The Marathon/Kulka 411 GP series terminal blocks are robust, single-row solutions suitable for a variety of industrial applications requiring reliable power distribution. These blocks are rated for 300 Volts AC/DC and feature an open-back design, requiring an insulator strip for optimal voltage insulation. They accommodate wire sizes ranging from #18 to #20 AWG using a wire binding screw. A wide range of hardware options, including quick connects and solder terminals, are available to suit diverse connection needs. UL and CSA recognized, these terminal blocks offer a combination of performance and safety.