in excess of the default rating of 10,000A. Other conductor combinations within the "Terminal Specifications" noted are suitable for achieving a SCCR of 10,000A (the default rating of terminal blocks). Enclosure size - Investigated with a minimum 16x12x16 enclosure. Use in smaller enclosures is subject to end use evaluation. SCCR With Fuses Wire Class B, C B, C G, H, I (*) Suitable Conductors Max Overcurrent Protection Fuse Required Amp Rating / Class Line Load J T 600 - 2 600 - 2 350 - 2 600 - 4 600 - 2 600 - 2 350 - 2 600 - 4 600 400 400 600 400 400 RK1 RK5 400 200 400 200 None G 60 60 CC 30 30 SCCR RMS Sym. Amps 600V. Max 50,000 100.000 100,000 10,000 * Any wire class evaluated (see terminal specification section) www.marathonsp.com 2 PDS 0076 REV-F 1/12/18 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 specifications. Drawing www.marathonsp.com 3 PDS 0076 REV-F 1/12/18