Marathon Special Products Power Distribution Blocks

Power Terminal Blocks are available in eight molding sizes. They are identified by the first three digits of the catalog number. The 140x, 142x, 143x, 144x and 145x series are manufactured with general purpose phenolic rated at 150° C. The 141x, 132x, and 133x series are manufactured with high impact thermoplastic rated at 125°C.
All Power Terminal Blocks are UL recognized file number XCFR2.E62806 and CSA certified file number LR19766, unless noted.
Connector Wire Hole Size: Conductor Opening.....Diameter of Opening #10-18 . . . . . . . . . . . . . . . . . . . . . . . . . . .158in #4-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . .250in #2-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . .312in #2/0-14 . . . . . . . . . . . . . . . . . . . . . . . . . . .438in 250kcmil-6 . . . . . . . . . . . . . . . . . . . . . . . .630in 350kcmil-6 . . . . . . . . . . . . . . . . . . . . . . . .718in 400kcmil-6 . . . . . . . . . . . . . . . . . . . . . . . .769in 500kcmil-4 . . . . . . . . . . . . . . . . . . . . . . . .875in 600kcmil-2 . . . . . . . . . . . . . . . . . . . . . . . .938in

General Specifications

600 Volts AC/DC
Connector, High Conductive Aluminum, Tin Plated, Rated for Copper and Aluminum Wire
CU Connector, High Conductive Copper, Tin Plated, Rated for Copper Wire Only
Amp Rating Based on NEC Table 310-16 Using 75°C Copper Wire
*Wire Connector Rated 90°C
Openings rated for #4-14 AWG are multiple wire rated: (2) #10 CU Str, (2 to 4) #12 CU Str, and (2 to 4) #14 CU Str.
Openings rated for #2-14 AWG are multiple wire rated: (2) #8 CU Str, (2) #10 CU Str, (2) #12 CU Str, And (2) #14 CU Str
CE (Up to 1000 Volts AC/DC)

² Special one-pole block. Apply power block dimensions for 145 Series 3-Pole block.