Marathon/Kulka 604-GP series terminal blocks are robust, double-row phenolic insulated blocks suitable for a wide range of industrial applications. The open-back design allows for flexibility in insulation, and the use of #12-32 binder head screws ensures secure connections. These blocks are available in configurations from 1 to 8 poles, spaced at 7/8” centers, and accommodate wire sizes from #4 to #12 AWG, supporting currents up to 70 Amps. UL and CSA certifications ensure compliance with industry standards. Hardware options like studs and jumpers are available to customize performance.